258 
ANNALS NEW YORK ACADEMY OF SCIENCES 
Y); 7241, 1896 (G); 13779, 1906 (G). Deam 59, 1900 (G). Oaxaca: ' 
Conzatti & Gonzalez 505, 1897; 968, 1895 (G); Pringle 5677, 1894 (G). 
168. Ipomcea cardiophylla A. Gray, Syn. FI. N. Am. 2 1 : 213. 1878. 
Glabrous; leaf-blades ovate, hastate-cordate, 5-8 cm. long, thin; sepals ovate, 
acute, green with white scarious margins, 4-5 mm. long; corolla blue with a white 
tube 2-3 cm. long; capsules ovoid. 
Type locality: Near El Paso, Texas. 
Distribution: Rocky places, western Texas to Arizona and northern 
Mexico, south to Oaxaca. 
Specimens examined: Texas; C. Wriglit 511 (type — G). Chihuahua; 
Pringle 617, 1885 (G). Coahuila; Palmer 904, 1880, (G, N). Oaxaca; 
Rev. L. C. Smith 847, 1895 (G); Gonzalez & Conzatti 898, 1898 (G). 
169. Ipomcea perlonga Robinson, Proc. Am. Acad. 29: 319. 1894. 
Young foliage minutely silvery-pubescent, stems with or without prickles; 
leaf-blades orbicular-ovate, cordate, acute, 3-10 cm. broad, more or less strigillose- 
pubescent, paler beneath; peduncles 15-30 cm. long, 5- to 15-flowered; pedicels 
slightly thickened and deflexed in fruit, 6-15 mm. long; sepals 4 mm. long, obtuse; 
corolla 4 cm. long, minutely pubescent without on the plicae. 
Type locality: Tequila, Mexico. 
Distribution: Lower California and western Mexico to Central 
America. 
Specimens examined: Tequila, Palmer 4519, 1893 (type — G, N, C). 
170. Ipomcea parasitica (H. B. K.) G. Don, Gen. Syst. 4: 275. 1838. 
Convolvulus parasiticus H. B. K. Nov. Gen. & Sp. 3: 103. 1819. 
Convolvulus circinnatus Willd.; Roem. & Schult. Syst. 4: 302. 1819. 
Stems glabrous or finely pubescent in lines, with a few weak recurved prickles; 
leaf-blades orbicular-ovate, 6-8 cm. long, the apex often acuminate, minutely pubes¬ 
cent above, less so beneath; peduncles shorter than the petioles 5- to 9-flowered; 
sepals 4-5 mm. long, outer ones subacute and minutely cuspidate, pubescent, inner 
ones rounded; corolla silvery-canescent in bud, about 3 cm. long, pubescent without 
on the tube. 
Type locality: Near Caracas, Venezuela. 
Distribution: Southern Mexico to Venezuela. 
Specimens examined: Costa Rica; Nicoya, Tonduz 13679, 1900 (Y). 
San Jose, Tonduz 1561, 1893 (G). Guatemala; Santa Rosa, Heyde & 
Lux. (J. Donnell Smith 4024), 1892 (G). 
