28 2 
FLORA OF ADEN. 
C( Our knowledge of the species of Gistanche leaves much to be de- 
sired, and an examination of the plants in the field is very desirable, par- 
ticularly with respect to their variability.” Stapf, 1. c. p. 464. 
XXXVI.— BIGXOXIACEE. 
Trees, shrubs or woody climbers. Leaves usually opposite, compound;, 
leaflets opposite, rarely simple; stipules 0. 
Flowers bisexual, generally zygomorphic ; calyx free, gamosepalous, 
truncate, split or toothed. Corolla tubular or campanulate, lobes 5, 
imbricate, rarely valvate in bud. Stamens 2 or 4, rarely 5, often a short 
staminode in place of the 5th stamen. Ovary free, supported by an 
annular disk, 2-oelled, ovules ^ on two distinct placentas in each cell, 
attached to the dissepiment ; style filiform, with 2 short stigmatic lobes. 
Fruit often elongated, generally dehiscent, the two valves separating 
from the dissepiment, to which the seeds are attached ; seeds winged, 
albumen 0. 
Genera about 105 ; species about 1,550. 
Distribution : — Throughout the tropics of the whole world, largely 
in tropical America, a few in the warm temperate zones of both 
hemispheres. 
1. Tecoma Juss. 
Shrubs or small trees, erect or scandent. Leaves usually opposite, 
simple or compound. 
Racemes or panicles terminal. Calyx tubular-campanulate, subequally 
5-toothed. Corolla tubular-ventricose, orange or red ; lobes 5, round ;. 
subequal. 
Capsule linear or narrow, loculicidally 2-valved, somewhat compressed 
at right angles to the septun. Seeds thinly discoid ; wing hyaline, 
broad. 
Species about 80. 
Distribution : — Tropics of the whole world, mostly American. 
Tecoma spec.— 
Cultivated at Shaikh O’thman (Defiers) . 
XXXVII. ACAXTHUEE. 
Herbs, shrubs or trees with opposite, usually entire exstipalate leaves^ 
Flowers usually irregular, in cymes, racemes or spikes or solitary ;: 
bracts large or small or absent ; bracteoles usually 2, sometimes more 
under the individual flowers, free or connate into an epicalyx. Calyx 
5 — 4-partite. Corolla bilabiate or subequally 5-lobed ; lobes imbricate or 
