226 LXXXIV. APOCYNACEZ (STAPF). [ Motandra. 
flowering ; calyx 2 lin. long, greenish-brown ; sepals ovate-lanceolate, 
velvety, 1 lin. long. Corolla-tube rufo-tomentose without, 17-2} lin. 
long; lobes ovate, 3 lin. long, yellow, glabrous within, brownish- 
tomentose without. Follicles densely brownish-velvety, acute, 2} in. 
long (immature ?). Seeds 34 mm. long, 1 mm. broad, 
South Central. Congo Free State: Kassai District; Lubue, ZLya, 274, 
287. 
This is stated to yield great qv tities of a white latex which coagulates in very 
elastic masses. 
Imperfectly known species. 
4. M. rostrata, K. Schum. in Schlechter, Westafrik. Kautschuk- 
Exped. 307. A liane with white flowers. Perhaps identical with 
AJ. guineensis. 
Upper Guinea. Lagos: Ishagamo, Schlechter, 12312. 
42. ADENIUM, Roem. & Schult. ; Benth. et Hook. f. Gen. Pl. ii. 722. 
Calyx 3-4 lin. long, herbaceous, eglandular within; sepals 9, 
lanceolate or subulate. Corolla funnel-shaped or campanulate from a 
short cylindric 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 muc 
longer than the polliniferous part, distinctly tailed ; foot of the con- 
nective channelled and glabrous in the upper part, with a projection 1D 
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 filiform, short; stigma campanulate, capitate, with a basal 
rim and a minute bifid apiculus, agglutinated to the foot of the con- 
nective; ovules very numerous, pluriseriate. Mericarps follicular, 
divaricate or reflexed. Seeds linear-oblong, covered with reversed hairs, 
with a deciduous coma at either end; endosperm very thin; coty- 
ledons 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. Cymé 
few-flowered, terminal, subsessile ; flowers pink or purple, showy. 
About 12 species; 6 in tropical Africa, 2 in South Africa, 1 in Socotra, and 3-4 
in Arabia, some of them very closely allied. 
Widened part of the corolla-tube glabrous within ; apical 
anther-tails reaching slightly beyond the middle of 
the corolla-tube . : . ° : : . 1. A. boehmianum. 
