206 ANNALS NEW YORK ACADEMY OF SCIENCES 



46. Ipomcea cissoides (Lam.) Griseb. Fl. Br. W. Ind. 473. 1861.^ 



Convolvulus cissoides Lam. Tabl. Encyc. 1: 462. 1791. — Vahl, Eclog. Am. 2: 15. 



1798. 

 Convolvulus calycinu^ H. B. K. Nov. Gen. & Sp. 3: 109. 1819. 

 Convolvulus orinocensis Willd.; Roem. & Schult. Syst. 4: 303. 1819. 

 Batatas cissoides Choisy in M6m. Soc. Phys. GenSv. 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 nam. 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); Wibon 1224 & 3639, 1904 (Y); Mexico: Acapulco, Palmer US, 

 1895 (Y, N). Guatemala; Heyde & Lux. 4355, 1892 (Y). 



Ipomoea 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. Tyrianthinae. 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. 47. /. iostemma. 



Sepals 3-5 mm. wide X 14-18 mm. long; corolla 



5-6 cm. long. 48. /. variabilis. 



Sepals 20-30 mm. long; corolla 2-3 cm. long. 49. /. portoricensis. 



Leaf-blades not hastate at the base. 

 CoroUa 2-3 cm. long; sepals hispid; lobes of the leaf- 

 blades lanceolate. 50. /. harhatisepala. 

 CoroUa 5-8 cm. long; sepals pubescent or tentacular. 



Sepalsdensely tentacular, 18-20 mm. long. 51. I. silvicola. 



» B. D. Jackson, Journ. Bot. 30: 547. 1892, on the dates of Grisebach's Flora. 



