204 ANNALS NEW YORK ACADEMY OF SCIENCES 



Convolvulus hederaceus L. Sp. PI. ed. 2, 219. 1762, in part as to f. 93 of Dillenius. 



Convolvulus nil L. Sp. PI. ed. 2, 219. 1762 (in part). 



C. dillenii Desr. in Lam. Encyc. 3: 544. 1789. 



Convolvuloides triloba Moench, Meth. 451. 1794. 



Ipomaea cuspidata Ruiz. & Pav. Fl. Pereuv. 2: II. 1799. 



Ipomoea dillenii Roem. & Schult. 1. c. 227. 



Convolvulus peruvianus Spreng. Syst. 1: 593. 1825. 



PharbUis nil Choisy in M6m. Soc. Phys. Genev. 6: 440. 1833.— In DC. Prodr. 9: 



342. 1845. 

 P.cuspidataG.'Don, Gen. Syst. ^■. 270. 1838. Choisy, 1. c. 

 P. speciosa Choisy in DC. Prodr. 9: 343. 1845. 

 P. nil var. limbata Hook. f. Bot. Mag. pi. 5720. 

 /. trichocalyx Steud. Norn. Ed. 2, 1: 819. 1841. 

 /. longicuspis Meissn. in Mart. Fl. Bras. 7: 227. 1869. 

 I. hederacea Baker & Rendle, in T. Dyer, Fl. Trop. Afr. 4==: 159. 1905. 



Usually larger than I. hederacea; lobes of the leaf -blades rarely contracted below, 

 middle lobe usually dilated at the base; sepals linear-lanceolate, not dilated at base, 

 20-30 mm. long, 3-4 mm. broad, densely hispid; corolla 4.5-6 cm. long. 



Type locality: Africa. 



Distribution: Circumtropical. In America; Florida, Bermudas, 

 West Indies, Mexico and Central America to Paraguay and Peru. 



Illustrations: Dill. Elth. pi. 81 f. 93. Bot. Mag. pi. 5720. Bentley 

 & Trin. Med. pi. 185. Ruiz. & Pav. Fl. Peruv. 2: pi. 119 f. a. 



Specimens examined: Florida; Marco, Hitchcock 227, 1900. Jack- 

 sonville, Curtiss 5281, 1894; 5800, 1896. Jamaica; Harris 9155, 1906 (Y). 

 St. Thomas; Eggers, 1887 (Y). St. Croix; Ricksecker 187, 1896 (Y). 

 Martinique; Duss 431 & 1231, 1884 (Y). Guadeloupe; Duss 2^75, 1893 

 (Y). Guatemala; J. Donnell Smith (legit Heyde & Lux.) 4732, 1889 (G). 

 Nicaragua; Chas. L. Smith, 1893 (G). Costa Rica; J. Donnell Smith 

 (legit Tonduz 9864) 7090, 1896 (G). Nicoya, Tonduz 13678, 1900 (Y). 



43. Ipomcea vahliana nom. nov. 



Convolvulus acuminatus Vahl, Symb. Bot. 3: 26. 1794. 



Ipomcea acuminata Roem. & Schult. Syst. 4: 228. 1819. Meissn. 1. c. 226. — 



Griseb. 1. c. 473. Not /. acuminata. Ruiz. & Pav. 1799. 

 Ipomoea punctata Macf. in Hook. Bot. Misc. 2: 116. 1831. Not I. punctata Pers. 



1805. 

 Ipomoea nil Gardn. in Hook. Joum. Bot. 1: 180. 1842. Not /. nil Roth, 1797. 

 PharbUis acuminata Choisy in DC. Prodr. 9: 348. 1845. 



Leaf -blades ovate, entire or 3-lobed, lobes rarely contracted below; sepals 

 elongated, linear-lanceolate, 15-30 mm. long, sparingly pilose, tips appressed to the 

 corolla-tube; corolla 5.5-7 cm. long. 



