386 A FLORA OF MANILA 
suborbicular, about 1.5 em long, enlarged in fruit. Corolla widely funnel- 
shaped, rose-purple, 7 to 8 cm long, 5 to 6 cm in diameter. Fruit completely 
surrounded by the enlarged sepals, including the sepals 3.5 to 5 cm long, 
the capsule ovoid, 1.5 to 2 cm long. 
In thickets, Pasay, fl. Oct.-Dec.; widely distributed in the Philippines. 
India to Malaya, elsewhere often cultivated. 
7. ARGYREIA Loureiro 
Large, twining, shrubby vines, the leaves lanceolate to cordate-ovate, 
white-silky-pubescent, at least on the lower surface. Flowers axillary, 
usually in many-flowered cymes, the bracts large. Sepals 5, thin in flower, 
in fruit thickened, often reddish inside. Corolla funnel-shaped or cam- 
panulate, pink or pale-purple, usually hirsute externally, the limb plicate, 
shortly 5-lobed. Stamens 5, included. Ovary 4-celled, 4-ovuled; style fili- 
form. Fruit a hard dry berry or indehiscent capsule. (Greek “silvery,” 
from the white hairs). 
Species about 30, mostly in the tropics of the Old World, 2 in the Phil- 
ippines. 
Leaves up to 30 cm in length, prominently cordate.................... 1. A. nervosa 
Leaves 15 cm long or less, obtuse or acute at the base................ 2. A. mollis 
*1. A. NERVOSA (Burm.) Boj. (A. speciosa Sweet). 
A coarse, twining, perennial, woody vine, the stems often 5 cm or more 
in diameter, reaching a length of 15 m or more. Leaves broadly ovate, 
entire, acuminate, base prominently cordate, 12 to 30 cm long, the upper 
surface glabrous, the lower surface densely and softly pubescent with 
grayish or whitish hairs, as are the branchlets, petioles, and inflorescence. 
Peduncles axillary, stout, up to 30 cm in length, the flowers crowded at the 
ends, subtended by large, thin, deciduous bracts. Calyx ovoid, about 1.5 
em long. Corolla 6 to 7 cm long, the tube at first slender, then abruptly in- 
flated, somewhat tubular, and 2 to 2.5 cm in diameter, the limb somewhat 
spreading, about 6 cm in diameter, externally pubescent and pale-lilac, 
internally rather deep-purple. Fruit subglobose, brown, about 1.5 cm in 
diameter. 
Quite commonly cultivated, fl. June-Dec. Introduced in about the year 
1903; a native of British India. 
2. A. mollis (Burm.) Choisy. (A. nitida Choisy). 
A scandent, twining, somewhat woody vine reaching a height of at least 
10 m, all parts pubescent. Leaves ovate to oblong-ovate, acute, 8 to 15 
cm long, densely white-pubescent and shining beneath. Peduncles axillary 
and terminal, short, 1- to 4-flowered, the outer 3 sepals pubescent, green, 
oblong, 1.5 cm long, the inner 2 shorter. Corolla campanulate, pubescent 
and whitish or pale-purplish externally, the limb purple, about 6 cm long, 
4 cm wide. Fruit depressed-globose, about 1 cm in diameter, surrounded 
by the enlarged sepals. (FI. Filip. pl. 412, A. nitida.) 
In thickets, Caloocan to Masambong, occasional, fil. Oct._Dec.; widely 
distributed in the Philippines. Malaya. 
8. RIVEA Choisy 
Twining shrubs with ovate-cordate, glabrous or pubescent, entire leaves. 
Peduncles axillary, solitary, 1- to 5-flowered, sometimes arranged in leafy 
