396 CXXXV. EUPHORBIACEEH. (J. D. Hooker.) [ Trigonostemon. 
Stamens 3 or 5; anthers sessile, or filaments united in a column with free 
spreading tips; anthers erect or horizontal, cells united by their bases, each 
cell with an often thick crested connective, extrorse. Pistillode 0. FEM. FL. 
Perianth of the male, or petals 0. Disk usually entire. Ovary 3-celled ; 
styles 2-fid or twice 2-fid, rarely entire; ovules 1 in each cell. Capsule of 3 
2-valved cocci. Seeds ovoid or globose, testa crustaceous, albumen fleshy ; 
cotyledons broad, flat.—Species 15 or more, Indian and Malayan. 
The following sections are those proposed in Genera Plantarum, iii. 298. They are 
not natural, the species with long petioles thickened at the tip differing in habit from 
the rest, and resembling Ostodes. Sect. Pycnanthera appears generically distinct, but 
I should hesitate to separate it before having studied the whole genus thoroughly. 
(Under Trigonostemon in Gen. Plant. l.c. for Cheilosiopsis read Cheilosopsis, and 
for Antitazis read Anisotawis.)—Wall. Cat. 8018, from Penang, is possibly a Trigo- 
nostemon, but is in too imperfect a state for determination." 
Sect. I. Eutriconostemoy. Racemes axillary. Anthers 3, on a column, 
erect or horizontal, 2-partite ; cells connected at the base only. 
1. T. longifolius, Baill. Etudes Gen. Euphorb. 341, t. 11, f. 12; 
leaves subsessile 8-18 in. oblanceolate acuminate, panicles or racemes 
axillary long spiciform hispid and pubescent, capsule hispid, styles shortly 
2.obed. Muell. Arg. in DC. Prodr. xv. ii. 1108; Kurz For. FI. ii. 406. 
Croton longifolius, Wall. Cat. 7717. ? Athroisma dentatum, Griff. Wotul. 
iv. 478, and Ic. Plant. Asiat. t. 585, f. 4. 
From TENASSERIM and PENANG to SINGAPORE, Wallich, &c. 
A small tree or shrub; shoots with golden hairs. Leaves 2—4 in. broad, narrowed 
into the very short petiole; nerves 15-20 pair, very slender, margin entire or with 
few distant glandular teeth. Racemes rigid, rachisangled; bractssubulate. Male fl. 
about } in. diam, ; sepals broad, hispid, one much the largest; petals obovate-oblong, 
red; anther-cells acute, connective hardly thickened. Capsule 4 in. diam., equalling 
the stout pedicel, tridymous, densely hispid. Seeds minute.— The Tenasserim speci- 
mens have the broadest leaves, and those of one of Wallich’s specimens are rounde 
at the narrow base, with a short distinct petiole. 
2. T. heteranthus, Wight Ic. t. 1890; glabrous, leaves very long- 
petioled 5-10 in. elliptic-lanceolate caudate-acuminate entire or serrate, 
panicles axillary very slender, pedicels capillary, styles shortly 2-lobed, 
capsule glabrous. Muell. Arg. in DC. Prodr. xv. ii. 1109; Kurz For. FI. 
1.206. è Athroisma serratum, Grif. Notul. iv. 477, and Ic. Plant. Asiat. 
. , 1. 9. 
TENASSERIM ; at Mergui, Griffi/h. 
Shrubby or arboreous (a tree 28 ft., Griffith); shoots tawny-pubescent. Leaves 
2-34 in. broad, membranous, base acute 2-glandular, teeth gland-tipped; nerves 
10-15 pair, slender, arched; petiole 1-5 in., very slender, tip swollen. Panicles 
9-6 in.; bracts minute; pedicels simple and branched. Male fl. j in. diam. ; sepals 
rounded, unequal, membranous, ciliate; petals twice as long, rounded ; disk-glands 
large, ascending; staminal column stout; anthers 3, forming a star of 6 obtuse 
points, each being horseshoe-shaped with a cell on each arm opening downwards. 
Sepals of fem. fl. ovate, gland-ciliate; petals as long; disk of the male; ovary 
glabrous. Capsule 4 in. diam., tridymous, crustaceous, glabrous. Seeds sub- 
globose, pale. 
3. T. malaccanus, Muell. Arg. in Flora (1864) 482, and 1n DC. 
Prodr. xv. ii. 1110; glabrous, leaves long-petioled 3-12 in. lanceolate long- 
acuminate entire or crenate-serrate, racemes or spikes axillary very ong 
slender puberulous, ovary silky, styles 2-partite. 
