CONVOLVULACEAE 389 
5. M. gemella (Burm.) Hallier f. 
A slender, twining, glabrous vine reaching a length of 4 to 5m. Leaves 
ovate, 4 to 9 cm long, entire, sharply acuminate, base prominently cordate, 
the lobes rounded. Cymes axillary, solitary, peduncled, 8 to 15 cm long, 
usually many-flowered. Sepals green, elliptic, obtuse, 5 to 6 mm long. 
Cerolla yellow, about 2.5 em long, funnel-shaped. Capsule ovoid, about 
1 em in diameter. , 
In thickets and open places, fl. Oct—Feb.; widely distributed in the Phil- 
ippines, possibly introduced. Tropical Asia and Africa, through Malaya 
to Australia. 
6. M. umbellata (L.) Hallier f. var. orientalis Hallier f. 
A twining herbaceous vine, more or less pubescent, the stems slender. 
Leaves oblong to oblong-ovate, 8 to 12 em long, acute or acuminate, entire 
or nearly so, base cordate, softly pubescent on both surfaces. Peduncles 
axillary, solitary, shorter than or equaling the petioles, the inflorescence 
cymose, dense, many-flowered. Sepals about 6 mm long. Corolla white, 
tubular-funnel-shaped about 3 cm long, the limb about 2.5 cm in diameter. 
Capsule ovoid, glabrous, about 1 cm long, the seeds covered with spreading 
black or brown hairs. 
In open places, thickets, etc., fl. Dec—March; widely distributed in the 
Philippines, probably introduced. Tropical Asia, Africa, Malaya, and Aus- 
tralia. 
Var. OCCIDENTALIS Hallier f. 
Similar to the above, but flowers yellow. 
Rare in Manila, apparently introduced. Tropical America, introduced 
in Bengal and in the Malay Peninsula. 
11. IPOMOEA Linnaeus 
Twining or prostrate herbaceous vines with alternate, entire, lobed, or 
divided leaves. Flowers axillary, solitary or cymose. Sepals ovate to 
linear, equal or unequal. Corolla usually campanulate, the limb plicate, 
slightly 5-lobed. Stamens 5, included or rarely exserted, the filaments some- 
times dilated at the base. Ovary 2- or 3-celled, rarely 4-celled; ovules 
usually 4. Fruit a 4- to 6-valved capsule, rarely indehiscent. (From the 
Greek “bind-weed” and “like.’’) 
Species about 300, in all tropical countries, about 15 in the Philippines. 
1. Sepals much elongated, the tips oblong to linear-lanceolate, clothed with 
long spreading hairs at the base. 
ye a wate, corm atiefoes 200 5 sal ga ni aha a he Rt SEIN Ln 1. 7. nil 
a yp: taeremneta Na a sie ot a aid ae Rin ops RET esate 2. I. purpurea 
1. Sepals not much elongated, glabrous or hairy, never linear-lanceolate. 
2. Leaves hairy on both surfaces, deeply 5- to 9-lobed; flowers white. 
8. I. pes-tigridis 
2. Leaves glabrous or only slightly hairy. 
3. Leaves deeply 5- to 9-lobed. 
4. Corolla pink-purple, the lobes of the leaves reaching about two- 
VLA bag) (Ra eM ac Say or: 0— Dela BO RS Ree ne i ale eA ep eae 4. I. digitata 
4. Corolla lavender-purple, the lobes of the leaves extending quite 
or nearly to the base........................ wt Set A ice oad Scab aRe § 5. I. cairica 
