188 
FLORA OF ADEN. 
Pod oblong or ligulate, flat or turgid, indehiscent or dehiscent, 
smooth or prickty. 
Species about 4(h 
Distribution : — Tropics of both hemispheres. 
1 , Caesalpinia pulcherrima Swartz Obs. p. 166.; Hook. FI. Brit. 
Ind. II, 255. 
Poinciana pulcherrima Linn. Sp. PI. 380 ; Bot. Mag. t. 995. 
Description : — A glabrous shrub or small tree, unarmed or with a few 
weak prickles. Leaves 4-6 inches long ; pinnae 6 — 8 pairs ; leaflets 8 — 12 
pairs, sessile, close, membranous, \ — | inch long, very obtuse. 
Racemes very broad, the lower pedicels 3 — 4 inches long. Calyx 
i — -| inch long, glabrous. Petals round, crisped, reddish-yellow, with a 
very distinct claw, the largest and most showy of all the species. Fila- 
ments bright red, 3 — 4 times the length of the corolla. Pods nearly 
straight, 2 — 3 inches long, f inch broad. 
Locality: — Aden (Lunt). Introduced. 
Distribution: — Home unknown. Has been found, apparently wild, 
by T. H. Aplin, in December 1887, in the Tapel Choung valley, Shan 
States, 1,700 — 5,000 feet. 
Suborder 3. Mimosece. 
Shrubs or trees, rarely herbs. Leaves bipinnate, rarely simply pinnate. 
Flowers small, regular, usually pentamerous, in globose heads or 
cylindric spikes, rarely shortly pedicelled and in slender racemes or 
globose umbels. Sepals usually connate in a 5-dentate or-lobed calyx. 
Petals free or connate, hypogynous or subperigynous, valvate in aestiva- 
tion. Stamens as many or twice as many as petals or indefinite, free or 
monadelphous ; anthers minute, dehiscing longitudinally. Ovary free^ 
in the bottom of the calyx. 
Seeds albuminous or with scanty albumen ; cotyledons flat ; radicle 
straight, shortly exserted or included. 
Distribution : — Tropical and warm regions. 
Stamens indefinite, frea anthers without glands . . . 1. icacia. 
Stamens 10, anthers with deciduous apical glands . . . 2. Prosopis. 
Stamens indefinite, monadelphous ..... 3. Calliandra. 
Nos. 2 and 3 are represented by cultivated species only. 
1. Acacia Willd. 
Trees, shrubs and climbers, armed with stipular, infra stipular or 
scattered spines. Leaves bipinnate, pinnae >nd leaflets opposite. Stipules 
spinescent or inconspicuous, rarely membranous. 
