FLORA OF ADEN. 
249 * 
sepals. Corolla-tube 1| — 2 lines long; lobes 3 — 3^ lines long, oblong- 
ovate, acute, bearded along their margins. Outer coronal lobes \ line 
long, subquadrate or oblong, obtuse, truncate or denticulate. Inner 
coronal lobes rarely exceeding 2| lines in length, fleshy, white, lanceo- 
late, attenuate into subulate entire or bifid points, with a spur about 
J line long, arising below the middle of the staminal column. 
Follicles — 2 1 inches long, cvoid, acuminate into a beak, more or 
less echinate, sometimes nearly smooth, minutely tomentose. Seeds ^ 
inch long, J inch broad, nearly flat, ovate, margined, minutely tomentose 
on both sides. 
Locality :• — Little Aden, at the foot of the north-eastern slope of the 
Jebel Muzulghum (Defl.). 
Distribution ; — Central and Southern Arabia, Nubia, Syria, Balu- 
chistan. 
6, Caralluma R. Rr. 
Succulent perennial herbs, branching, leafless. Stems 3 — 6-angled,, 
thick and fleshy, obtusely tubercled or acutely toothed along the angles. 
Flowers in few- or many-flowered fascicles or sessile umbels at the 
base, apex, or along the sides of the stems between the angles, small or 
of moderate size, pedicellate or subsessile. Calyx 5-partite. Corolla 
rotate, broadly cup-shaped or with a distinct campanulate or sub- 
globose tube, 5-lobed ; lobes varying from broadly ovate to linear- 
attenuate, valvate in bud. Corona double, arising from the staminal 
column ; outer corona sometimes annular or cup-shaped, entire, crenulate, 
denticulate, 5 — 10- (rarely 20-) toothed or lobulate, adnate to the 
backs of the inner coronal lobes at their base or connected to them by 
narrow partitions ; sometimes of 5 lobes more or less adnate by their 
margins to the sides or backs of the inner coronal lobes forming 5 small 
pouch-like cavities alternating with the anthers, or spreading, rarely 
quite free to the base, usually more or less bifid, sometimes so deeply that 
the whole corona (inner and outer) appears to consist of 5 trifid lobes ; 
inner coronal lobes incumbent on the backs of the anthers and not 
longer than them, or produced into erect connivent or recurved tips, 
with or without a dorsal tooth or horn near or at their base, where they 
are dorsally connected with the outer corona. Staminal column arising 
from the bottom of the corolla, short ; anthers horizontally indexed or 
ascending, not appendaged. Pollen-masses horizontal or ascending, 
solitary in each anther-cell, pellucid along the inner margin or at 
the apex, attached to the pollen-carriers in pairs by short and rather 
slender caudicles ; pollen-carriers with or without a wing-like expan- 
sion on each side, black or brown. Style not produced beyond the 
anthers, truncate at the apex. 
