260 ANNALS NEW YORK ACADEMY OF SCIENCES 



Guadeloupe; Duss 3591, 1894 (Y); Antigua; Duss 3, 1902. 

 Guatemala; Santa Rosa, Heyde & Lux. (ex J. Donnell Smith, 4^52), 

 1892 (G). 



173. Ipomcea pediceUaris Benth. Bot. Voy. Sulph. 135. 1844.— Walp. 

 Rep. 6: 533. 1847. 



Ipomcea rubroccerulea A. Gray, Proc. Am. Acad. 21: 434. 1SS6. Not 7. rubrocce- 



rulea Hook. 1S34. 

 Ipomcea grayi Rose, Contr. U. S. Nat. Herb. 1: 107. 1891. 



Leaf-blades broadly ovate, 6-10 cm. long, shallowly cordate or subtruncate, 

 entire, acuminate; peduncles 4-6 cm. long, 1-several flowered; pedicels as long as 

 the peduncle, thickened, curved; sepals oblong-ovate, unequal, obtuse, 6-8 mm. 

 long; corolla purple. 



Type locality: Acapulco, Mexico, and Tiger Island, Gulf of Fonseca. 



Distribution: Western Mexico. 



Specimens examined: Sonora; ScJiott, 1855 (C). Ymala, Palmer 

 1704, 1891; 1997a, 1902; 710, 1890. Tepic, Palmer 1997, 1892. Chihua- 

 hua, Palmer 102, 1885 (N, C, G). Sinaloa; Lamb 359, 1894 (G); Brande- 

 gee, 1904 (G). Guerrero; Acapulco, Palmer 154, 1894-96 (N, G, C). 



\ 174. Ipomcea wallii (Morren) Hemsley, Biol. Cent.-Am. Bot. 2: 396. 



1882. 



£atoias wiaZZw Morren, in Ann. Soc. d'Argic. Bot. Gand. 2; 285. 1846. Walp. Rep. 

 6: 530. 1847. 



Perennial from a tuberous root; glabrous, swollen at the nodes and bearing 

 tentacular outgrowths on both sides of the node; petioles stout, leaf-blades ovate, 

 cordate, acute, 7-15 cm. long; sepals ovate, acute; peduncles shorter than the 

 petioles. 



Type locality: Guatemala. Not known by any recent collections in 

 American herbaria. Exact relationship doubtful. 



175. IpomcEa morelii Duchass. & Walp. Linnaea 23: 752. 1850. — 

 Walp. Ann. Bot. Syst. 3: 109. 1852-53. 



Perennial, glabrous, twining 1-4 m. long; leaf-blades narrowly ovate, deeply 

 cordate, long acuminate, 6-9 cm. long, 3-6 cm. broad, hastately lobed at the base or 

 entire, lobes laterally acute, basally rounded, pale beneath; petioles shorter than 

 the blades; peduncles as long as the petioles or longer, 3-7 cm. long, 1- to 5-flowered; 

 pedicels slightly thickened, 1-2 cm. long; sepals subequal, glabrous, oblong-ovate, 

 5-8 mm. long, the outer slightly the shortest, obtuse; corolla 5-6 cm. long, white 

 below, the tube constricted within the calyx, the limb deep-blue, 4-5 cm. broad, 5- 

 lobed. 



