HOUSE, THE GENUS IPOMOEA 229 



Mexico: Chiapas, Near San Cristobal, 7000-8000 ft. alt. E. W. Nelson 

 3281, 1895 (type — 233075 — N, G). 



. 91. Ipomcea jalapa (L.) Pursh; Bot. Mag. p/. 1572. (as synonym) 

 1 Au. 1813. I. jalapa Pursh, FI. Bor. Am. 1 : 146. 1814 (excl. 

 descr.) 



Convolvulus radice tuberose cathartica, Houst. in Mill. Diet. No. 19. 1741. 



C. foliis variis, pedunculis unifloris, radice tuberosa, Mill. Diet. No. 32. 1759. 



C. americanus jalapium dictus, Ray. Hist. 724. 



Bryonia mechoacana nigricans, Bauh. Pin. 298. — Hist. 151. 



Jalapium, mechoacanna nigra, Dal. Pharm. 201. 



Convolvulus jalapa L. Mant. 43. 1759. — Mill. Diet. ed. 8, 1768. 



Convolvulus mechoacan Vitm. Sunama PI. 1: 434. 1789. 



Convolvulus lividus Moc.; Steud. Nom. ed. 2, 1: 409. 1841. 



Convolvulus jatiauca J. F. Gmel. Syst. 339. 1796. 



Batatas jalapa Choisy, Conv. Rar. 125. 1837.— In DC. Prodr. 9: 338. 1845. 



Leaf-blades triangular-ovate, entire or 3-lobed, plicate-veined; peduncles usu- 

 ally very short, 1-flowered; sepals subequal, broadly ovate, obtuse or rounded, 9-12 

 mm. long; the slender corolla pink or purple. 



Type locality: Near Vera Cruz, Mexico. 



Distribution: Gulf region of Mexico to Venezuela. 



Illustrations: Bot. Mag. p/. 1572. Bot. Cab. p/. 518. Wagner, 

 Pharm. pis. 151, 152. Nees & Esenbeck, Off. Pfl. 1 : pl.197,198. Cassone, 

 Fl. Med. Farm. p/. S-^. Woodv. Med. Bot. pZ. ^i. Plench, Ic. PI. Med. 

 pi. 94. 



Specimens examined: San Luis Potosi, Pringle 3511, 1890 (G). Vene- 

 zuela; Fendler2083 {G). 



• 92. Ipomcea leonensis Robinson, Proc. Am. Acad. 26: 170. 1891. 



Leaf-blades palmately 5-lobed, 6-12 cm. broad, punctate above, with a soft, 

 deciduous, white tomentum beneath, lobes obtuse; sepals ovate, rounded, about 8 

 mm. long, canescent; corolla 5-7 cm. long. 



Type locality: Near Monterev, Mexico. 



Distribution: Calcareous ledges Nuevo Leon to Oaxaca. 



Specimens examined: Monterey, Pringle 28Ifi, 1889 (type — G). San 

 Luis Potosi, Pringle 50^0, 1891 (G). Oaxaca; Cerro de Huanculla Con- 

 zattii & Gonzalez 1215, 1901 (G). 



. 93. Ipomcea lacteola nom. nov. 



Ipomcea calophylla Wright; Griseb. Cat. PI. Cub. 204. 1866. Not /. calophylla 

 Fenzl. 1844. 



