304 ^ FLORA OF MANILA 



1. CARDIOSPERMUM Linnaeus 



Climbing, tendril-bearing, slender, herbaceous vines. Leaves alternate, 

 exstipulate, biternate, the leaflets very coarsely toothed or lobed. Inflores- 

 cence of axillary, solitary, few-flowered, long-peduncled cymes or racemes, 

 the lowest pair of pedicels developed into spiral tendrils. Flowers small, 

 irregular, polygamo-dioecious. Sepals 4, concave, the two outer ones small. 

 Petals 4, the two larger ones usually adhering to the sepals, and with an 

 emafginate scale above the base, the two smaller ones distant from the 

 stamens. Stamens 8, excentric; filaments free or connate at the base. 

 Ovary 3-celled; style trifid; ovules solitary. Capsule inflated, loculicidal, 

 3-celled, 3-valved, the valves thin, veiny. Seeds globose, arillate at the 

 base. (Greek "heart" and "seed.") 



Species 11, mostly in tropical America and Africa, 1 in the Philippines. 



1. C. HALICACABUM Lu Balloon Vine. 



A slender herbaceous vine 1 to 3 m in length, more or less pubescent, 

 the stems prominently furrowed. Leaves 5 to 9 cm long, deltoid in outline, 

 the leaflets ovate to lanceolate, acuminate, coarsely dentate or lobed, 1 to 6 

 cm long, membranaceous. Flowers small, white, about 2.5 mm long. Fruit 

 obovoid, 1.5 to 2.5 cm long, somewhat triangular and 3-keeled,. apex sub- 

 truncate. Seeds globose, black, with a prominent, white, heart-shaped aril 

 at the base. 



Occasionally cultivated, also sometimes found in thickets, &. Ang.-Jan.; 

 widely distributed in the Philippines, certainly introduced. Most tropical 

 countries, probably a native of India. 



2. ALLOPHYLUS Linnaeus 



Shrubs or small trees with 1- to 5-foliolate, exstipplate leaves, the leaf- 

 lets entire or toothed, Inflorescence axillary, of simple or branched racemes. 

 Flowers small, 4-merous, polygamo-dioecious, globose, greenish or yellowish- 

 white, their pedicels short. Sepals 4, in opposite pairs, hooded, thin, 

 imbricate, the two outer ones smaller than the inner pair. Petals 5, 

 the place of the flfth vacant, small, sometimes declinate, rarely obsolete, 

 naked or supplied with a shaggy scale above the claw. Disk one-sided, 

 usually with four glands opposite the petals. Stamens 8, on the receptacle 

 inside the disk. Ovary usually 2-lobed, 2-celled; ovules solitary. Fruit 

 indehiscent, usually fleshy, of 2 or 3 globose or obovoid, indehiscent, cocci, 

 the cocci drupe-like, seeds with a short thin or fleshy aril (Greek "another" 

 and "tribe.") 



Species 156, in all tropica? countries, about 17 in the Philippines. 



1. A. dimorphus Radlk. 



An erect shrub 2 to 5 m high the younger parts and leaves softly pubes- 

 cent. Leaves 3- and 5-foliolate on the same plants, elliptic or oblong-lan- 

 ceolate to ovate-lanceolate or lanceolate, acuminate, base narrowed, margins 

 coarsely and irregularly serrate, the larger ones up to 12 cm in length, 

 stalked, the lower two, when present, sessile or subsessile, very much 

 smaller than the other three. Racemes slender, axillary, solitary, pedun- 

 cled, 5 to 18 cm long, many-flowered, pubescent. Flowers about 3 mm in 

 diameter, greenish-white. Fruit a single, obovoid to subglobose indehiscent 

 coccus about 5 mm long, red, with scanty pulp. (Fl. Filip. pi. seo, A. 

 hlancoi.) 



