HOUSE, THE GENUS IPOMCEA 
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21. Ipomoea invicta sp. nov. 
A stout, woody twining vine; stems, petioles and peduncles minutely pubescent: 
leaf-blades ovate, cordate, acute or abruptly acuminate, 8-14 cm. long, glabrous 
above, pubescent beneath, principal veins about 6 pairs; petioles shorter than the 
blades; peduncles 6-10 cm. long, 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 cm. 
long, blue, glabrous, white below on the plicae and tube, the tube 1.5-2 cm. thick. 
Mexico: Jalisco; Vicinity of San Sebasian, 3850-5000 ft. alt. E. W. 
Nelson 4087, 1897 (type, sheet No. 327167 — N). 
22. Ipomoea lambii Fernald, Bot. Gaz. 20: 535. 1895. 
Stems slender, covered with reflexed, tuberculate hairs; leaf-blades ovate, 
acuminate, 7-15 cm. long, often 3-lobed or subhastate, strongly pubescent beneath; 
peduncles 5-10 cm. long, 2-4-flowered; bracts elliptical-ovate, 2-2.5 cm. long; 
sepals ovate-lanceolate, 1.5-2 cm. long; corolla 7-9 cm. long, rose-purple. 
Type locality: Near Zopelote, Tepic, Mexico. 
Distribution: Western Mexico. 
Specimens examined: Lamb 556, 1895 (type—G, Y, N). 
23. Ipomma hirtiflora Mart. & Gal. Bull. Acad. Brux. XII. 2: 264. 
1845.— House, Muhlenbergia 3: 38. 1907. 
Stout, twining, perennial; stems densely pilose with reflexed brownish hairs; 
leaf-blades orbicular-ovate, entire or 3-lobed, acute, densely appressed pubescent 
above, silky beneath, 6-12 cm. long, deeply cordate; peduncles 12-20 cm. long, 
several-flowered; bracts ovate-lanceolate, 2-2.5 cm. long; sepals narrowly lanceolate, 
acuminate, pilose, 16-22 mm. long; corolla purple, slender, about 5 cm. long and 3 
cm. broad, pilose without on the plicae and tube. 
Type locality: Woods, Chinantla, Mexico. 
Distribution: Southern Mexico and Guatemala. 
Specimens examined: Near Jacaltenango, Guatemala, E. W. Nelson 
3579, 1895, 3500-5400 ft. alt. (N). 
24. Ipomoea ruber (Vahl) Millsp. Field Col. Mus. Bot. 2: 86. 1900. 
Convolvulus ruber Vahl, Eclog. Am. 2: 12. 1798. 
Ipomoea setifera Poir. Encyc. 6: 16. 1804.— Choisy in DC. Prodr. 9: 359. 1845.— 
Hallier f. in Bot. Jahrb. 18: 143. 1893. 
I. brevifolia G. F. W. Mey. FI. Esseq. 100. 1818. 
C. setifera Spreng. Syst. 1: 606. 1825. 
Calystegia setifera Meissn.; Mart. FI. Bras. 7: 316. 1869. 
I. lesteri Baker, in Kew Bull. 83. 1892. 
Ipomoea assumptionis Britt. Ann. N. Y. Acad. Sci. 7: 170. 1893. 
