HOUSE, THE GENUS IPOMCEA 
229 
Mexico: Chiapas, Near San Cristobal, 7000-8000 ft. alt. E. W. Nelson 
8281, 1895 (type — 233075 — N, G). 
91. Ipomcea jalapa (L.) Pursh; Bot. Mag. pi. 1572. (as synonym) 
1 Au. 1813. I. jalapa Pursh, FI. Bor. Am. 1: 146. 1814 (excl. 
descr.) 
Convolvulus radice tuberosa cathartica, Houst. in Mill. Diet. No. 19. 1741. 
C. joliis 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. Phann. 201. 
Convolvulus jalapa L. Mant. 43. 1759.— Mill. Diet. ed. 8, 1768. 
Convolvulus mechoacan Vitm. Summa 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. pi. 1572. Bot. Cab. pi. 518. Wagner, 
Pharm. pis. 151, 152. Nees & Esenbeck, Off. Pfl. 1: pi.197,198. Cassone, 
FI. Med. Farm. pi. 349. Woodv. Med. Bot. pi. 21. Plench, Ic. PI. Med. 
ol. 94. 
Specimens examined: San Luis Potosi, Pringle 3511, 1890 (G). Vene¬ 
zuela; Fendler 2083 ( 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 Monterey, Mexico. 
Distribution: Calcareous ledges Nuevo Leon to Oaxaca. 
Specimens examined: Monterey, Pringle 2840, 1889 (type — G). San 
Luis Potosi, Pringle 5040, 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 I. calophylla 
Fenzl. 1844. 
