234 , H D. House. 
J. D. House, Le, p. 239 ist nach handschr. Angabe von House an das 
Repertorium = Ipomoea minutiflera (M. & G.) J. D. House. 
31. Ipomoea seducta J. D. House, 1. c., p. 241. 
Closely resembling I. purga; glabrous, perennial from a tuberous 
‚root; leaf-blades orbicular-ovate, cordate, 6—10 cm long, acuminate, basal 
sinus often closed, pale beneath; petioles short; peduncles as long as 
the petioles, usually 1-flowered; sepals unequal, outer ones lanceolate, 
4-5 mm long, acute, inner fully 10 mm long, subacute or obtuse; 
corolla 5—6 cm long, funnelform, the whitish tube expanding from the 
base, constricted within the calyx, limb purple, 5 cm broad; stamens and 
style included. 
Guatemala: Cubilquitz, Alta Verapaz, Tuerckheim (J. Donnell 
Smith distr. 7926), 1901 (type — C). Coban, Tuerckheim (J. Donnell 
Smith disir. 101), 1887 (C). Mexico: Chiapas, Near Yajalon E. W. Nel- 
son 3408, 1895 (252585 — N). 
32. Ipomoea aprica J. D. House, l. c., p. 243. 
Ipomoea angustifolia Choisy in DC., Prodr., IX; 367, 1845. — Meissn. 
in Mart, Fl. Bras., VII; 249, pl. 89, f. 2. 1869. Not 1. angustifolia 
Jacq., 1788. 
Brazil. 
33. Ipomoea sagittula J. D. House, l. c., p. 244. 
A slender, twining, perennial vine, with weak, woody stems, bark 
thin, whitish exfoliating; leaf-blades broadly lanceolate, acute and cuspi- 
date, base sagittate, 4—7 cm long, 1,5—3 cm broad, the basal auricles 
] em long or less, obtuse and clasping the stem, glabrous above, minu- 
tely white-dotted beneath; petioles 2—6 mm long; peduncles 1,5—2 cm 
long, 1-to 5-flowered, bracts minute; pedicels 1 cm long; sepals unequal, 
obtuse, ovate-oblong, outer ones 3—5 mm long, inner 5—7 mm long; 
corolla white, funnelform, about 3 cm long and as broad; capsules ovoid, 
8—9 mm long, 2-celled. 
Mexico: Jalisco; Between San Sebastian and Las Palmas, 3000— 
2500 ft. alt. E. W. Nelson 4129, Mar. 80, 1897 (type — N, G). 
34. Ipomoea rhomboidea J. D. House, 1. c., p. 245. 
A slender, twining vine from a perennial root; stems angled, minu- 
tely canescent; leaf-blades ovate, 3-lobed, shallowly cordate, 8—12 cm 
long and as broad, lobes contracted below, suborbicular, obtuse, thin and 
submembranaceous, reticulate-veined, minutely pubescent; petioles 6— 
10 cm long, very slender; peduncles 4—6 cm long, 1-to 3-flowered; 
pedicels 1—3 cm long, becoming 5 cm long in fruit; sepals very 
unequal, outer oblong, obtuse, subcanescent, 7—9 mm long, inner ones 
broader, rounded, 10—13 mm long; corolla white, tinged with purple- 
mauve below, funnelform, constrieted within the calyx, 6—7 cm long, 
limb 5-lobed, 5—6 cm broad, the plicae ending in minute cusps at the 
margin; capsules ovoid. 
Mexico: Sinaloa; Topolobampo, Palmer 227, Sept. 1897 (type — 
315548 — N). 
