HOUSE, THE GENUS IPO MCE A 
205 
Type locality: St. Croix. 
Distribution: Thickets near the coast, West Indies and the gulf region 
of Mexico, Central America to Brazil. 
Illustrations: Bot. Reg. pi. 89. Meissn.; Mart. FI. Bras. 7: pi. 78. 
Specimens examined : Cuba; C. Wright 1647, 1859 (G). 
44. Ipomcea learii Paxton, Bot. Mag. 6:267. 1839. 
Pharbitis learii Hook. Bot. Mag. pi. 3928, 1841.— Lindl. Bot. Reg. pi. 56. 1841.— 
Choisy in DC. Prodr. 9: 343. 1845.— Fletcher in Bailey's Cyclop. Am. Hort. 
819. 1900. 
Closely resembling I. vahliana, and perhaps identical; stems finely pubescent 
and tomentulose; leaf-blades glabrous above, finely pubescent beneath with pale 
hairs; peduncles capitately 3- to 9-flowered; bracts linear, 12-20 mm. long; sepals 
linear-lanceolate, 18-22 mm. long, minutely pubescent with appressed silvery hairs; 
corolla 5-6 cm. long, blue, turning rosy in age, the tube white below. 
Type locality: Said to come from Ceylon by Paxton, but Lindley (he.) 
says that to be a mistake. The species is common in cultivation, and only 
the following herbarium specimens can be referred here. 
Guatemala; C. C. Deam 316, 1905 (G). Costa Rica: Pittier 16277, 
1902 (G). 
45. Xpomoea cathartica Poir. Encyc. Suppl. 4: 633. 1816. — Griseb. 
FI. Br. W. Ind. 473. 1861. 
Convolvulus africanus Nicolson, Hist. Nat. St. Dom. 260. 1776. 
Convolvulus pudibundus Lindl. Bot. Reg. pi. 999. 1826. 
Ipomcea pudibunda G. Don, Gen. Syst. 4 : 276. 1838. 
Pharbitis cathartica Choisy in DC. Prodr. 9: 342. 1845. 
Ipomcea fastvgiata Chapm. FI. Southern States 344. 1860. Not I. fastigiata Sweet. 
Glabrous or nearly so; leaf-blades entire to deeply 3-lobed; sepals glabrous or 
nearly so, lanceolate, attenuate, 15-20 mm. long, appressed to the corolla-tube, 5-to 
7-nerved at the base; corolla sometimes white. 
Type locality: St. Domingo. 
Distribution: Thickets in sandy or calcarious soil, peninsular Florida, 
Bermudas, Bahamas and West Indies, gulf region of Mexico, Central and 
tropical South America. 
7. Cissoides. 
One species: Corolla small, white. 
46. I. cissoides. 
