Adenium. ] APOCYNACEH (Stapf). 513 
XII. ADENIUM, Roem. & Schult. 
Calyx 3-4 lin. long, herbaceous, eglandular within; sepals 5, 
lanceolate or subulate. Corolla funnel-shaped or campanulate from 
a short cylindrie base, with paired, small or obscure scales in the 
mouth; scales more or less confluent at the base and forming 
obtriangular pockets, alternating with the lobes; lobes 5, broad, 
twisted, overlapping to the right. Stamens inserted at the base of 
the widened portion of the corolla-tube; filaments very short; 
anthers conniving in a cone, projecting into the widened part of the 
corolla-tube, lanceolate, with long filiform terminal appendages, 
sagittate ; basal appendages much longer than the polliniferous part, 
distinctly tailed ; foot of the connective channelled and glabrous in 
the upper part, with a projection in the centre and a brush-like 
cushion below, decurrent on the filament and passing into the 
tomentose filamental ridges. Disc 0. Carpels 2, free; style fili- 
form, short ; stigma campanulate, capitate, with a basal rim and a 
minute bifid apiculus, agglutinated to the foot of the connective ; 
ovules very numerous, pluriseriate. Mericarps follicular, divaricate 
or reflexed. Seeds linear-oblong, covered with reversed hairs, with 
a deciduous coma at either end ; endospsrm very thin; cotyledons 
short, convolute’; radicle much longer than the cotyledons. 
Succulent. shrubs, often with swollen stems and fleshy branches. Leaves in 
spirals and terminal fascicles, rather fleshy; axillary stipules 0; axillary glands 
subulate, conspicuous, several in each leaf axil. Cymes few-flowered, terminal, 
subsessile ; flowers pink or purple, showy. 
DistR1B. Species about 12, extending through Tropical Africa to Socotra and 
Arabia, some of them very closely allied. 
The upper wide part of the corolla quite glabrous and 
dark purple within; apical anther-tails short, in- 
cluded... ve ue oie see ae $s 
The upper wide part of the corolla-tube hairy within ; 
apical anther-tails reaching the mouth or exserted : 
Flowers from a bunch of coetaneous, linear-oblong: 
tomentose leaves... we ose vee <i 
Flowers produced before the obovate-cuneate glab- 
rous leaves ... is tes te 
(1) swazicum, 
(2) oleifolium, 
(3) multiflorum, 
oo eoe 
1. A. swazicum (Stapf in Kew Bulletin, 1907, 53) ; ashrub ; stem 
and branches glabrous with the exception of the youngest parts, whitish 
when dry; leaves obovate-cuneate, rounded at the apex, gradually 
narrowed into the basal cuneate portion, 3—4 in. long, ee in. broad, 
somewhat coriaceous, softly whitish-tomentose on both sides when 
young, ultimately more or less glabrescent, glaucous; secondary 
nerves oblique, faint or quite obscure, 11-23 lin. apart ; petiole up to 
13 lin, long; cymes terminal or pseudo-axillary, greyish-tomentose ; 
bracts lanceolate, 22 lin. long; pedicels up to 5 lin. long; calyx 
4 lin. long ; sepals lanceolate, acuminate, pubescent to subtomen- 
tose; corolla pink, purple in the throat; infra-staminal part of the 
tube 4 lin. long, with 5 densely tomentose lines below the stamens, 
glabrous at the base, supra-staminal part about 1 lin. long, wide- 
VOL, 1V.—-SEOT, I,—PART, IV. Ll 
