A flora of Manila - Rainforestation

ASCLEPIADACEAE 375
cm lonpr, the nerves prominent beneath, joined with the distinct, looped, marginal
nerve. Inflorescence axillary, peduncled, cymose, 6 to 10 cm long.
Flowers white, fragrant. Calyx-lobes lanceolate or oblong-lanceolate,
pointed, about 1 cm long. Corolla white, the tube about 7 mm long, the
lobes spreading, linear, 1.5 to 2 cm long. Follicles very long, slender, pen-
dulous, cylindric, up to 60 cm in length. (Fl. Filip. pi. 1,28, Echites procumbens.)
In thickets, Masambong, fl. June; occasional in the Philippines. India to
Malaya.
13. ICHNOCARPUS R. Brown
Climbing shrubs with ovate, opposite leaves. Flowers numerous, small,
in elongated, terminal and axillary cymes. Calyx 5-cleft. Corolla salvershaped,
throat contracted or villous, the lobes narrowed, obtuse, the upper
half deflexed in bud. Stamens inserted at or below the middle of the tube,
the anthers surrounding and adhering to the stigma. Ovary of 2 distinct
carpels, hairy, many-ovuled, exserted from the disk; style short. Follicles
slender, spreading, cylindric or somewhat compressed. Seeds narrowed
above, the coma deciduous (Greek "vestige" and "fruit," in allusion to the
slender carpels.)
Species 5 or 6, India to Australia, 1 or 2 in the Philippines.
1. I. ovatifolius A. DC. Hinguio (Tag.).
A woody vine 4 m or more in length, glabrous or nearly so. Leaves ovate
to oblong-ovate, 5 to 14 cm long, acuminate, base rounded or acute. Cymes
terminal and axillary, many-flowered, the entire inflorescence 5 to 20 cm
in length. Flowers white, rather crowded, about 6 mm long. Follicles
slender, 5 to 18 cm long, about 3 mm in diameter, densely brown-pubescent.
(Fl. Filip. pi 97, I. frutescens.)
In thickets, occasional, fl. June-Aug. ; widely distributed in the Philippines.
India to Malaya.
117. ASCLEPIADACEAE (Milkweed Family)
Herbs or shrubs, usually twining, with milky juice, the leaves simple,
entire, opposite, rarely alternate or wanting, exstipulate. Inflorescence
various, usually of axillary umbel-like cymes. Flowers regular, perfect,
5-merous. Calyx-lobes imbricate. Corolla-lobes valvate or imbricate, the
tube or its throat with a ring of hairs, scales, or processes. Stamens at
the base of the corolla, the filaments united into a short fleshy tube which
encloses the pistil, and usually bearing a series of scales or processes forming
a crown ; anthers crowing the column, connate or free, adnate to the stigma,
the tips often with an inflexed membrane, the pollen forming 1 or 2 granular
or waxy masses in each anther-cell. Ovary superior, of 2 distinct carpels,
enclosed within the staminal column; styles 2, united in the stigma; ovules
few to many. Fruit of 2 follicles, the seeds compressed, usually flat, winged,
and crowned with a terminal coma of long, soft, white hairs.
Genera 257, species about 2,000, in all parts of the world, chiefly tropical,
21 genera and about 100 species in the Philippines.
1. Filaments free, short; pollen of numerous loose granules, each granule
formed of 3 or 4 pollen-grains.
2. Glabrous vines with large purple flowers; cultivated only.
1. Cryptoategia
2. Pubescent vines with minute flowers 2. Streptocaulon