\ 



HOUSE, THE GENUS IPOMCEA 249 



Rica, Tonduz 13675, 1900 (Y). Cuba; Pringle 57, 1903 (G, Y). Britton 

 & Wilson 8, 271, 1903 (Y). Britton & Shafer 578, 269, 1903 (Y). Pol- 

 lard, Palmer & Palmer 272, 1902 (N, Y). Underwood & Earle 112, 1638, 

 1903 (Y). Isle of Pines, Curtiss 249, 1903 (G, Y, N). Bahamas: Great 

 Bahama, Brace 3646, 1905 (Y). Jamaica; Britton 973, 1907 (Y). Hayti; 

 Nash 349, 1903 (Y); Nash & Taijlor 1043, 1905 (Y). Montserrat; 

 Shafer 167, 654, 1907 (Y). Dominica; Lhyd 354, 1903 (Y). Porto Rico; 

 Heller 6341, 1902 (Y); Millspaugh 754, 1899 (Y). Culebra, Britton & 

 Wheeler 127, 1906. 



Most of the so-called I. fastigiata, of the American tropics doubtless 

 belongs here. 



* 148. IpomoBa jicama Brandegee, Bull. Cal. Acad. II. 2: 188. 1889. 



Type locality: Magdalena Islands, Santa Margarita Island, San 

 Jorge. 



Distribution: Lower California and Islands off the coast. 



Specimens examined: Magdalena Bay, Lower Calif. Brandegee, 1889 

 (N). Also fragment of type in Herb. Gray. 



19. Aequisepalae. Twining, perennial or annuals with entire or lobed 

 leaf-blades and herbaceous or woody stems, glabrous or pubescent; sepals 

 coriaceous, equal or nearly so, obtuse, acute or cuspidate; corolla purple, 

 yellow or white. 



Leaf-blades strongly sagittate; corolla purple. 149. /. sagittata. 



Leaf-blades ovate or cordate-sagittate (in /. polyanthes). 

 Corolla yellow. 



Corolla 2-3 cm. long; inflorescence umbellately 

 many-flowered; foliage glabrate or finely pubes- 

 cent. 150. /. polyanthes. 

 Corolla 4-5 cm. long; stems strongly hirsute. 151. /. longipes. 

 Corolla purple, blue or white. A. 

 A. Sepals cuspidately pointed or acuminate. 

 Sepals ciliate or pubescent; annuals. 



Corolla 3 cm. long, or longer. 152. /. trichocarpa. 



Corolla less than 3 cm. long. 



Peduncles longer than the petioles. 

 Corolla narrowly funnelform, 15 mm. 



long or less, 153. I. triloba. 



Corolla broadly funnelform, about 20 



mm. long. 154. 7. ramoni. 



Peduncles shorter than the petioles; co- 

 rolla-tube white, limb often pink. 155. I. lacunosa. 



