Aosa	gilgiana (Urb.) Weigend, in Weigend: Nasa & the conquest of South America: 218. 1997. º Loasa gilgiana Urb., Bot. Jahrb. Syst. 42: 231. 1909. - Holotype: Brazil. Bahia: Rocks near Maracás, 1000 m, Ule 6973 (B+, photo F!, neg. nr. 10193; HBG!, iso). - Distribution: Brazil. Bahia (Ref.: Weigend 1997a: 212-213).
Aosa	parviflora (Schrad. ex DC.) Weigend, in Weigend: Nasa & the conquest of South America: 218. 1997. º Loasa parviflora Schrad. ex DC., Prodr. Syst. Nat. 3: 342. 1828. ñ Lectotype (designated in Weigend 1997a: 212): "Brasilia" (G-DC!) - probably collected by Sello and belonging to one collection with "Rio de Janeiro, on rock by the ......(?) of the Aequeduct, 16th of February 1815", Sello s.n. (BM!). = Loasa brasiliensis Colla, Herb. Pedem. 2: 451. 1834. - Holotype: Brazil. Rio de Janeiro, Martius s.n. anno 1927 (Turin!; E!, iso). - Distribution: Brazil. Bahia, Rio de Janeiro, Minas Gerais (Ref.: Weigend 1997a: 212).
Aosa	plumierii (Urb.) Weigend, in Weigend: Nasa & the conquest of South America: 218. 1997. º Loasa plumierii Urb., Ber. D. Bot. Ges. 28: 515. 1910. ñ Lectotype (designated in Weigend 1997a: 213): Sto Domingo. Cantana, forests rich in undergrowth near Tireo & Jajo, 1200 m, v. Türckheim (BR!, B+). - Distribution: Dominican Republic: Azua, La Vega, San Juan, Barahona, Peravia. Haiti: Massif de La Salle, Massif de Malheux (Ref.: Weigend 1997a: 213).
Aosa	rostrata (Urb.) Weigend, in Weigend: Nasa & the conquest of South America: 218. 1997. º Loasa rostrata Urb., in Martius, Fl. Bras. 13/3: 208. 1889. - Lectotype (designated in Weigend 1997a: 213): Brazil. Goyaz: "In clefts of limestone rocks at Lapí near Arrayas", Gardner 3746 (BM!, CBGE!, G!, photo F!, neg. nr. 24174, OXF! W!). - Distribution: Brazil: Minas Gerais, Goyaz (Ref.: Weigend 1997a: 213).
Aosa	rupestris (Hook.) Weigend, in Weigend: Nasa & the conquest of South America: 218. 1997. º Loasa rupestris Hook, Icones Plantarum 7: tab. 663. 1844. ñ Lectotype (designated in Weigend 1997a: 212): Brazil. Bahia: Between Cachoeiras & Maramleiro, Gardner 2413 (BM!; CBGE!, OXF!, W! iso). - Distribution: Brazil: Ceará, Bahia, Paraiba, Pernambuco (Ref.: Weigend 1997a: 212-213).
Aosa	sigmoidea Weigend, Nord. J. Bot. 19(2): 1999. ñ Type: Brazil: Minas Gerais, 15 km on road W of Januária on road to Serra das Araras, 575-650 m, coll. 20.4.1973, W.R. Andersson 9240 (M, iso NY). ñ Distribution: Brazil: Minas Gerais.
Aosa	uleana (Urb. & Gilg) Weigend, in Weigend: Nasa & the conquest of South America: 218. 1997. º Loasa uleana Urb. & Gilg, Nova Acta Acad. Caes. Leop.-Carol. German. Nat. Cur. 76/1: 255. 1900. ñ Lectotype (designated in Weigend 1997a: 213): Brazil. Rio de Janeiro. Serra do Itatiaia, 1500 m, Ule 3713 (HBG; iso: B+, photo F!, neg. nr. 10222). - Distribution: Brazil: Rio de Janeiro. Serra do Itatiaia (Ref.: Weigend 1997a: 213).

Blumenbachia	ñ sections Blumenbachia and Gripidea have been revised, whereas the section Angulatae remains problematical. Many species were described from Argentina and Chile but it seems that ultimately most of them will have to be reduced under Blumenbachia dissecta and B. silvestris. The synonymy here given has to be considered as tentative.
Blumenbachia	catharinensis Urban & Gilg, Monographia Loasacearum: 355. 1900. ñ Lectotype (designated in Weigend 1997a: 211): Brazil. Sta Catarina: Along creeks near the camp in the Serra do Oratorio, Ule 1486 (HBG!; B+, photo G!, iso). - Distribution: Brazil: Sta Catarina, Rio Grande do Sul. (Ref.: Weigend 1997a: 210).
Blumenbachia	dissecta (Hook. & Arn.) Weigend, comb. nov. ined. º Loasa dissecta Hook. et Arn., Hook. Bot. Misc. 3: 330. 1833. - Type: Chile, near Valparaiso, Cuming 667 (B+ photograph Field neg. nr. 10148). = Blumenbachia espigneira Gay, Fl. Chil. 2: 434. 1846.  =Caiophora espigneira (Gay) Urb. & Gilg, Monogr. 336. 1900. - Type: Chile: Cordillera de Talcaregua, 2400m m, anno 1839, Gay s.n. (P!, photograph Field Museum 38492). = Caiophora patagonica (Speg.) Urb. & Gilg, Monogr. 341. 1900. - Basionym: Loasa patagonica Spegazzini, Rev. Fac. Agr. La Plata 3. 1897: 521. (non Urb. & Gilg!) 1900. - Types: Argentina. Sta Cruz: Río Santa Cruz, February 1882, C. Spegazzini s.n. (not localized); near Golfo San Jorge, anno 1896; C. Ameghino, Hb. Spegazzini 14330 (LP); near Sta Cruz, Spegazzini 14-521, 14-522 (B+). = L. spegazzinii Macloskie, Fl. Patagon. Rep. Princ. Univ. Exp. Patag. 8/5: 588. 1905. = Caiophora kurtzii Urb. & Gilg, Monogr. Loasac.: 335. 1900. - Type: Argentina. Mendoza. Malargue, above Rio Grande, Valle Hermoso, Kurtz 5800 (B+, Field neg. r. 10154, isotypes K, CORD). ñ Distribution: Chile: Limache. Maule. Santiago. Argentina: Mendoza. Chubut. Sta Cruz. ñ (Ref.: Correa 1988, Grau 1988, Sleumer 1955, Cabrera 1965).
Blumenbachia	eichleri Urb., in Martius, Fl. Bras. 13/3: 218, tab. 55. 1889. º Cajophora eichleri (Urb.) Urb. & Gilg, Nova Acta Acad. Caes. Leop.-Carol. German. Nat. Cur. 76/1: 243. 1900. = Cajophora scabra (Miers) Urb. var schenkiana Urb. & Gilg., Nova Acta Acad. Caes. Leop.-Carol. German. Nat. Cur. 76/1: 243. 1900. - Basionym: Blumenbachia scabra (Miers) Urb. var schenkiana Urb. - In Martius, Fl. Bras. 13/3: 219. 1889. - Holotype: Brazil. Sta Catarina. Serra do Mar, Joinvile, Schenk 1255 (B+). - Neotype (designated in Weigend 1997a: 211): Brazil. Sta Catarina. Esta. Dona Francisca, Joinvile, 550 m, Reitz & Klein 5600 (US! ; iso: NY!). = Blumenbachia aspera (Vell.) Urb. in Martius, Fl. Bras. 13/3: 221. 1889. = Gripidea asperata Miers, Trans. Linn. Soc. Bot. 25: 235. 1866. - Basionym: Mentzelia aspera Vell. Flora Fluminensis 5: 224, tab. 96. 1825. - Lectotype (designated in Weigend 1997a: 211): Tab. 96, l.c. nom. ill. (non Mentzelia aspera L., Sp. pl. 1: 516. 1753). - Distribution: Brazil: Sta Catarina, Rio Grande do Sul (Ref.: Weigend 1997a: 211).
Blumenbachia	exalata Weigend, Weigend 1997c: 218. - Holotype: Galópolis, Caxias do Sul, Sehnem 3996 (M!; isos: F!, B!). - Distribution: Brazil. Rio Grande do Sul (Ref.: Weigend 1997c: 218).
Blumenbachia	hieronymi Urban in Eichl. Bot. Jahrb. 3: 249. 1884. ñ Lectotype (designated in Weigend 1997a: 209): "Cult in Berlin, semina misit Hieronymus" legit Urban anno 1884 (Z!). ñ Distribution: Argentina: Cordoba (Ref.: Weigend 1997a: 209).
Blumenbachia	insignis Schrad. in Goett. Gel. Anz. 3/171: 1706. 1825. ñ Lectotype (designated in Weigend 1997a: 209): "Ex Horto Gottingensis, Schrader" (G-DC). = Loasa palmata Sprengel, Syst. 2: 601. 1831. ñ Lectotype (designated in Weigend 1997a: 209): Uruguay: "Monte Video, Sello anno 1825" (K!). = Blumenbachia palmata Cambess in St. Hilaire, Fl. Bras. Merid. 2: 208. 1829. - Lectotype: Brazil: ST. Hilaire Cat. Nr. 2042 bis (P!, iso P!). = Blumenbachia multifida Hook., Bot. Mag. 64: tab. 3599. - Lectotype: Tab. 3599, l.c. - Typotype: Pampas of Buenos Aires, Tweedie s.n. (K!). - Blumenbachia parviflora Gillies ex Hook. et. Arnold, in Hook & Arnold, Bot. Msic. 3: 327. 183. nom. nudum. - Distribution: Brazil: Rio Grande do Sul. Uruguay: Lavalleja, Soriano. Argentina: Buenos Aires, Entre Ríos, La Pampa (Ref.: Weigend 1997a: 209).
Blumenbachia	latifolia Cambess., St. Hilarie, Fl. Bras. Merid. 2: 209, tab 118. 1829. - Lectotype (designated in Weigend 1997a: 209): Tab. 118, l.c. - Epitype: Brazil. Sao Paulo, St. Hilaire 1064 (P!). - Blumenbachia urens (Vell.) Urban, Martius, Fl. Bras. 13/3: 213, tab. 57. 1889. - Basionym: Loasa urens Vell., Flora Fluminensis 5: 212, tab. 98a. 1831. ñ Lectotype (designated in Weigend 1997a: 209): Tab. 98a, l.c. - nom. ill. (non Loasa urens Jacq., Obs. Bot. 2: 15. 1784). - Distribution: Argentina: Buenos Aires Tucuman, Entre Ríos, Misiones, Corrientes, Chaco. Paraguay: Guaira. Brazil: Minas Gerais, Sta Catarina, Sao Paulo, Rio Grande do Sul, Paraná (Ref.: Weigend 1997a: 209).
Blumenbachia	prietea Gay, Fl. Chil. 2: 435. 1846. º Caiophora prietea (Gay) Urb. & Gilg, Engler & Prantl, Nat. Pflanzenfam. III 6a: 120. 1894. - Type: Chile: Cordillera de Talcaregua, February 1831, Gay s.n. (P, photo Field neg. nr. 38496). ñ Distribution: Chile: Maule.
Blumenbachia	scabra (Miers) Urb., in Martius, Fl. Bras. 13/3: 219, tab. 16. 1889. º Gripidea scabra Miers, Trans. Linn. Soc. Bot. 25: 235, tab. 28. 1866. - Holotype: Brazil. Sao Paulo: Corvo, between Curitiba and Paranagua, Weir 465 (K!; isos: F!, US!). Distribution: Brazil. Paraná, Sta Catarina (Ref.: Weigend 1997a: 211).
Blumenbachia	silvestris Poepp., Fragm. Synops.: 25. 1833. º Caiophora silvestris (Poepp.) Urb. & Gilg, Monogr. Loasac.: 338. 1900. - Type: Chile. Antuco, January 1829, Poeppig 853 (W, photograph F neg. nr. 32586). = B. silvestris var. australis Urb. & Gilg, Urb. & Gilg, Monogr. Loasac.: 340. 1900. - Type: Chile. Araucania, anno 1888, Philippi s.n. (B+). = Blumenbachia silvestris var. leptocarpa Spegazz., Facult. Agr. Vet. La Plata 3: 80. 1897. = Caiophora silvestris var. leptocarpa (Spegazz.) Urb. & Gilg, Monogr. Loasac.: 340. 1900. - Types: Argentina: Rio Malahué, Kutz 5723 (not localized). Patagonia Moreno & Tonini 414 (NY!), 415 (NY!). Carrenleofú, Moyano, Spegazzini (LPS 18727 - fide Sleumer). = Blumenbachia mitis Phil., Anal. Univ. Chile 85: 17. 1894. = Caiophora silvestris var. mitis (Phil.) Urb. & Gilg, Monogr. Loasac.: 340. 1900. - Type: Chile. Cordillera de Chillán, Philippi 694 - Type: Not localized. Baños de Chillán, anno 1877, Philippi 1741 - Type: Not localized. = Loasa scandens Meyen, Reise 1: 310. 1834. = Caiophora scandens Meyen et Klotzsch ex Walp., Nov. Act. 19. Suppl. 1: 339. 1843. - Type: Not localized. = Blumenbachia domeykoana Phil., Linnaea 33: 785. 1864. - Type: Not localized. = Loasa ochagaviae Phil., Linnaea 28: 641. 1856. - Type: Chile. Cordillera de Maule, anno 1855, Germain (BM!, HUH!). = Loasa volckmannii Phil., Anal. Univ. Chil.: 715. 1872. - Type: Not localized. ñ Distribution: Chile: Ñuble, Cautin. Argentina: Mendoza, Neuquén, Chubut, Rio Negro. - (Ref.: Correa 1988, Grau 1988, Sleumer 1955, Cabrera 1965).

Chichicaste

grandis (Standley) Weigend, Nasa and the conquest of South America, 215. 1997. º Loasa grandis Standley, J. Wash. Ac. Sci. 17(1!: 12. 1927. Type: Costa Rica. Guanacaste: Cordillera de Tilarán, above the road to El Silencio, collected in humid forests near Tilarán, 625 m, 1926, Standley & Valerio 44558 (US holotype).

Eucnide	aurea (A. Gray) Thompson & Ernst, J.Arnold Arbor. 48: 85-86. 1967. - Type: Pulpito Point, Dr. Thomas H. Streets (GH). º Sympetaleia aurea A. Gray, Proc. Amer. Acad. 12: 161. 1877.
Eucnide	bartonioides Zucc., Del. Sem. Hort. Monac. 1844/4: 28. 1844. - Type (designated in Weigend, Nasa and the conquest of South America: 219. 1997):  Mexico, "legit in imperio Mexicano, Karwinsky s.n. (M!). º Microsperma bartonioides Walp. Repert. Bot. 5: 777. 1845-46. = Mentzelia gronoviaefolia Fisch. & Mey. in Fisch., Mey. & Ave-Lallemant, Index Sem. Hort. Petrop. 10: 54. 1845.
Eucnide	cordata (Kell.) Kell. ex. Curran, Bull. Calif. Acad. 1: 137. 1885. º Mentzelia cordata Kell., Proc. Calif. Acad. 2: 33. 1860. - Type: USA, California, Cedros Island, Dr. J. A. Veatch (Iso GH).
Eucnide	durangensis Thompson and Powell, Phytologia 49/1. 1981. - Type:  Mexico, Durango, ca. 14 air miles WSW of Torreón, 2 miles W of Highway 45, in lower canyon on open vertical limestone cliff, on road to Microondas est. sapioris. Near Lat. 25°18' N, Long. 103°43' W, 1160m, 14. August 1973, James Henrickson 12405 (TEX, isotype LA).
Eucnide	floribunda S. Wats., Proc. Amer. Acad. 17: 358. 1882. - Type: Mexico, northwest of Parras, near Acatita, E. Palmer 832 (GH).
Eucnide	grandiflora (Groenl.) Rose, Contr. U. S. Natl. Herb. 3: 317. 1895. - Type: Fig. 84, p.350, in Groenland, Rev. Horticole 1861: 349-351. º Microsperma grandiflora Groenl., Rev. Hort. 1861: 349. fig. 84. 1861. º Eucnide grandiflora var. guatemalensis (Standl. & Steyerm.) Waterfall, Rhodora 61: 242. 1959. - Type: C.G. Pringle 10077, US 462126. = Eucnide guatemalensis Standl. & Steyerm., Field Mus. Publ. Bot. 23: 178. 1944. - Type: Steyermark 50818, Guatemala.
Eucnide	hirta (G. Don) Thompson & Ernst, J. Arnold Arbor. 48: 83-84. 1967. º Mentzelia hirta G. Don, Gen. Syst. Gard. Bot. 3: 66. 1834. - Type: Mexico, Sessé & Mociño (BM).  = Eucnide sinuata S. Wats. Proc. Amer. Acad. 17: 358. 1882. - Type: Botteri 266 (GH). = Eucnide nelsonii Rose, Contr. U.S. Natl. Herb. 12: 286. 1909. - Type: Michoacán, E.W. Nelson 6926, (US 399295). = Eucnide pringlei var. pringlei Rose, Contr. U.S. Natl. Herb. 12: 287. 1909. - Type:  Guerrero, C. G. Pringle 10077, (US 462195).
Eucnide	hypomalaca Standl., Field Mus. Publ. Bot. 22: 41. 1940. º Eucnide pringlei var. hypomalaca (Standl.) Waterfall,  Rhodora 61: 239. 1959. - Type: Mexico, Sonora, H. S. Gentry 1315 (F).
Eucnide	lobata (Hook.) A. Gray, Boston Jour. Nat. Hist. 6: 192. 1857. º Mentzelia lobata (Hook.) Walp. Repert. Bot. 2: 224. 1843. º Microsperma lobatum Hook. Icon. Pl. 3: pl. 234. 1839, "Microsperma lobata". - Type: Mexico, Santa Catarina, near Monterrey, Nuevo León, Berlandier s.n. (K). = Eucnide watsonii Urb. & Gilg, Nova Acta Acad. Leop.-Carol. 7: 105. 1900. - Type: Mexico, between San Luis Potosi and Tampico, E. Palmer 1067 (K).
Eucnide	rupestris (Baill.) Thompson & Ernst, Journal of the Arnold Arboretum 48: 86-87. 1967. º Sympetaleia rupestris (Baill.) S. Wats., Proc. Amer. Acad. 24: 50. 1889. º Loasella rupestris Baill., Bull. Soc. Linn. Paris 1: 650. 1887. - Type: Thièbault 1099 (P).
Eucnide	tenella (I. M. Johnst.) Thompson & Ernst, Journal of the Arnold Arboretum 48: 87. 1967. º Sympetaleia tenella I. M. Johnst., Proc. Calif. Acad. IV. 12: 1106. 1924. - Type: Agua Verde Bay, I. M. Johnston 3091 (CAS 1239).
Eucnide	xylinea C. H. Muller, Amer. Midl. Nat. 27: 487. 1942. - Type: Mexico, Coahuila, C. H. Muller s.n. (US 2109944).
Eucnide	urens Parry, Amer. Nat. 9: 144. 1875. º Eucnide parryi House, Bull. N.Y. Stat Mus. 324: 67. 1922. º Mentzelia urens Parry ex Gray, Proc. Amer. Acad. 10: 71. 1874, nom. illeg. - Type: USA, Utha, C. C. Parry 79 (GH).  = Eucnide synandra A. Nelson, Bot. Gaz. 47: 428. 1909.

Gronovia	scandens  L., Sp. pl. 1: 202 (1753). - Type (designated by Barries in Jarvis et al., Regnum Veg. 127: 51 1993): [Mexico, Veracruz] Martyn, Hist. Pl. Rar.: t. 40. 1728. = Gronovia humboldtiana Schult., Roem. et Schult., Syst. Veg. 5: 492. 1819. = Gronovia jacquiniana Roem., Fam. nat. syn. monogr. 2: 108. 1846. - Lectotype: Jacq., Collectanea 3: 197, Ic. pl. rar.: t. 338 (1789).
ronovia	longiflora Rose, Contr. US Nat. Herb. V: 197. 1899. - Type: Mexico: Morelos. Lava fields near Cuernavaca, 1700 m, 29.9.1899, Pringle 8258 (US, isotypes: M, MO, PR). = Gronovia grandiflora Urb. & Gilg, Nova Acta Acad. Caes. Leop.-Carol. German. Nat. Cur. 76/1: 13-14. 1900. ñ Types: Mexico: Pavon, September, Uhde 1080, Schiede 1010 (B+, G-DC).

Huidobria	chilensis Gay, Fl. chil. 2: 440. 1847. - Type: In arenosis subandinis, Coquimbo, Gay (P, Iso: K). º Loasa chilensis (Gay) Urb. & Gilg in Urban, Ber. Deutsch. Bot. Ges. 10: 222. 1892.
Huidobria	fruticosa Phil. in Anal. Univ. Chile 13: 219. 1855. º Loasa fruticosa (Phil.) Urb. & Gilg, Ber. Deutsch. Bot. Ges. 10: 263. 1892. - Type: Chili, Atacama, "Se encuentra en el desierto de Atacama en el valle Guanillo, cerca de Paposo, allí mismo y en el límite de la vegetación y en el valle Hacia el oriente de la aguada de Tiloposo", Philippi (SGO 525601, 41555).

Klaprothia	fasciculata (K.Presl) Poston, Syst. Bot. 15(4): 671- 678. 1990. - Sclerothrix fasciculata K.Presl, Symb. Bot. 2(6): 3, t. 53. 1834. - Lectotype (designated by Poston & Nowicke 1990): T. 53, l.c.; based probably on: [Mexico] Sumichrast 1901 (PR or PRC, fide Urban & Gilg 1900).
Klaprothia	mentzelioides Kunth in Humb., Bonpl. & Kunth, Nov. gen. sp. 6: 96. 1823. - Type: Colombia, Quindío, Los Volcancitos, Humboldt & Bonpland s.n. (P-Bonpl).

Loasa

nitida Desr., Lam. Encycl. 3: 581. 1789. - Holotype: Depto Lima. Prov. Lima:  without precise locality, Dombey s.n. (P!, fragm. & photo F, neg. nr.38481; G, BM, P, iso).

Mentzelia	aspera L., Sp. pl. 1: 516 .1753. - Type: Plum (ed. J.Burm.), Pl. am.: 167, tab. 174. 1758. = Mentzelia stipitata Presl, Rel. Haenk. 2. 40. 1831. = Mentzelia pedicellata Presl, Epim. bot.: 246. 1849. = Acrolasia squalida Hook.F., Transact. Linn. Soc. 20: 222. 1851. = Mentzelia propinqua F.Aresch., Pl. itin. Eugeniae: 133. 1880. - Types: Ecuador, [Prov. Guayas] Isla de Puná, N.J. Andersson 124 (S!). N.J. Andersson 125 (S!). - Lectotype: N.J. Andersson 124 (S!) = Mentzelia albicaulis Torrey, Mexican boundary survey: 67.1851. pro parte excl. typo = Mentzelia fragilis Huber, Bulletin de´l Herbier Boissier (2nd Series) 1(3): 314. 1901. - Type: Brazil. Ceará. Quixada reservoir, between rocks, Huber s.n. (G, SP). = Mentzelia corumbaensis Hoehne, Comm.lin.telegr., Bot. VI(5): 54. 1915. - Type: Tab. 126, l.c.; based on: Brazil. Corumbá, Flowering February, Hoehne 4226, Hoehne 4227 (not located). = Mentzelia triloba Ruiz & Pav., Flora Peruviae, et Chilensis 5: 423. 1958. - Type: Ic.. 444, fig. a, l.c. [based on a specimen sent by Tafalla from Guayquil, Ecuador].
Mentzelia	fendleriana Urb. & Gilg, Mem. Torrey Bot. Club 3: 34. 1893.- Types: [Venezuela, Miranda] Ñprope coloniam Tovarì, Fendler 1876 (G!, Goet!, MO, B+), [Bolivia] Bolivian Plateau, Bang 748 (NY!, E!, excl. M! = Mentzelia aspera L.), dito, Bang 1082 (NY!). - Lectotype: Fendler 1876 (G! lectotype, designated in Weigend 1996b: 237; GOET!, MO, isotypes).
Mentzelia	scabra Kunth, in Humb., Bonpl. & Kunth, Nov. gen. Sp. 6: 118. 1823. - Type (designated in Flora de Colombia 22: 25. 2001): Colombia. Nariño: between Pasto and Túquerres, Humboldt & Bonpland 2573 (P-BONPL! lectotype; P! isotype)

Nasa	aequatoriana (Urb. & Gilg) Weigend, in P.M. Joergensen & S. León-Y. : 954. 1999. - Type: (designated in Weigend ,1996a: 228:) [ECUADOR. Pichincha:] Crescit in andium nemoribus, alt. 8000 pedes, Jameson 427 (Lectotype: P!; Isotypes: BM!, E!). º Loasa aequatoriana (Urb. & Gilg) Weigend, Sendtnera 3: 228. 1996. º Loasa triphylla Juss. var. aequatoriana Urb. & Gilg, Nova Acta Acad. Caes. Leop.-Carol. German. Nat. Cur. 76: 240. 1900. - Type (designated in Weigend 1996a: 228): ÑCrescit in andium nemoribus, alt. 8000 pedesì, Jameson 427 (P! lectotype; BM!, E!, isolectotypes).
Nasa	amaluzensis Weigend in P.M. Joergensen & S. León-Y.: 954. 1999. º Loasa amaluzensis Weigend, Bot. Jahrb. Syst. 118(2): 264. 1996. - Type: Ecuador, Loja, 26.4 km S of Amaluza on road to Zumba, river valley, 2800 m, Clemants 2392 (QCA! holotype; QCNE! isotype).
Nasa	anderssonii Weigend, Nord. J. Bot. 20 (1): 17-18. 2000. - Type: Ecuador, Zamora-Chinchipe, 4 km W of Punguitza alto, 1100-1200 m, Harling & Andersson 24146 (GB! holotype; QCA! isotype).
Nasa	argemonoides (A. L. de Jussieu) Weigend in Flora de Colombia 22: 33-36. 2001. º Loasa argemonoides A. L. de Jussieu, Ann. Mus. Hist. Nat. 5: 26. 1804. - Type (designated in Flora de Colombia 22: 33. 2001)): Colombia. Cundinamarca: Bogotá. Serranía de Bogotá, road to Choachí, Humboldt & Bonpland 375 (P-BONPL lectotype; P! isolectotype; F fragment, fotograph, neg. nr. 38475).
Nasa	aspiazui (Macbr.) Weigend, Arnaldoa 5(2): 162. 1998. º Loasa aspiazui Macbr. in Field Mus. Nat. Hist. 13: 150. - Holotype: Depto Junin. Río Masamerich, Weberbauer 6669 (US!; F!, MOL!, iso).
Nasa	auca (Weigend) Weigend in P.M. Joergensen & S. León-Y. : 954. 1999. º Loasa auca Weigend, Bot. Jahrb. Syst. 118/2: 266. 1996. - Type: Ecuador, Tunguragua, Baños, trail east from Vizcaya, 2800 m, Weigend & Horn 3803 (M! holotype; K!, M!, QCA!, QCNE!, isotypes).
Nasa	bicornuta (Weigend) Weigend in P.M. Joergensen & S. León-Y.: 954. 1999. º Loasa bicornuta Weigend, Sendtnera 3: 229. 1996. - Type: Peru, Dpto Piura, Prov. Huancabamba, Palimbala (Canchaque - Huancabamba), Sagástegui, Cabanillas & Dios 8137 (AAU!, holotype; G!, MO!, isotypes).
Nasa	campaniflora (Triana & Planchon ex Urb. & Gilg) Weigend in Flora de Colombia 22: 36-39. 2001. º Loasa campaniflora Triana & Planchon ex Urb. & Gilg, Nova Acta Acad. Caes. Leop.-Carol. German. Nat. Cur. 76: 218. 1900. - Type (designated in Flora de Colombia 22: 38. 2001): Colombia. Cundinamarca: Fusagasugá, Andes de Bogotá, 1800-2300 m, Triana 2476 (BM! lectotype)
Nasa	carnea (Urb. & Gilg ) Weigend, Arnaldoa 5(2): 162. 1998. º Loasa carnea Urb. & Gilg, Bot. Jahrb. 45: 469. 1911. - Holotype: Depto Cajamarca. Prov. Bambamarca: Chugur, 2700 m, Weberbauer 4082 (B+, photo F!, neg. nr. 10182; G !, iso).
Nasa	carunculata (Urb. & Gilg ) Weigend, Arnaldoa 5(2): 162. 1998. º Loasa carunculata Urb. & Gilg, Monogr. Loasacearum: 243. 1900. - Holotype: [Province unknown] Lobb 358 (K! photo F!, neg. nr. 495). = Loasa vestita Killip, Journ. Wash. Acad. Science 19: 194. 1929. - Type: Depto Ayacucho. Prov. Huanta: N of Huanta, near Huallay, 3500-3600 m, Weberbauer 7591 (K!, F!, photo neg. nr. 50220, NY, BM, S, MO).
Nasa	chenopodiifolia (Desr.) Weigend, Arnaldoa 5(2): 163. 1998. º Loasa chenopodiifolia Desr., Lam. Encycl. 3: 580. 1791. - Holotype: [Lima?] Ñherbier de Perouì, Jos. de Jussieu s.n. (P-JUSS!, Photo F, neg.nr. 38505). = Loasa xanthiifolia Juss., Ann. Mus. Hist.Nat.5: 26. 1804. - Holotype: Lima, Dombey s.n. (P-Juss!, fragment & photo F, neg.nr. 38504; P!, iso). = Loasa aspera Ruiz & Pavón, Flora peruviae, et chilensis 5: 407, tab. 441 b. - Lectotype: tab. 441 b, l.c.; Epitype: ÑLoasa de Huayaquilì, Pavón 186 (G!, B+; photo F neg. nr.?). = Loasa fulva Urb. & Gilg, Monogr. Loasacearum: 224. 1900. - Holotype: cult. at Berlin Bot. Gardens anno 1846 (B+, photo F, neg. nr. 10191). - Neotype: Depto. Lima: Santa Clara next to Lima-Oroya railway, 400-600 m, Weberbauer 1672 (F!, G!). = Loasa inconspicua Urb. & Gilg, Monogr. Loasacearum: 221. 1900 - Holotype: ÑLima, northern Peruì, Cuming 1051 (BM!; E!, iso).
Nasa	colanii Dostert & Weigend, Harvard Papers in Botany 4/2: 461. 1999. - Type: PERU. Amazonas: Prov. Bagua, Cordillera Colán SE of La Peca, 3000 m, 25.9.1978, Barbour 3573 (Holotype: MO!; Isotype: USM!).
Nasa	cuatrecasasii Weigend, Nasa & the conquest of South America: 218. 1997. - Type: Colombia. Magdalena: Sierra Nevada de Santa Marta, southeastern side, río Donachuy, Sacaracangua to Canguruaca, 1975 m, Van der Hammen 1100 (COL!).
Nasa	cymbopetala (Urb. & Gilg) Weigend, Arnaldoa 5(2): 163-164. 1998. º Loasa cymbopetala Urb. & Gilg, Ber. D. Bot. Ges. 45: 467. 1911. - Type: Depto Ancash
Nasa	dillonii Weigend, Nord. J. Bot. 20 (1) 2000: 18-20. - Type: Peru, Cajamarca, Prov. Santa Cruz, Distrito Catache, Upper Río Zaña Valley, 5 km above Monte Seco on path to Chorro Blanco, near the waterfall, 1500-2000 m, Dillon, Sagástegui, Dillon, Alcorn, Santistebán, Leiva, Téllez & Guzmán 4416 (F! holotype; M!, NY! photographs; HUT!, MO!, US! isotypes).
Nasa	dolichostemon (Urb. & Gilg) Weigend in Flora de Colombia 22: 42-46. 2001. º Loasa dolichostemon Urb. & Gilg, Nova Acta Acad. Caes. Leop.-Carol. German. Nat. Cur. 76: 215. 1900. - Type (designated in Flora de Colombia 22: 42. 2001): Colombia. Cauca: Popayán, lado oriental del páramo Guanacas, 2600-3000 m, Lehmann 5761 (K! lectotype, MO!, US! isolectotypes).
Nasa	driesslei Weigend, Nord. J. Bot. 20 (1) 2000: 20-22. - Type: Peru, Dept. Amazonas, Prov. Chachapoyás, road from Balsas to Leimebamba, 50 km from Balsas, 3100 m, Weigend, Dostert & Drießle 97/400 (M! holotype; F!, M!, USM! isotypes).
Nasa	dyeri (Urb. & Gilg) Dostert & Weigend in P.M. Joergensen & S. León-Y.: 954. 1999. - Type: (designated in Weigend 1996a: 326.): ECUADOR. [Bolívar:] San Antonio, in monti Chimborazo, Spruce 6183 (Lectotype: BM!; Isotypes: CBGE!, W! - Photo F!). º Loasa triphylla Juss. subsp. dyeri (Urb. & Gilg) Weigend, Bot. Jahrb. Syst. 118(2): 288. 1996. º Loasa dyeri Urb. & Gilg, Nova Acta Acad. Caes. Leop.-Carol. Germ. Nat. Cur. 76: 242. 1900. - Type (designated in Weigend 1996a: 326.): Ecuador. [Bolívar] ÑSan Antonio, in monti Chimborazoì, Spruce 6183 (BM! lectotype; CGE!, W! - Photo F! isotypes).
Nasa	dyeri (Urb. & Gilg) Dostert & Weigend subsp. dyeri. For type see species.
Nasa	dyeri (Urb. & Gilg) subsp. australis Dostert & Weigend, Harvard Papers in Botany 4/2: 467. 1999. - Type: [Cultivated at Munich from seeds collected in:] PERU. Amazonas: Prov. Bagua, trail from La Peca to El Arenal, 1200 m, Dostert 98/80C (Holotype: M!; Isotypes: CPUN!, F!, HAO!, K!, M!, MO!, NY!, USM!, W!).
Nasa	ferruginea (Urb. & Gilg) Weigend, Arnaldoa 5(2): 164. 1998. º Loasa ferruginea Urb. & Gilg, Monogr. Loasacearum: 225. 1900. - Lectotype (designated in Weigend 1998: 164): Depto Puno. Prov. Agapata: Agapata, Lechler 1877 (GOET!; K, B+, photo F!, neg. nr. 10187, iso).
Nasa	glabra (Weigend) Weigend in P.M. Joergensen & S. León-Y.: 955. 1999. º Loasa glabra Weigend, Bot. Jahrb. Syst. 118(2): 268. 1996. - Type: Ecuador, Zamora-Chinchipe, Parque Nacional Podocarpus, road Yangana - Valladolid, km 26, 2550 m, Madsen et al. 75762 (QCA! holotype; AAU!, LOJA! isotypes).
Nasa	grandiflora (Desr.) Weigend in P.M. Joergensen & S. León-Y.: 955.1999. º Loasa grandiflora Desr., in Lam., Encyc. bot. 3: 580. 1879. - Type: "Joseph de Jussieu, Perou" (P-JUSS! holotype, Photo M, QCA). = Loasa acuminata Wedd., Chlor. andina 1: 220. 1855. - Type: [Ecuador, Pichincha] Western slopes of Pichincha, Jameson 135 (P!, holotype; BM!, E!, G!, B+, isotype). = Loasa aurantiaca Urb. & Gilg, Nova Acta Acad. Caes. Leop.-Carol. Germ. Nat. Cur. 76: 209. 1900. - Type (designated in Weigend 1996a: 240): [Ecuador, Carchi] Cordillera de Tulcán, 2800-3000 m, Lehmann 533, (G! lectotype; BM!, US! isolectotypes). non Loasa grandiflora Ruiz & Pav., Fl. peruv. prodr. 5: 404, tab. 440. 1958. ( = Nasa magnifica (Urb. & Gilg) Weigend). non Loasa grandiflora Desr. sensu Urb. & Gilg, Nova Acta Acad. Caes. Leop.-Carol. Germ. Nat. Cur. 76: 224. 1900. ( = Nasa cymbopetala (Urb. & Gilg) Weigend).
Nasa	hastata (Killip) Weigend, Arnaldoa 5(2): 164. 1998. º Loasa hastata Killip, Field Mus. Nat. Hist. 18: 154 - Holotype: Depto Lima. Prov. Lima: Matucana, 2500 m, Macbride & Featherstone 416 (US; F, iso).
Nasa	hornii (Weigend) Weigend in P.M. Joergensen & S. León-Y. : 955. 1999. º Loasa hornii Weigend, Bot. Jahrb. Syst. 118/2: 254. 1996. - Type: Ecuador, Bolívar, just NE of Chillanes, 2500 m, Weigend & Horn 3815 (M! holotype; QCA!, QCNE! isotypes).
Nasa	humboldtiana (Urb. & Gilg) Weigend in P.M. Joergensen & S. León-Y.: 955. 1999. º Loasa humboldtiana Urb. & Gilg, Nova Acta Acad. Caes. Leop.-Carol. Germ. Nat. Cur. 76: 240. 1900. - Type (Lectotype designated in Weigend 1996: 232): [Ecuador, Chimborazo, Forest of] Llalla, Spruce 6002 (P !; lectotype; B+: photo F!, BM!, E!, F!, G!, GOET!, OXF!, S!, W!, isolectotypes).
Nasa	humboldtiana (Urb. & Gilg) Weigend subsp. humboldtiana. For type see species.
Nasa	humboldtiana (Urb. & Gilg.) Weigend subsp. obliqua Dostert & Weigend, Harvard Papers in Botany 4/2: 464. 1999. - Type: PERU. Cajamarca: Prov. Hualgayoc [Prov. Santa Cruz], Monte Seco, 1800 m, Soukup 3826 (Holotype: US!).
Nasa	humboldtiana (Urb. & Gilg) Weigend subsp. roseoalba (Weigend) Dostert, In Joergensen & León, 955. 1999. - Type: ECUADOR. Bolívar: NE of Chillanes, September--October 1995, Weigend & Horn 3812 (Holotype: MSB!; Isotypes G!, QCA!, QCNE!).
Nasa	humboldtiana (Urb. & Gilg) Weigend subsp. tricolor Dostert & Weigend, Harvard Papers in Botany 4/2: 464. 1999. - Type: PERU. Piura: Prov. Huancabamba, 11 km from Canchaque on road to Huancabamba, 1700 m, Weigend & Dostert 98/186 (Holotype: M!; Isotypes: B!, CPUN!, F!, HAO!, K!, MO!, NY!, P!, S!, US!, USM!, W!).
Nasa	jungifolia (Weigend) Weigend in P.M. Joergensen & S. León-Y.: 955. 1999. º Loasa jungifolia Weigend, Bot. Jahrb. Syst. 118/2: 258. 1996. - Type: Ecuador, Azuay, Tinajilla Pass S of Cumbe on Panamerican Highway Cuenca-Loja, 2600-3000 m, Weigend & Horn 3838 (M! holotype; K!, M!, QCA!, QCNE! isotypes).
Nasa	karsteniana (Urb. & Gilg) Weigend in Flora de Colombia 22: 47-48. 2001. º Loasa karsteniana Urb. & Gilg, Nova Acta Acad. Caes. Leop.-Carol. German. Nat. Cur. 76: 244. 1900. - Type: Colombia. Magdalena: San Miguel, sierra Nevada de Santa Marta, Karsten s. n. (W! holotype; F! fotograph, neg. nr. 32575).
Nasa	laxa (Macbr.) Weigend, Arnaldoa 5(2): 164. 1998. º Loasa laxa Macbr. in Field Mus. Nat. Hist. Bot. 13: 156. 1941. - Holotype: Peru. Cajamarca: Contumazá, Weberbauer 6993 (F!, MOL!).
Nasa	lehmanniana (Urb. & Gilg) Weigend in Flora de Colombia 22: 48-53. 2001. º Loasa lehmanniana Urb. & Gilg, Nova Acta Acad. Caes. Leop.-Carol. German. Nat. Cur. 76: 213. 1900. - Type (designated in Flora de Colombia 22: 52. 2001)): Colombia. Caldas: near Río Chinchiná and Río de los termales, 2200-2500 m, Lehmann 3078 (G! lectotype; BM, B† isolectotypes; F! fotograph, neg. nr. 10149). = Loasa grandiflora Urb. & Gilg, Nova Acta Acad. Caes. Leop.-Carol. German. Nat. Cur. 76: 208. 1900. - Type: Colombia, without precise location, Purdie 10149 (B†, K!).
Nasa	lenta (Macbr.) Weigend, Arnaldoa 5(2): 164. 1998. º Loasa lenta Macbr., Flied Mus. Nat. Hist: 13: 157. 1941. - Holotype: Depto Huánuco. [Prov. Ambo?]: On Río Huallaga, Muna, 3100 m, Weberbauer 6722 (F!, MOL!).
Nasa	limata (Macbr.) Weigend, Arnaldoa 5(2): 164. 1998. º Loasa limata Macbr. in Field Mus. Nat. Hist. 13: 157.- Holotype: Depto Apurimac. Prov. Abancay: Ampuy, 3200 m, (F!; US!, K!, G!, iso).
Nasa	loxensis (Kunth) Weigend in P.M. Joergensen & S. León-Y. 1999: 955. º Loasa loxensis Kunth. in Humb., Bonpl. & Kunth, Nov. gen. sp. 6: 116. 1823. - Type: [Ecuador, Loja] ÑLoxa peruvianorumì, Humboldt & Bonpland 3349 (P-BONPL! holotype, Photo F!, neg. nr. 38499). = Loasa calycina Benth., Pl. Hartw.: 132. 1839. - Type: [Ecuador, Loja] ÑLoxaì, Hartweg s.n. (K!, holotype).
Nasa	macrantha (Urb. & Gilg) Weigend, Arnaldoa 5(2): 164. 1998. ºLoasa macrantha Urb. & Gilg, Bot. Jahrb. 45: 468. 1011. - Holotype: Depto. Junin. Prov. Tarma: Palca, 3400 m, W eberbauer 2494 (B+, photo F!, neg. nr. 10203).
Nasa	macrorrhiza (Urb. & Gilg) Weigend, Arnaldoa 5(2): 164-165. 1998. º Loasa macorrhiza Urb. & Gilg, Ber. D. Bot Ges. 45: 467. 1911. - Holotype: Depto Ancash. Prov. Huaylas: Cordillera negra  above Caraz, 4200 m, Weberbauer 3080 (B+, photo F!, neg. nr. 10206; G!, MOL!, isos).
Nasa	macrothyrsa (Urb. & Gilg ) Weigend, Arnaldoa 5(2): 165. 1998. º Loasa macrothyrsa Urb. & Gilg, Bot. Jahrb. 45: 469. 1911. Holotpye: Depto Cajamarca. Prov.- San Miguel: San Miguel, 2400 m, Weberbauer 3907 (B+, photo F!, neg. nr. 10205).
Nasa	magnifica (Urb. & Gilg) Weigend, Arnaldoa 5(2): 165. 1998. º Loasa magnifica Urb. & Gilg, Monogr. Loasacearum: 204. 1900. - Holotype: [Depto Lima?] Without locality, MacLean s.n. (K!; B+, photo F!, neg. nr. 10207, iso). = Loasa macrophylla Urb. & Gilg, Bot. Jahrb. 45: 467. 1911. - Holotype: Depto Ancash. Prov. Chiquián: Above Ocros, 2900 m, Weberbauer 2718 (B+, photo F!, neg. nr. 10204).
Nasa	nubicolorum Weigend, Nord. J. Bot. 20 (1): 22-24. 2000. - Type: Peru, Dept. Chachapoyas, Prov. Chachapoyas, Distrito Leymebamba, near Laguna de los Condores, southern part, 2500-2700 m, Quipuscoa, Sagástegui, Leiva & Bejarano 1238 (M! holotype; HAO! isotype).
Nasa	olmosiana J.F.Macbr. (Weigend) P.M. Joergensen & S. León-Y.: 955. 1999. º Loasa olmosiana Gilg ex J.F.Macbr., Publ. Field Mus. Nat. Hist., Bot. Ser. 13: 161. 1941. - Type: Peru, Lambayeque, Olmos, Weberbauer 7097 (F!, holotype).
Nasa	orbicularis Weigend, Nasa and the conquest of South America: 218-219. 1997. - Type: Colombia. Valle de Cauca: Páramo at head of Quebrada de Sta Barbara, near Abelina, 3300 m, Core 1638 (US!).
Nasa	pascoensis Weigend, Nord. J. Bot. 20 (1): 25-26. 2000. - Type: Peru, Dept. Pasco, Prov. Oxapampa, Cordillera Yanachaga, road over Cerro Pajonal to Villa Rica drainage, ca. 12 km SE of Oxapampa, 2300-2500 m, Foster & Smith 9073 (M! holotype; F!, MO!, USM! isotypes).
Nasa	peltata (Urb. & Gilg) Weigend in P.M. Joergensen & S. León-Y.: 955. 1999. º Loasa peltata Urb. & Gilg, Nova Acta Acad. Caes. Leop.-Carol. Germ. Nat. Cur. 76: 205. 1900. - Type: [Ecuador, Tunguragua] Mount Mulmul, Spruce s.n. (K! holotype, photo F!, neg. nr. 497). = Loasa alpina Urb. & Gilg, Nova Acta Acad. Caes. Leop.-Carol. Germ. Nat. Cur. 76: 197. 1900. - Type: Ecuador, Chimborazo, eastern side of Mount Chimborazo, 4000 m, Wagner s.n. (M! holotype, photo F!, neg. nr. 20745).
Nasa	peltiphylla (Weigend) Weigend in P.M. Joergensen & S. León-Y.: 955. 1999. º Loasa peltiphylla Weigend, Sendtnera 3: 241. 1996. - Type: Colombia, Nariño, Pasto, SE flank of Morasurco range, Granadillo, 3100 m, Ramirez 6945 (M! holotype; COL!, K!, NY!, US!, PSO! isotypes).
Nasa	perijensis (Weigend) Weigend in Flora de Colombia 22: 55-60. 2001. º Loasa perijensis Weigend, Sendtnera 3: 235. 1996. - Type: Venzuela. Zulia: Maracaibo, serranía de Perijá, serranía de Valledupar, Campamento "Monte Viruela", 3000-3150 m, Tillet 747-1159 (M! holotype; MYF!, VEN isotypes).
Nasa	picta (W.J.Hooker) Weigend, Arnaldoa 5(2): 165. 1998. º Loasa picta W.J.Hooker, Curtis`Bot. Magazine: tab. 4429. - Lectotype (designated in Weigend 1998: 165): tab. 4429, l.c. - Epitype: Matthews s.n. (OXF!, G!, CBGE!, BM!).
Nasa	picta (W.J.Hooker) Weigend subsp. pamparomasii Weigend & Rodriguez, Arnaldoa 7(1-2): 19-25. 2000. - Type: Peru. Dpto Ancash. Prov. Huaylas. Distrito Pamparomas: Carretera Karka - Pamparomas, 09°03'03" S - 77°58'30" W, 2850 m, 5.5.2000, Weigend & Salas 2000/619 (USM! holotype; HUT!, M!, F!, NY! isotypes)
Nasa	pilovena Weigend, Nasa and the conquest of South America: 219. 1997. - Type: Colombia. El Valle: Cordillera Central, western slope, headwaters of Río Tuluá, Quebrada de las Vegas, páramo 3400-3500 m, Cuatrecasas 20345 (US!; iso: US!)
Nasa	poissoniana (Urb. & Gilg ) Weigend, Arnaldoa 5(2): 165. 1998. º Loasa poissoniana Urb. & Gilg, Monogr. Loasacearum: 226 - Holotype: [Cuzco?] Without locality, Gay 1975 (P!, Photo F, neg. nr. 38482). = Loasa cuzcoensis Killip, Journ. Wash. Acad. Science 18: 91. 1928. - Type: Depto. Cuzco. Prov. Cuzco: Cuzco, Herrera 1465 (NY!, F!, fragment G!, photo F, neg. nr. 63399).
Nasa	profundilobata (Werderm.) Weigend in P.M. Joergensen & S. León-Y.: 955. 1999. º Loasa profundilobata Werderm., Notizbl. Bot. Gart. Berlin 12: 370-371. 1934. - Type: Ecuador, Cañar, Tipochocha near Cañar, 2300 m, Diels 608 (B destr., holotype). - Neotype (designated in Weigend 1996b: 256): Road to Quinoas from Laguna Surocucho [= Laguna Llaviuco], near buildings on lagoon, 3150 m, Ortiz & Jaramillo 130 (AAU! neotype; NY!, isoneotype).
Nasa	profundiserrata Weigend, Nasa and the conquest of South America: 219. 1997. - Type: Colombia, Quindío: Pijáo, mountains southeast of Pijáo, on road margin in heavily disturbed forest, 2800 m, Weigend, Naumer Velez & Chacón 3626 (M!, iso Col).
Nasa	pteridophylla Weigend & Dostert, Harvard Papers in Botany 4/2: 457. 1999. - Type: [cultivated at Munich from seeds collected in:] PERU. La Libertad: Prov. Huamachuco, 13 km on road from Huamachuco to Chugay, 5 km before Chugay, 2550--2600 m, April 1997, Weigend, Dostert & Drießle 97/307C (Holotype: M!; Isotypes: F!, HAO!, K!, M!, MO!, NY!, USM!, W!, for dist.).
Nasa	pteridophylla Weigend & Dostert subsp. pteridophylla. 1999. For type see species.
Nasa	pteridophylla Weigend & Dostert subsp. geniculata Weigend & Dostert, Harvard Papers in Botany 4/2: 459. 1999. - Type: PERU. Cajamarca: Prov. Santa Cruz, ca. 3 km ENE Monteseco, 1750 m, 18.5.1987, Santisteban & Guevara 079 (Holotype: F!; Isotype: HUT!).
Nasa	puma-chini (Weigend) Weigend in P.M. Joergensen & S. León-Y.: 955. 1999. º Loasa puma-chini Weigend, Bot. Jahrb. Syst. 118(2): 270. 1996. - Type: Ecuador. Napo: Cantón Archidonia, San Pedro de Rucullacta, 1000 m, Cerón & Salazar 11968 (QCNE, holotype).
Nasa	puracensis Blake & Killip) Weigend in Flora de Colombia 22: 64-69. 2001. º Loasa puracensis Blake & Killip, J. Wash. Acad. Sci. 18/4: 90. 1929. - Type: Colombia Cauca: Monte Puracé, Parque Nacional Natural Puracé, 3100-3300 m, Pennell & Killip 6682 (US! holotype; NY! isotype).
Nasa	raimondii (Standley & Barkley ) Weigend, Arnaldoa 5(2): 166. 1998. º Loasa raimondii Standley & Barkley, Bull. Torrey Bot. Club 74: 82. 1947. - Holotype: Depto Cuzo. Prov. Urubamba: Hacienda Tuncapata Stihit, Vargas 2672 (F!).
Nasa	ramirezii (Weigend) Weigend P.M. Joergensen & S. León-Y. : 955. 1999. º Loasa ramirezii Weigend in Sendtnera 3: 231. 1996. - Type: Colombia, Nariño, Mpio Tangua, 5 km south of Tangua in a coffee plantation, 2600 m, Weigend & Ramírez 3280 (M! holotype; COL!, PSO! isotype).
Nasa	ranunculifolia (Kunth )Weigend, Arnaldoa 5(2): 166. 1998. º Loasa ranunculifolia Kunth, - In Humboldt, Bonpland & Kunth, Plantae aequinoctiales: 14. 1823. - Holotype: Depto Cajamarca. Prov. Cajamarca, 3000 m, Humboldt & Bonpland s.n. (P!, photo F, neg. nr. 400).
Nasa	rubrastra (Weigend) Weigend, Nasa & the conquest of South America: 214. 1997. º Loasa rubrastra Weigend, Bot. Jahrb. Syst. 118(2): 272. 1996. - Type: Ecuador, Napo, Baeza, SW of village in river margin, 2000-2200 m, Balslev & Madsen 10304 (QCA, holotype; AAU, COL, F, MBM, NY, isotypes).
Nasa	rufipila Weigend, Nasa and the conquest of South America: 219. 1997. - Type: Ecuador: Napo: Cosanga, trail east of town, Boeke & MacElroy 435 (NY! holotype; QCA! isotype).
Nasa	rugosa (Killip) Weigend, Arnaldoa 5(2): 166. 1998. º Loasa rugosa Killip, Journ. Wash. Acad. Sci. 18: 91. 1928. - Holotype: Depto Junin. Prov.?: Tambo de Vaca, Macbride 4350 (F!; US1, iso).
Nasa	sagastegui Weigend, Nord. J. Bot. 20 (1): 26-27. 2000. - Type: Peru, Dept. Piura, Prov. Huancabamba, Cuello del Indio between Canchaque and Huancabamba, 3000 m, Sagástegui & Cabanillas 8571 (M! holotype; HUT!, MO! isotypes).
Nasa	santa-martae (Weigend) Weigend in Flora de Colombia 22: 71-73. 2001. º Loasa santa-martae Weigend, Sendtnera 3: 236. 1996. Type: Colombia. Magdalena: Sierra Nevada de Santa Marta, San Pedro, above the Río Sevilla near the finca Cebolleta, 3000 m, Burbridge 311 (E! holotype; M fotograph; COL! isotype).
Nasa	schlimiana (Planchon & Triana) Weigend in Flora de Colombia 22: 74-77. 2001. º Loasa schlimiana Planchon & Triana, en Van Houtte, flor. Serr. 10: 89. 1854. - Type (designated in Flora de Colombia 22: 74. 2001)): icon in 1.c.: 89. t. 1001. (lectotype; the location of the original collection of Schlim is unknown, possibly it is MPU).
Nasa	solaria (Macbr.) Weigend, Arnaldoa 5(2): 166. º Loasa solaria Macbr., Field Mus. Nat. Hist. 13: 163. 1941 - Holotype: Depto. Lima. Prov. Lima: Viso, Macbride & Featherstone 577 (F!; US!, iso).
Nasa	solata (Macbr.) Weigend, Arnaldoa 5(2): 166. 1998. º Loasa solata Macbr., Field Mus. Nat. Hist. 13: 164. 1941. - Holotype: Depto  Piura. Prov. Ayavaca: Above Frias, 2300-2400 m, Weberbauer 6408 (F!; US!, iso).
Nasa	stuebeliana (Urb. & Gilg ) Weigend, Arnaldoa 5(2): 166. 1998. º Loasa stuebeliana Urb. & Gilg, Monogr. Loasac. : 228. - Syntypes: Chachapoyas, Matthews s.n. & Ñbetween Pacasmayo & Moyobamba at 2000 m, Stuebel 52d (B+, photo F, neg. nr. 10219). - Lectotype (designated in Weigend 1998: 166): Chachapoyas, Matthews (BM!; OXF!, CBGE!, B+, photo F, neg. nr. 10219, iso).
Nasa	tingomariensis (Macbr.) Weigend, Arnaldoa 5(2): 166. 1998. º Loasa tingomariensis Macbr., Field Mus. Nat. Hist. 13: 164-165. 1941. - Holotype: Depto Huánuco. Prov. Tingo María: Sandbank 10 km south of Tingo María, 700 m, Stork & Horton 9512 (F; K, iso).
Nasa	trianae (Urb. & Gilg) Weigend in Flora de Colombia 22: 77-81. 2001. º Loasa trianae Urb. & Gilg, Nova Acta Acad. Caes. Leop.-Carol. German. Nat. Cur. 76: 212. 1900. - Type (designated in Flora de Colombia 22: 77. 2001)): Colombia. Tolima: Mariquita, Toche, 1400m, Triana 366 (P! lectotype; K!, P! isolectotypes).
Nasa	triphylla (Juss.) Weigend in P.M. Joergensen & S. León-Y.: 955. 1999. º Loasa triphylla Juss., Ann. Mus. Natl. Hist. Nat. 5: 27, pl. 5, t. 2. 1804. - Type: (designated in Weigend, 1996a: 225): Drawing of ìCardamine urens in Peruviaî, by Morainville (Lectotype: P-JUSS!).
Nasa	triphylla (Juss.) Weigend subsp. colonchensis Weigend, Harvard Papers in Botany 4/2: 454. 1999. - Type: ECUADOR. Guayás: Cordillera de Colonche above Dos Mangas, 600 m, 18.9.1976, G. MÜLLER 3157 (Holotype: LZ!, photograph: M!, NY!).
Nasa	triphylla (Juss.) Weigend subsp. elegans Dostert & Weigend, Harvard Papers in Botany 4/2: 456. 1999. - Type: [cultivated at Munich from seeds collected in:] PERU. Amazonas: Prov. Bongará. Buenos Aires, along road to Rioja, between Buenos Aires and Esperanza (km 57,5), 1900 m, 7.3.-9.5.1998, Dostert 98/47C (Holotype: M!; Isotypes: F!, HAO!, K!, M!, MO!, NY!, USM!, W!).
Nasa	triphylla (Juss.) Weigend subsp. flavipes Weigend & Dostert, Harvard Papers in Botany 4/2: 456. 1999. - Type: PERU. Piura: Prov. Huancabamba, Quebrada W of Huancabamba, 1800 m, 17.5.1998, Weigend & Dostert 98/203 (Holotype: M!; Isotypes: CPUN!, F!, HAO!, K!, MO!, NY!, USM!, W!).
Nasa	triphylla (Juss.) Weigend subsp. loxensis Dostert & Weigend, Harvard Papers in Botany 4/2: 454. 1999. - Type: ECUADOR. Zamora-Chinchipe: road from Loja to Zamora, Quebrada Zurita, 2000--2100 m, September--October 1995, Weigend & Horn 3891 (Holotype: M!; Isotypes: MO!, QCA!, QCNE!, LOJA!).
Nasa	triphylla (Juss.) Weigend subsp. lutescens Weigend & Dostert, Harvard Papers in Botany 4/2: 453. 1999. - Type: Ecuador, Loja, Mollococha, 10 km W of Vilcabamba, 1600 m, Harling & Andersson 21774 (GB! holotype; QCA! isotype).
Nasa	triphylla (Juss.) Weigend subsp. papaverifolia (Kunth) Weigend in P.M. Joergensen & S. León-Y.: 955. 1999. º Loasa triphylla Juss. subsp. papaverifolia (Kunth) Weigend, Sendtnera 3: 226. 1996. º Loasa triphylla var. papaverifolia (Kunth) Urb. & Gilg, Nova Acta Acad. Caes. Leop.-Carol. Germ. Nat. Cur. 76: 239. 1900. º Loasa papaverifolia Kunth in Humb., Bonpl. & Kunth, nov. gen. sp. 6: 117. 1823. - Type: [Colombia. Tolima] Inter Quebrada de Toche et Los Galiegos, Quindío, Humboldt & Bonpland s.n. (P-Bonpl!, lecto; P!, P-Bonpl!, iso). = Loasa chelidoniifolia Benth., Bot. Voy. Sulph.: 101. 1844. - Type: [Colombia. Nariño] Mangles on the River Mira, Barclay 863 (K!, holotype). = Loasa vulcanica Andr., Illustr. Hortic. 25: 302. 1878. - Type: [Ecuador, Pichincha,] Ñin Cordillera occidentali Andium Equatoriensium ad pedem montis ignivomi Corazónì, circa 1500-1800 m, June 1876, André s.n. (K!, lectotype; NY! isolectotype).
Nasa	triphylla (Juss.) Weigend subsp. rudis (Benth.) Weigend, Harvard Papers in Botany 4/2: 453. 1999. º Loasa rudis Benth. in Pl. Hartweg.: 75. 1839. - Type: : [GUATEMALA:] Santa María, Hartweg 1040 (holotype: K!).
Nasa	triphylla (Juss.) Weigend subsp. triphylla - For type see species. º Loasa triphylla Juss. subsp. triphylla, Ann. Mus. Natl. Hist. Nat. 5: 27, pl. 5, t. 2. 1804. = Loasa triphylla Juss. var. genuina Urb. & Gilg, Nova Acta Acad. Caes. Leop.-Carol. Germ. Nat. Cur. 76: 238. 1900, nomen invalidum. - Type: Drawing of "Cardamine urens in Peruvia", Morainville (P-Juss!, lectoype, designated in Weigend 1996a: 225). Epitype: [Ecuador, Loja] Loxa, Humboldt & Bonpland 1837 (P-Juss!, P!, P-Bonpl!). = Loasa wallisii Maxim., Gartenflora 27: 357. 1878. - Type: Maxim., Gartenflora 27: 357. pl. 958. 1878. non L. triphylla Ruiz & Pav., Fl. peruv. prodr. 5: 18, t. 450, f. a. 1958, nomen illegitimum [= N. humboldtiana subsp. roseoalba).
Nasa	urens (Jacq.) Weigend, Arnaldoa 5(2): 167. 1998. º Loasa urens Jacq. Obs. Bot. 2: 15 (1784), Tab. = Loasa hispida L.f., Syst.veg. 12: 364 (1786). = Loasa ambrosiaefolia Juss., Mem.Mus.Nat.Hist.Nat. 5: 26, tab. 4 f.1. 1804. - Lectotype (designated in Weigend 1998: 167): Tab. 38, l.c., epitype: Cult. at Vienna, Jacquin s.n.(epitype: W!, isotype: BM!). = Loasa bipinnatifida Ruiz & Pavon, Flora Peruviae et Chilensis 5: 403, tab. 439. 1952, - Type: Tab. 439 l.c.
Nasa	urentivelutina Weigend, Nord. J. Bot. 20 (1): 29-31. 2000. - Type: Peru, Dept. Cajamarca, Prov. Celendin, Abra de Gelic on road Celendin to Balsas, 2900-3000 m, Weigend, Franke, Skrabal & Gonzales 98/308 (M! holotype; CPUN!, F!, USM! isotypes).
Nasa	vargasii (Macbr.) Weigend, Arnaldoa 5(2): 167. 1998. º Loasa vargasii Macbr., Field Mus. Nat. Hist. 13: 166. - Type: Peru. Depto Apurimac. Prov. Abancay: Río Pachaca, 2000 m, Stork, Horton & Vargas 10531 (UCS, fragment & Photo F!, neg. nr. 10531).
Nasa	weberbaueri (Urb. & Gilg) Weigend, Arnaldoa 5(2): 167. 1998. º Loasa weberbaueri Urb. & Gilg, Ber. D. Bot. Ges. 45: 467. 1911. - Holotype: Depto Cajamarca. Prov. Huambos: Huambos, 3100 m, Weberbauer 4183 (B+, photo F!, neg. nr. 10225; G!, iso).

Petalonyx	crenatus A. Gray ex Watson, Proc. Am. Acad. Sci. 17: 358. 1882 - Type: Mexico. Coahuila: San Lorenzo de Laguna, 75 miles SW of Parras, May 1880, Palmer 833 (GH, iso US). ñ Distribution: Mexico. Coahuila. (Ref.: Davis & Thompson 1967: 12-13).
Petalonyx	linearis Greene, Bull. Calif. Acad. Sci. 1: 288. 1885. - Type: Mexico. Baja California: Cedros Island, E side, 1.5.1885, Greene s.n. (CAS). ñ Distribution: USA: California, Arizona. Mexico: Sonora, Baja California, Islands of Golf of California. (Ref.: Davis & Thompson 1967: 13-14).
Petalonyx	nitidus Watson, Am. Nat. 7: 300. 1873. º Petalonyx thurberi var. nitidus (Watson) M.E.Jones, Contr. West. Bot. 12: 16. 1908. ñ Type: USA. Nevada: Southern Nevada, anno 1871, Wheeler s.n. (GH). ñ Distribution: USA: California, Nevada, Utah, Arizona. (Ref.: Davis & Thompson 1967: 16-17).
Petalonyx	parryi A.Gray, Proc. Am. Acad. 10. 72. 1874. º Petalonyx nitidus var. parryi (A.Gray) Urb. & Gilg, Nova Acta Acad. Caes. Leop.-Carol. German. Nat. Cur. 76: 20. 1900. ñ Type: USA. Utah: Southern Utah, St. George, anno 1874, C.C. Parry 75 (GH). ñ Distribution: USA: Nevada, Arizona, Utah. (Ref.: Davis & Thompson 1967: 147-18).
Petalonyx	thurberi  A.Gray, Mem. Am Acad. 5: 319. 1855. ñ Type: USA. Arizona: Valley of the Rio Gila, June 1850, Thurber s.n. (GH). ñ Distribution: USA: California, Nevada, Arizona. Mexico: Sonora, Baja California. (Ref.: Davis & Thompson 1967: 14-15).
Petalonyx	thurberi A.Gray subsp. thurberi ñ Distribution: USA: California, Nevada, Arizona. Mexico: Sonora, Baja California. (Ref.: Davis & Thompson 1967: 15).
Petalonyx	thurberi subsp. gilmanii (Munz) Davis & Thompson, Madroño 19(1): 15. 1967. º Petalonyx gilmanii Munz, Leafl. West. Botany 2: 69. 1938. ñ Type: USA. California: Inyo County, Ryan Wash, Death Valley, 1500 ft., 20.5.1937, M. F. Gilman 1568 (POM 228696, iso: CAS). ñ Distribution: USA: California. (Ref.: Davis & Thompson 1967: 15-16).

Plakothira	frutescens Florence, Bull. de Muséum d'Histoire Naturelle IV B, Adansonia 7: 240-245. - Type: Nukuhiva, route Toovii - Terre déserte, 10 km après le col, 1000m, fl., 5.6.1984, Florence 6915 (holo-, P; iso-, BISH, Papeete).
Plakothira	parviflora Florence, Allertonia, 7(4): 239-240. 1997. - Type: Marquesas Islands. Fatu Hiva: ridge from Omoa to Aiguilles Rocheuses, along ridge crest to Tefatutea Peak; sea cliffs of Needle Rocks above Tahaoa, 594m, 25.7.1988, (fl, fr), S. Perlman, J. Florence & S. Travis 10154 (Holotype: BISH; Isotypes: AD, BISH, E, F, GH, K, LE, MO, P, PAP, PTBG, US).
Plakothira	perlmanii Florence, Allertonia, 7(4): 240-243. 1997. - Type: Marquesas Islands. Nuku Hiva: Tapueahu Valley (label erroneously says Matatekouaehi Valley), 2 miles up valley, 289m, 1.7.1988 (fl, fr), S. Perlman 10017 (Holotype: BISH; Isotypes: AD, F, K, MO, NY, OS, P, PAP, PTBG 2 sheets, US).

Presliophytum	incanum (Grah.) Weigend, Nasa & the conquest of South America: 219. 1997. - Basionym: Loasa incana Grah., Edinb. Phil. J. 11: 169. 1830. - Holotype: Peru. Lima: Prov. Canta, Yazo, Cruckshanks s.n. anno 1830 (E!; iso: K, BM). = Loasa atriplicifolia K.Presl, Symb. Bot. 1: 61, plate 39. 1831. - Lectotype: Plate 39, l.c. = Loasa ruiziana G.Don, Gen. Syst. 4: 64. 1834. - Holotype: Plate 441 f.a, Ruiz & Pavón, Flora Peruviae, et Chilensis V. 1952. - Typotype: "Loasa sp. nova de Huayaquil" Pavón (BM!). - Loasa incana Ruiz & Pavón, Flora Peruviae, et Chilensis V: Plate 441 f.a. 1952. - Typotype: "Loasa sp. nova de Huayaquil", Pavón (BM!). nom ill.
Presliophytum	heucheraefolium (Killip) Weigend, Nasa & the conquest of South America: 219. 1997. - Basionym: Loasa heucheraefolia Killip, Journ. Wash. Acad. Science 18: 90. 1928. - Holotype: Depto Ancash. Prov.?: Tambo de Paricota, Macbride & Featherstone 2543 (F!, photo neg. nr. 50217).
Presliophytum	arequipensis Weigend, in Weigend, Nasa & the conquest of South America: 219. 1997. - Holotype: Peru. Arequipa. Mollendo, in rocky cliff, Stafford 1017 (BM!).

Xylopodia

klaprothioides Weigend, Nasa & the conquest of South America: 215. 1997. - Holotype: Peru. Cajamarca. Prov. Contumaza: Road from Contumaza to Chilete, 2900m. Weigend, Dostert & Drießle 97/450 (M!; isos: USM!, F!).