Psychotria siggersiana Standi., J. Wash. Acad. 

 Sci. 15: 289. 1925. Type: COSTA RICA: 

 Limon, vicinity of Guapiles, 300-500 m, Mar 

 1924, P. C. Standley 37210 (Holotype US 

 1153058 (photos MEXU, PTBG)). 



Psychotria simiarum Standi., Publ. Field 

 Columbian Mus., Bot. Ser. 4: 344. 1929. 

 Type: HONDURAS: Atlantida, Lancetilla 

 Valley, near Tela, 20-600 m, 6 Dec 1927-20 

 Mar 1928, P. C. Standley 56772 (Holotype F 

 581799 (photos MEXU, PTBG); Isotype US 

 (photos MEXU, PTBG)). 



Psychotria sixaolensis C. W. Ham., Phytologia 

 64: 234. 1988. Type: COSTA RICA: Limon, 

 along road between Limon and Shiroles, 

 along Rio Sixaola, 0.9 miles SW of Bambu, 

 6.5 miles SW of Bribni, less than 50 m alt., 12 

 Aug 1977, T. B. Croat 43303 (Holotype MO 

 2587929 (photo PTBG)). 



Psychotria skutchii Standi, Field Mus. Nat. 

 Hist., Bot. Ser. 17:283. 1937. Type: 

 GUATEMALA: San Juan Ixcoy, oak woods, 

 8000 ft., 22 Aug 1924, A. F. Skutch 1074 

 (Holotype F 813469 (photos MEXU, PTBG); 

 Isotype A, n.v.).— Psychotria galeottiana 

 (M. Martens) C. M. Taylor & Lorence 



Psychotria solitudinum Standi., Publ. Field 

 Mus. Nat. Hist., Bot. Ser. 22: 207. 1940. 

 Type: COSTA RICA: San Jose, Valley of El 

 General, 700 m, Jun 1939, A. F. Skutch 4347 

 (Holotype F 974021 (photos MEXU, PTBG); 

 Isotype US (photos MEXU, PTBG)). 



Psychotria sousae Lorence & Dwyer, Bol. Soc. 

 Bot. Mexico 47: 59. 1987. Type: MEXICO: 

 Oaxaca, Mun. de Matias Romero, zona de 

 Uxpanapa, lomas al E de Arroyo Hamaca, 9.5 

 km al SE de La Floresta, a 21.5 km S de 

 Esmeralda, 400 m, 22 May 1981, T. Wendt, A. 

 Villalobos, I. Navarrete & J. Anguiano 3282 

 (Holotype MEXU; Isotypes CHAPA, PTBG). 



Psychotria stenostachya Standi., Publ. Field 

 Columbian Mus., Bot. Ser. 8: 207. 1930. 

 Type: PERU: Loreto, Killip & Smith 29294 

 (Holotype F, n.v.). 



Psychotria steyermarkii Standi., Publ. Field 

 Mus. Nat. Hist., Bot. Ser. 22: 387. 1940 

 Type: GUATEMALA: Quezaltenango, lower 

 south-facing slopes of Volcan Santa Maria, 



Finca Pireneos and San Juan Patzulin, 

 1300-1400 m, 6 Jan 1940, J. A. Steyermark 

 33700 (Holotype F 1043219 (photos MEXU, 

 PTBG)). 



Psychotria stipulata (Oerst.) Hemsl., Biol. 

 Centr.-Amer., Bot. 2: 51. 1881. Mapouria 

 stipulata Oerst., Amer. Cent. 17, tab. 14, fig. 

 7. 1863. Type: MEXICO: Veracruz, Papantla, 

 Liebmann 11615 (Lectotype C, here 

 designated (photos MEXU, PTBG); 

 Isolectotype C (photos MEXU, PTBG)). 

 Syntype: MEXICO: Veracruz, Papantla, 

 Liebmann 11636 (C (photos MEXU, PTBG)). 

 Liebmann 11 61 5, a flowering specimen with a 

 duplicate, is the more suitable choice for 

 lectotype. — Psychotria costivenia Griseb. 

 var. costivenia 



Psychotria stockwellii C. W. Ham., Phytologia 

 64: 235. 1988. Type: COSTA RICA: Alajuela, 

 region of Zarcero, 1800 m, 18 Oct 1937, A. 

 Smith 543 (Holotype US; Isotype F). 



Psychotria subsessilis Benth. in Oerst., Vidensk. 

 Meddel. Dansk Naturhist. Foren. Kjobenhavn 

 1852: 32. 1853. Type: COSTA RICA: Ad 

 Turrialba, Oersted 11613 (Holotype C (photos 

 MEXU, PTBG): Isotype US (photos MEXU, 

 PTBG)).— Psychotria costivenia Griseb. var. 

 costivenia 



Psychotria suerrensis Donn. Sm., Bot. Gaz. 

 (Crawfordsville) 27: 337. 1899. Type: 

 COSTA RICA: Suerre, Llanuras de Santa 

 Clara, 300 m, Feb- Apr 1896, J. D. Smith 

 6580 (Syntype US 943504 (photos MEXU, 

 PTBG), US 943405 (photos MEXU, PTBG)); 

 Tonduz 8683 (Syntype US, n.v.). 



Psychotria sylvivaga Standi., J. Wash. Acad. 

 Sci. 18: 274. 1928. Type: COSTA RICA: 

 Heredia, Yerba Buena, northeast of San 

 Isidro, ca. 2000 m, 28 Feb 1926, P. C. 

 Standley & J. Valerio 49989 (Holotype US 

 1306274 (photos MEXU, PTBG)). 



Psychotria tacarcunensis Dwyer, Ann. 

 Missouri Bot. Gard. 67: 431. 1980. Type: 

 PANAMA: Darien, elfin forest at top of W 

 peak of Cerro Tacarcuna massif, 1800-1850 

 m, 28 Jan 1975, A. Gentry & S. Mori 13974 



