290 H. D. House. 
rarely contracted below, usually triangular-lanceolate and acuminate, 
appressed-hirsute above, stiffly hirsute beneath and on the petioles; 
peduncles 1-few flowered; bracts filiform, 4—6 mm long; sepals linear- 
lanceolate, 18—26 mm long, tips scarcely spreading, margin ciliate and 
base not conspicuously broadened, sparingly berbate with stiff, whitish 
hairs arising from conspicuously white prominent papilliae; corolla 3 cm 
long, blue with a white tube; seeds finely rough-pubescent. 
Arizona: Tuscon, Thornber 29, 1903 (type — Y). New Mexico: 
Florida Mts., Mulford 1088, 1895 (Y). Sonora: Guaymas, Palmer 295, 
1887 (N, Y, G). St. Magdalena, Schott, 1851 (C). Canon de los Guerryos, 
F. E. Lloyd (Lumholtz Exped.) 432, 1894 (G) Chihuahua: South- 
western part, Palmer 105, 1885 (N, G). 
11. Ipomoea Vahliana J. D. House, l. c., p. 204. 
Convolvulus acuminatus Vahl, Symb. Bot., III; 26. 1794. 
Ipomoea acuminata Roem. € Schult, Syst., IV; 228. 1819. Meissn., 
l. c., 226. — Griseb., Le, 473. Not. I. acuminata Ruiz. € Pav., 1799. 
Ipomoea punctata Macf. in Hook. Bot. Misc., Il; 116. 1831. Not I. 
punctata Pers., 1805. 
Ipomoea nil Gardn. in Hook. Journ. Bot., I; 180. 1842. Not 1. ni. 
Roth, 1797. 
Pharbitis acuminata Choisy in DC., Prodr., IX; 348. 1845. 
Distribution: Thickets near the coast, West Indies and the gulf 
region of Mexico, Central America to Brazil. 
12. Ipomoea cissoides (Lam.) Griseb. var. guadaloupensis (Steud.) J. D. 
House, l. c., p. 206. 
u yr wind pilosus Wikstr. in Vet. Acad. Handl. Stock., MDCCCXXVII; 
Convolvulus guadaloupensis Steud. Nom., ed. 2, 409, 1841. 
Batatas cissoides var. integrifolia Choisy in DC., Prodr., IX; 339. 1845. 
13. Ipomoea iostemma J. D. House, l. c., p. 207 ist nach handschr. 
Angabe von House = Ipomoea brachypoda Benth. 
Costa Rica: Nicoya, Tonduz 13680, Jan. 1900 (type — Y). Mexico: 
Ixtapa, Jalisco, E. W. Nelson 4141, 1897 (N). 
14. Ipomoea ignava J. D. House, Le p. 214. 
Stems trailing from a perennial, tuberous root; pubescent, slender; 
leaf-blades triangular-ovate or triangular-hastate, 1—6 cm long and as 
broad, obtuse, sinuately toothed toward the base, basal auricles 5—15 mm 
long, appressed-hirsute or glabrate above, pubescent beneath, on the 
petioles and at the base of the peduncles; peduncles slender, often 
exceeding the leaves, 1-flowered; pedicel 5—10 mm long; sepals very 
unequal, oblong-lanceolate, outer ones 4—5 mm long, obtuse and muri- 
cate, inner 5—7 mm long and rounded; corolla slender-funnelform, 5— 
7 em long, blue, the white tube constricted just above the calyx, limb 
5-lobed, 4—6 cm broad; capsules globose, 1 cm or less thick, 2-celled, 
4-seeded; seeds glabrous. 
Mexico: Oaxaca; Las Sedas to La Carbonera, Conzatti & Gon- 
zalez 261, 1897 (type — G); La Carbonera, 7200 ft., alt, 804, 1895 (G). 
