FERNALD, — ACAPULCO PLANTS, 89 
been placed there with some hesitation. The oblanceolate slightly 
pubescent old leaves, the pubescent calyx and fruit, and the pallid bark, 
agree very well with that species. Maba albens, however, is described 
as having dull green leaves when young and the midrib depressed be- 
neath. In these fruiting specimens the leaves are glossy above and the 
midribs prominent beneath. 
Evolvulus commelinifolius. An annual plant with sparingly 
branched lignescent stems 3 to 5 dm. high: stems and both sides of the 
leaves densely rufous-hispid and villous: lowest stem-leaves oblong, sub- 
sessile, blunt at the apex, acutish or rounded at the base, 4 or 5 em. long, 
the upper gradually decreasing in size; floral-leaves becoming approxi- 
mate, distichous, conduplicate, broadly deltoid-ovate, with deeply cordate 
bases, the lowest 4 em. long, and 2} cm. broad, the upper barely 14 cm. 
long: flowers solitary, axillary, on very short peduncles: sepals Jance- 
subulate, 6 mm. long, white with setose-hispid pubescence: corolla pale 
blue with white stripes, 13 mm. high: capsule obovate; seed olive-green 
with minute black dots. — Shady places in the mountains and river-bot- 
toms, December, 1894 (no. 312). 
Evolvulus ovatus. A prostrate much-branched plant: stems slen- 
der, 3 dm. long, densely silky-villous: leaves ovate, or oblong-ovate on 
the branchlets, acutish, subsessile, with cordate bases, silky-villous on 
both sides, 7 to 13 mm. lon , 4 to 9 mm. wide, closely approximate, or 
even imbricated, toward the ends of the branches: flowers axillary, soli- 
tary, on very short peduncles: sepals densely villous, lanceolate, 4 to 7 mm. 
long: corolla blue, scarcely exceeding the calyx: capsule depressed- 
globose; seed smooth. — Ona shady hillside, December, 1894 (no. 318). 
Near Z. holosericeus, HBK., and E. discolor, Benth., but distinguished 
from them by the broader leaves with the upper surfaces pubescent. 
_ Ipomeea (Pharbitis) ampullacea. A stout woody vine climb- 
ing high over trees and shrubs; the pale brown bark covered with ap- 
pressed retrorse hairs: leaves broadly ovate or suborbicular, 7 to 15 cm. 
broad, deeply cordate at bases, short-acuminate, acute, or even obtuse, 
entire or shallowly 8-lobed, the lateral lobes blunt, strigose-pubescent, 
especially on the pale lower surface; the veins prominent beneath ; 
petioles retrorse-strigose, } to 1 dm. long: peduncles stout, equalling or 
€xceeding the leaves, puberulent toward the tips, branching into a loose 
*yme: pedicels 1 or 2 cm. long, thickened upward, generally bearing an 
oblong tuft of dense matted hairs : bracts strigose-pubescent, ovate-lanceo- 
late, blunt, 1} cm. long: calyx strigose-pubescent ; sepals coriaceous, 
unequal, the two outer much larger than the inner, 2} to 4 cm. long, the 
