Ipomoea genus speciebus novis Americae septentrionalis auctum. 229 
2—3-flowered; bracts oblong-spatulate, 1—2,5 cm long; pedicels 5— 
8 mm long: sepals unequal, elliptical-oblong, acute or acuminate, 2,5— 
3 cm long, often tinged with red above; corolla broadly funnelform, about 
6 em long, blue, glabrous, white below on the plicae and tube, the tube 
1,5—2 em thick. 
Mexico: Jalisco; Vicinity of San Sebasian, 3850—5000 ft. alt. E. 
W. Nelson 4087, 1897 (typé, sheet no. 327167 — N). 
5. Ipomoea hirtiflora Mart. & Gal. Bull. Acad. Brux., XII, II; 264 nach 
handschr. Angabe von House an das Repertorium = Ipomoea villifera 
House 1845. 
6. Ipomoea oreophila J. D. House, |. c., p. 195. 
Low and feebly twining, about 1 m long from a woody root; stems 
and foliage glabrous or minutely pubescent; leaf-blades ovate-hastate or 
triangular-ovate, entire except for the spreading basal auricles which are 
1—2-lobed or toothed; blades 3—5 cm long, 2—4 cm wide; peduncles 
slightly longer than the petioles; pedicels less than 1 cm long; outer 
sepals similar to the leaf-blades in shape, pubescent, subherbaceous, 
triangular-ovate, hastate or subcordate, acute, 10—12 mm long; corolla 
funnelform, 6 cm long, the limb blue, the tube white below. 
Mexico: Hidalgo; Rocky hills, Lena Station, 8300 ft. alt. Pringle 
10034, 24 Aug., 1905 (type -— G, Y). Chiapas; Near San Cristobal, E. 
W. Nelson 3149, 1895 (233090 — N, G). Valley of Mexico; Mt. Zocoalco, 
Guadeloupe, Bourgeau 728 & 797, 1866 (G). 
7. Ipomoea Lindheimeri A. Gr. var. subintegra J. D. House, |. c., p. 196. 
Leaf-blades entire or angled, shallowly cordate, acuminate, 1—4 cm 
long; sepals ovate-lanceolate, 16—18 mm long, 4—8 mm broad; corolla 
6—7 cm long. 
Arizona: Near Ft. Huachuca, Lemmon 2835, 1882 (type — G). 
8. Ipomoea heterophylla Orteg. var. aemula J. D. House, l. c., p. 196. 
Sepals ovate-lanceolate, 20—25 mm long, 6—8 mm broad; corolla 
large, the tube 4 mm thick at the base, 6—7 mm thick above the calyx. 
subsalverform, the limb 6—7 cm broad. 
Chihuahua: Hills near Guerrero, Pringle 1339, 1887 (type — 
G, Y, N) 
9. Ipomoea heterophylla Orteg. var. subcomosa J. D. House, l. c. 
P. 196. 
Stems and foliage very densely appressed sericeous-pubescent ; 
peduncles 1—2 cm long; outer sepals 15—18 mm long at flowering 
time, 8—10 mm broad at the truncate base, becoming twice as long 
and a half broader in fruit, the tips attenuate, tinged with red; corolla 
6—7 em long, the tube only 2—3 mm thick above the calyx, the limb 
5 cm broad. 
Durango, Palmer 590, 1896 (type — N, G, Y). 
10. Ipomoea desertorum J. D. House, l. c., p. 203. 
Closely related to J. hederacea; pale-green; stems scabrous and 
Sparsely pilose with loosely reflexed hairs; leaf-blades 3-lobed, lobes 
