206 
ANNALS NEW YORK ACADEMY OF SCIENCES 
46. Ipomcea cissoides (Lam.) Griseb. FI. Br. W. Ind. 473. 1861. 1 
Convolvulus cissoides Lam. Tabl. Encyc. 1: 462. 1791.— Vahl, Eclog. Am. 2: 15. 
1798. 
Convolvulus calycinus H. B. K. Nov. Gen. & Sp. 3: 109. 1819. 
Convolvulus orinocensis Willd.; Roem. & Schult. Syst. 4: 303. 1819. 
Batatas cissoides Choisy in Mem. Soc. Phys. Gen&v. 6: 437. 1833.— in DC. Prodr. 
9: 339. 1845. 
Merremia cissoides Hallier f. Bot. Jahrb. 16: 552. 1893. 
Rough-pubescent and hirsute; leaflets 5, sessile or stalked, lanceolate, or ovate- 
lanceolate, acute at the base, obtuse or acute at the apex, repand-dentate, 2-5 cm. 
long; outer sepals ovate at the base, 8-15 mm. long; corolla white, 3 cm. long or 
less. 
Type locality: Cayenne. 
Distribution: Cuba and southern Mexico to Colombia and Brazil. 
Specimens examined: Cuba; Wright 3084- (G); Curtiss 378, 1904 
(G, Y); Wilson 1224- & 3639, 1904 (Y); Mexico: Acapulco, Palmer 143, 
1895 (Y, N). Guatemala; Heyde & Lux . 4655, 1892 (Y). 
Ipomcea cissoides guadaloupensis (Steud.). 
Convolvulus pilosus Wikstr. in Vet. Acad. Handl. Stock. 1827: 60. 1828. 
Convolvulus guadaloupensis Steud. Nom. Ed. 2, 409, 1841. 
Batatas cissoides ver. integrifolia Choisy in DC. Prodr. 9: 339. 1845. 
Leaflets usually larger, entire, acuminate, less pubescent but the stem strongly 
pilose; corolla larger. 
Specimens examined: Cuba; Combs 680 ,1896 (Y-G, in part). 
8. TyrianthinaB. Twinning, perennial or annual vines, usually with 
pubescent foliage and sepals. Ovary 2-celled, 4-seeded; seeds glabrous. 
Leaf-blades cordate-hastate, the basal lobes rounded, 
laterally acute. 
Sepals 12-18 mm. long or less. 
Sepals 2 mm. wide X 10-12 mm. long, with lax 
tips; corolla 2-3 cm. long. 
Sepals 3-5 mm. wide X 14-18 mm. long; corolla 
5-6 cm. long. 
Sepals 20-30 mm. long; corolla 2-3 cm. long. 
Leaf-blades not hastate at the base. 
Corolla 2-3 cm. long; sepals hispid; lobes of the leaf- 
blades lanceolate. 
Corolla 5-8 cm. long; sepals pubescent or tentacular. 
Sepals densely tentacular, 18-20 mm. long. 
47. 
7. iostemma. 
48. 
I. variabilis. 
49. 
I. portoricensis. 
50. 
I. barbatisepala. 
51. 
I. silvicola. 
1 B. D. Jackson, Journ. Bot. 30: 547. 1892, on the dates of Grisebach’s Flora. 
