582 XCVIII. EUPHOEBIACE.E [Agrostistachys 



resinous, 1. crowded at the ends of branches, oblanceolate, nearly sessile, quite entire, 

 6-20 in. long, racemes stiff, shorter than 1., bracts distant, S fl. clustered, ? solitary 

 in the axils of bracts. 



Sumbavia macrophylla, Muell. Arg. Darrang district, Assam (D. B. March 1879). 

 Upper Burma (Griffith, March, 1837). Eastern slopes of the Pegu Yoma. Martaban 

 and Tenasserim, frequent along streams (Kurz). A small evergreen tree, branchlets, 

 petioles and underside of 1. with a dense white or grey tomentum of stellate hairs, buds 

 and racemes rusty tomentose. L. narrowly peltate, edge undulate, ovate or elliptic, 

 acuminate, blade 8-12, pet. 2-4 in. long, sec. n. 8-10 pair, prominent beneath, the 

 lowest pair from the insertion of the pet., transverse veins parallel. Fl. in androgy- 

 nous axillary bracteate racemes, 6 clustered, nearly sessile, $ pedicelled. £ ■ globose, 

 splitting into 5 valvate sepals, petals conspicuous, stamens 8, on a central convex 

 hairy receptacle. Capsule tricoccous. 



Maninot Glaziovii, Muell. Arg. Ceara Rubber. Indigenous in the Province Ceara 

 of Brazil 4° S. L. Cultivated in Ceylon, Pegu and other tropical countries. A middle- 

 sized tree, 1. nearly glabrous, narrowly peltate, blade 6-10 in. diam., palmately deeply 

 cut into 3-7 elliptic- or obovate-oblong acute segments, pet. 2-6 in. long. Fl. large, on 

 terminal panicles in the forks of branches, the 6 above, the ? below, calyx campanu- 

 late, outside greyish-white with a purplish tinge, internally pale dull purple, stamens 

 10, 5 longer, 5 shorter, between the lobes of a large bright yellow disk. Capsule 

 pendulous about 1 in. diam. with 6 shallow grooves, seeds polished, greyish-brown, 

 mottled with purplish-black, testa very hard and thick. 2. M. utilissima, Pohl, a native 

 of South America, cultivated in India and Burma, the root yields Cassava starch and 

 Tapioca meal. 



Hevea brasiliensis, Muell. Arg. Province of Para on the Amazon river, cultivated at 

 Mergui. A large evergreen tree, 1. glabrous, trifoliolate on long petioles, leaflets 

 entire, acuminate. Fl. monoecious, in large whitish pubescent lateral panicles. Calyx 

 campanulate, 5-6-lobed, petals 0, anthers adnate to a central column. Fr. a large 3- 

 lobed, 6-valved capsule having the appearance of 3 connate cylinders, rounded at the 

 ends. Seeds shining, spotted. This and other closely allied species yield the Para 

 rubber, the finest and most durable caoutchouc known. 



28. GELONIUM, Eoxb. ; Fl. Brit. Ind. v. 458. 



Evergreen, glabrous resinous shrubs or small trees. L. usuall}- alternate, 

 stipules sheathing, caducous, bearing a raised line at the nodes. El. dioecious, 

 apetalous, in leaf-opposed corymbs or clusters, sepals 5 or 6, imbricate. $ : 

 stamens 10-60, crowded on a convex receptacle, filaments free, anther-cells 

 parallel, pistillode 0. 9 : disk cupular, sometimes bearing stamincdes, ovary 

 2-4-celled, styles minute, bifid or semi-lunate, 1 ovule in each cell. Fr. 

 tardily dehiscent, pericarp often fleshy, the valves separating from a persistent 

 axis. Seeds arillate. Species 15, tropical Asia and Africa. 



1. G. lanceolatum, Willd. ; Wight Ic. t. 1867. Vern. Yelidaba, Yelladabba, Tel. 

 Hills and dry evergreen forests on the east side of the Peninsula. Anama!ais, Cochin, 

 Travancore. A small or middle-sized tree, 1. coriaceous, often spinulose-serrate, 

 elliptic or elliptic-lanceolate, blade 3-5, narrowed into pet. £-J in. Fl. £ ^-J in. 

 across, mostly on short racemes with a woody rachis, marked by the scars of the 

 bracts. Capsule tricoccous, J-A in. diam., cocci keeled. 2. G. multiflorum, A. Juss. — 

 Syn. G-fasciculatum, Eoxb.; Bot. Mag. t. 3231. Ban Narinya, Hind. ; Sethanbaya, 

 Burm. Bengal, to the foot of the hills. Chutia TNTagpur. Orissa. Northern Circars. 

 Chittagong.* Lower Burma. Andamans. — Malay Penins. and Archip. A middle- 

 sized tree, 1. coriaceous, entire, elongate-elliptic, blade 6-9, narrowed into pet. J-J in. 

 Fl. £ yellow, very fragrant, i in. across, in pedunculate 1 corymbs, pedicels J-J in. 

 Stamens 40-60. Fr. globose, obscurely 3-lobed, ^-f in. diam., pericarp thick fleshy; 

 rough when dry. 3. G. bifarium, Eoxb. Andamans (Kurz). Pegu (D. B. 1858). — 

 Malay Penins. and Archip. Fl. s J-J in. across, in sessile fascicles, capsule J in. 

 diam. deeply 2- (rarely 3-) lobed. 



Chaetocarpus castanocarpus, Thwaites ; Bedd. Fl. Sylv. t. 284. Vern. Bidhokra, Beng. 

 Silhet. Chittagong. Andamans. Lower Burma. Malay Penins. Ceylon. An ever- 

 green middle-sized tree, 1. coriaceous, alternate, quite entire, penninerved, ovate or 

 elongate-elliptic, blade 4-8, pet. J-J in. long. Fl. J in. diam., dioecious, apetalous, in 

 axillary clusters, sepals 4 imbricate in pairs, hairy outside, disk lobed. i : stamens 8 

 lower portion of filaments combined into a slender column. Capsule j-1 in. long, 

 densely clothed with tawny, stiff bristles. 



