256 
ANNALS NEW YORK ACADEMY OF SCIENCES 
161. Ipomoea signata House, Muhlenbergia 3 : 46. 1907. 
Stout, perennial; stems and foliage densely pubescent or hirsute; stems re- 
trorsely hirsute and terete; leaf-blades ovate, cordate, acute, 4-6 cm. long; ped¬ 
uncles 8-12 cm. long, 1- to 3-flowered; calyx glabrous; sepals ovate, 9-10 mm. 
long; corolla crimson, 6-7 cm. long, glabrous. 
Type locality: Between Jacaltenango and San Martin, Guatemala. 
Distribution: Known only from the type locality. 
Specimens examined; E. W. Nelson 3595, 1895 (type — 252762 — N). 
162. Ipomoea tuxtlensis sp. nov. 
A slender, perennial, twining vine, 2-3 m. long, softly pubescent; leaf-blades 
ovate, cordate, acuminate, entire or more or less 3-lobed, 5-8 cm. long, nearly as 
broad, softly appressed-pubescent above, sericeous or silvery beneath; petioles 
shorter than the blades; inflorescence subsessile on peduncles 4-8 mm. long, 3- to 7- 
flowered; bracts linear-spatulate, 8-18 mm. long; pedicels 4-5 mm. long or less; 
sepals subequal, oblong-ovate, outer ones densely sericeous-pubescent, rounded at 
apex, inner ones glabrous or nearly so, submembranaceous, retuse at apex, 10-12 
mm. long; corolla deep purple, 3.5-5 cm. long, the limb 3-4 cm. broad and 5-lobed. 
Mexico: Chiapas, Tuxtla, 2400-2800 ft. alt. E. W. Nelson 309 4, 1895 
(type — 231+01$ — N); 3102, 1895 {233069 — N, G). 
163. Ipomcea demerariana Choisy in DC. Prodr. 9: 361. 1845.— 
Griseb. FI. Br. W. Ind. 471. 1861. 
Leaf-blades orbicular, deeply cordate, acute, 8-16 cm. broad; peduncles 10-20 
cm. long, 3-several flowered; sepals 15-18 mm. long; corolla purple (yellow fide 
Choisy), 5-8 cm. long, funnelform; anthers contorted. 
Type locality: Demerara. 
Distribution: Lesser Antilles, Guiana and Brazil. 
Specimens examined: Dominica; Lloyd 24-1, 633, 932, 1903 (Y). 
Guadeloupe; Duss 4026, 1899 (Y). Martinique; Duss 4102, 4402, 1899 
(Y). 
164. Ipomoea chenopodiifolia (Mart. & Gal.) Hensley, Biol. Cent.- 
Am. Bot. 2: 385. 1882. 
Calonyction chenopodiifoluwi Mart. & Gal. Bull, in Acad. Brux. XII. 2: 269. 1845. 
— Walp. Rep. 6: 531. 1847. 
The perennial stems woody, muricate or tuberculate, hirsute with reflexed hairs; 
leaf-blades 8-12 cm. long, about 5 cm. broad, pilose beneath and on the veins above, 
the base hastate with a broad open sinus: petioles short; peduncles shorter than the 
petioles, pilose, 3-4 cm. long, 1-flowered; sepals ovate, obtpse, apiculate, glabrous; 
corolla purple, 5-8 cm. long. 
