HOUSE, THE GENUS IPOMCEA 193 



I 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 acvuninate, 

 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. Ipomoea 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, 

 acimiinate, 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 raber (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. 

 /. brevifolia G. F. W. Mey. Fl. Esseq. 100. 1818. 

 C. setifera Spreng. Syst. 1: 606. 1825. 

 Calystegia setifera Meissn.; Mart. Fl. Bras. 7: 316. 1869. 

 /. lesteri Baker, in Kew Bull. 83. 1892. 

 Ipomoea assumptionis Britt. Ann. N. Y. Acad. Sci. 7: 170. 1893. 



