1907] HOUSE—NEW CONVOLVULACEAE 4Il 
Related to I. Wolcottiana Rose, from which it differs by its smaller corolla 
and smaller leaves of different shape. 
Ipomoea Lozani Painter, sp. nov. (fig. 2).—§ STROPHIPOMOEA; 
Integrijoliae——Perennial, at least below, 
twining, 1-2™ long or more: stems herb- 
aceous above, glabrous: leaf-blades nar- 
rowly ovate, deeply cordate-sagittate, 
abruptly narrowed, attenuate and muc- 
ronate, 5-8°™ long including the basal 
auricles which are rounded, converging, 
and often overlapping; petioles as long 
as the midvein of the blade, or slightly 
longer: peduncles 1-flowered, shorter 
than the subtending petioles, finely 
pubescent especially near the base; 
pedicel portion puberulent, thickened 
and fleshy, 3-4°™ long: sepals equal, 
coriaceous, puberulent and slightly ten- 
tacular, oblong-lanceolate, 12-14™™ long, 
acute: corolla campanulate-funnelform, 
blue or purple, 6-7°™ long; the some- 
what 5-lobed limb as broad; tube whitish below. 
Mexico: State of Queretaro, stony hillside near San Juan del Rio, Rose and 
Painter 9542, Aug. 18, 1905; type, sheet no. 453033 in U. S. Nat. Herb. 
Related to I. tentaculifera Greenm. but with deeper cordate leaf-blades, shorter 
peduncles and pedicels, and less tentacular sepals. 
Ipomoea mestecensis, nom. nov.—Calonyction dubium Mart. & 
Gal. in Bull. Acad. Brux. XII. 2:268. 1845. Ipomoea dubia Hemsley, 
Biol. Cent.-Am. Bot. 2:368. 1882; not J. dubia R. & S. Syst. 42216. 
1819. 
Type locality: In woods, Mesteca and Yavesta, Oaxaca, Mexico. 
Distribution: Woods, southern Mexico in the state of Oaxaca. 
Specimens examined: Oaxaca; Sierra de San Felipe, Chas. L. Smith gto, 
1894, alt. 7000-8000%t; foothills near Oaxaca, Pringle 4693, 1894, alt. 6000-70008. 
Ipomoea silvicola, sp. nov. (jig. 3).—§ STROPHIPOMOEA.—T wining, 
probably several meters high, slender: stems pubescent above: leaf- 
blades orbicular-ovate, cordate, acuminate, entire or 3-lobed, the 
