HOUSE, THE GENUS IPOMCEA 261 



Type locality : Panama . 



Distribution: Southern Mexico to Colombia. 



Specimens examined: Chiapas: Between Hacienda Juncana and San 

 Vicente, 4200-6000 ft. alt. E. W. Nelson 3499, 1895 (252747 — N); Between 

 San Cristobal and Teopisca, 6700-8500 ft. alt. E. W. Nelson 3479, 1895 

 (N). Referred to I. morelii by description only. The above description 

 applies to the specimens here cited which may not be /. morelii. 



Species Inquirendse. 



Ipomoea apiculata Mart. & Gal. in Bull, in Acad. Brux. XII. 2: 262 1845.— 

 Walp. Rep. 6: 534. 1847. 

 aristulata Mart. & Gal. 1. c. 263. Walp. 1. c. 535. 

 costaricensis Kuntze, Rev. Gen. 443. 1891. 

 nematoloba Urban, Sym. Ant. 3: 349. 1902. 

 karwinskiana Regal, Ind. Sem. Hort. Petrop. 1857: 46. 1858. 

 lactescens Beuth. PI. Hartw. 120. 1843. 

 pauciflora Mart. & Gal. 1. c. 266. 

 proximum (Mart. & Gal.) Hemsley, Biol. Cent .-Am. Bot. 2: 392. 1882, 



(Calonyction proximum Mart. & Gal. 1. c. 268.) 

 schiedeana Ham. in Lindl. Bot. Reg. Misc. 19. 1838. 

 sericophylla Peter, in Engl. & Prantl. Nat. Pflanzenfam. IV. 3a: 31. 1891. 

 triflora Maria & Velasco, in La Naturaleza 2 : 338. 1870. 

 truncata Lem. Hort. Univ. 2: 33. PI. 49. 

 walpersiana Duchass.; Urb. 1. c. 345. 



Species excludendse. 



Ipomoea cegyptia L. Sp. PI. 162. 1753.= Operculina segyptia House. 



alata Rose, Contr. U. S. Nat. Herb. 1: 108. 1891.= Operculina rubicunda 

 House. 



alatipes Hook. Bot. Mag. pi. 5330. 1862.= Operculina alatipes House. 



alba L. Sp. PI. 161. 1753.= Calonyction album (L.) House. 



aZitssma (Spreng.) Bert.; G. Don, Gen. Syst. 4: 273. 1838.= Exogonium 

 racemosum Choisy. 



alulata Miq. Linnaea 18: 599. 1844.= Operculina alata (Ham.) Urban. 



ampUata Choisy, DC. Prodr. 9: 361. 1845.= Operculina ampliata House. 



antilliana Millsp. Field. Col. Mus. Bot. 2: 84. 1900.= Turbina corymbosa 

 (L.) Raf. 



arenaria Steud. Nom. ed. 2. 1: 815. 1841.= Exogonium arenarium Choisy . 



argentifolium A. Rich, in Sagra Fl. Cub. 2: 131. 1850.= Exogonium. 



aurea Kellogg; Curran, Bull. Cal. Acad. 1: 143. 1885.= Operculina. 



bona-nox L. Sp. PI. ed. 2. 228. 1762.= Calonyction aculeatum (L) House. 



ferac/eatoCav. Ic. 5: 51. 1799.= Exogonium bracteatum Choisy; G.Don. 



bradeata Rud.; Ledeb. in Schrad. Neues Jour. Bot. 2: 292. 1807.= Exo- 

 gonium. 



