236 ANNALS NEW YORK ACADEMY OF SCIENCES 



112. Ipomoea tenuiloba Torr. Bot. Mex. Bound. 148. 1859.— A. Gray, 



Syn. Fl. N. Am. 2: Suppl. 434. 1886. 



Type locality : Near Puerto de Paysano, western Texas. 



Distribution: Hills and rocky places, western Texas to southern 

 Arizona and adjacent Mexico. 



Specimens examined: Near Puerto de Paysano, Bigelow (type — 

 C); C. Wright 1617, (G). Valley of the Rio Grande, below Donana, 

 Parry 989 (G). 



113. Ipomo3a pilosissima Mart. & Gal. Bull, in Acad. Brux. XII. 2: 



264. 1845.— Walp. Rep. 6: 535. 1847. 



Slender, twining, pilose or hirsute; leaf-blades 5- to 7-pedately parted, the seg- 

 ments ovate-oblong, 3-5 cm. long, acuminate or attenuate, densely sericeous-pilose; 

 peduncles 5-7 cm. long, 1-flowered; sepals densely setaceous-hirsute, lanceolate, 

 acute, equal; corolla campanulate-funnelform, purple, 4-5 cm. long. 



Type locality: Sierra de Yavezia, and near Oaxaca, Mexico. Not 

 known by any recent collections. 



114. Ipomsea leptosiphon S. Wats. Proc. Am. Acad. 23: 280. 1880. 



Leaf-segments 5, filiform, 4-6 cm. long; peduncles 1-flowered; sepals unequal, 

 oblong-lanceolate, acute, 8-10 mm. long, the outer ones muricate-keeled; corolla 

 slender, 8-10 cm. long, white with a pink or rose-colored limb. 



Type locality: Near Chihuahua, Mexico. 



Distribution: Thin gravelly soil, northern Mexico. 



Specimens examined: Chihuahua; Pringle 1337, 1887 (type — G, C, 

 N); Townsend & Barber 271, 1889 (N, Y); E. W. Nelson 4822, 1898 (N); 

 E. W. Nelson 6169a, 1899 (N). 



115. Ipomoea muricata Cav. Ic. 5 : 52. fl. 478. j. 2. 1794. Not/. 



muricata Jacq. 1798. 



Convolvulus capillaceous H. B. K. Nov. Gen. & Sp. 3: 97. 1819. 



Ipomoea armata Roem. & Schult. Syst. 4: 214. 1819. 



Cantua tuberosa Roem. & Schult. 1. c. 893. 



Ipomoea capillacca G. Don, Gen. Syst. 4: 267. 1838.— Choisy in DC. Prodr. 9: 353. 



1845.— A. Gray, Syn. Fl. N. Am. 2: Suppl. 434. 1886. 

 Leptocallis quinta G. Don, 1. c. 260. 



Leptocallis armata G. Don; Sweet, Hort. Brit. ed. 3, 482. 1839. 

 Quamoclit pedata Mart. & Gal. Bull, in Acad. Brux. XII. 2: 270. 1845. 



Type locality: "Habitat in Huanajuato." 



