March 28, 1907 ; 45 
broad, cordate, the apex obtuse, margins angled but scarcely 
lobed, sparingly hirsute on both surfaces, more so on the mar- 
gins and veins beneath; petioles as long as the blades or shorter, 
finely pubescent, 15-20 mm. long: peduncles exceeding the sub- 
tending petioles but rarely the blades, 1-3-flowered, thickened 
below the calyx: sepals unequal, oblong-lanceolate, blunt, 5-8 
mm. long: corolla funnelform, rose-purple, 4-5 cm. long, the 
tather abruptly expanding limb subentire, 3.5-4 cm. broad: the 
outer sepals and the pedicels slightly verruculose. 
Mexico: Orizaba, Mueller (without number), 1855. Type 
in the herbarium of the New York Botanical Garden. 
There are some strong points of similarity between this 
species and the description of Z. suffudta (H. B. K.) G. Don, but 
that according to its description has acute or acuminate leaves 
which appear to clasp the base of the flower, while the corolla 
is described as being considerably larger. 
Ipomoea vulsa 
Perennial below, twining or trailing: leaf blades variously 
3-5 lobed, in the mature blades the middle lobe much the 
largest, oblong or obovate-lanceolate, acute, 1.5-4 cm. long, 
lateral lobes smaller, obtuse, base of the blade cordate by the 
spreading basal lobes; smaller leaves with blades 3 lobed, lobes 
rounded or some blades with rather narrow lobes; petioles 
longer than the blades: peduncles exceeding the subtending pet- 
ioles, 3-5cm. long, 1-2-flowered: sepals unequal, the outer ones 
obovate, about 6mm. long, the inner ones broadly oblong, 8-10 
mm. long, rounded, erose and ciliate: corolla blue or purplish, 
3-4.cm. long, the limb campanulate-funnelform, 3-4.5 cm. broad. 
Mexico: Orizaba, Mueller (without number), 1855. Type, 
sheet no. 291646 in the herbarium of the U. S. National Mu- 
seum. Sheet no. 291644, seems to be of the same collection, 
and is identical with the other sheet. 
