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, 4352), 
1892 (G). 
173. Ipomcea pedicellaris Benth. Bot. Voy. Sulph. 135. 1844.— Walp. 
Rep. 6:533. 1847. 
Ipomoea rubroccerulea A. Gray, Proc. Am. Acad. 21: 434. 1886. Not I. rubrocce- 
rulea Hook. 1834. 
Ipomoea 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; Schott, 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. Ipomoea wallii (Morren) Hemsley, Biol. Cent.-Am. Bot. 2: 396. 
1882. 
Batatas wallii 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. 
