FLORA OF ADEN. 
199 
Fruit ovoid, various in size and texture, smooth or angular or 2-— 5- 
winged, indehiscent, coriaceous. Seed solitary, exalbuminous ; cotyledous 
convolute. 
Species about 135. 
Distribution :■ — Tropics of both worlds. 
1 . Terminalia sp. ex Krause in Engl Bot. Jahrb. XXXV, Heft 
5, p. 47. 
Locality : — Rocky slope of the Shum Shum Range (Ellenbeck). 
“This Terminalia, which has been collected by Ellenbeck only 
and of which we have only a poor specimen, seems to be nearly allied 
to, and perhaps identical with, T. Kelleri Engl, et Diels of Somaliland.” 
Krause. 
XX. — LITHRACEdE. 
Trees, shrubs, or herbs ; branches often 4-gonous, leaves entire, usually 
opposite, sometimes alternate or whorled ; stipules 0. 
Flowers hermaphrodite, usually regular, cymose or paniculate. Calyx 
usually free, persistent ; primary teeth or lobes 3 — 6, with sometimes as 
many accessory teeth added, valvate. Petals as many as the primary 
teeth of the calyx, rarely fewer or 0. Stamens definite or indefinite, 
inserted at various heights on the calyx- tube. Ovary superior (rarely 
inferior), 1 — 6-celled ; ovules many, placentas axile, rarely parietal; style 
usually filiform ; stigma capitate, rarely 2-lobed. 
Fruit capsular or baccate, membranous or coriaceous, girt round 
the base by the calyx or entirely included in it, or rarely surmounted 
by it, 2 — 6-cel led or, by the imperfection of the partitions, 1-celled, 
variously dehiscent, rarely indehiseent. Seeds numerous, sometimes 
winged ; albumen 0 ; embryo usually straight ; cotyledons usually 
oblong or orbicular, flat, 2-auricled at the base and with a short radicle. 
Genera 30; species about 280. 
Distribution : — Chiefly tropical. 
1 . Lawsonia Linn. 
A glabrous shrub ; younger branches sometimes 4-gonous, the 
older terete, often spinescent. Leaves opposite, shortly petiolate, 
ovate-lanceolate, entire. 
Flowers in terminal panicled cymes. Calyx-tube short ; lobes 4, 
spreading, broadly ovate ; accessory teeth 0. Petals 4, very shortly 
clawed, inserted at the base of the calyx-tube in pairs opposite to 
calyx-lobes ; anthers broadly oblong, the connective thick. Ovary 
