746 Asclepiadaceae. 
in a corymb-like raceme, which (including the peduncle) is 2—5 em 
long, tomentose or shortly and softly hairy, as are also the 7/, to 
lin. long pedicels, and the 2—5 mm long ovate acute sepals. 
Corolla-tube 2'/,—5 mm long; lobes 6—6'/, mm long, oblong- 
ovate, acute, bearded along their margins. Outer coronal-lobes 1 mm 
long, subquadrate or oblong, obtuse, truncate or denticulate; inner 
coronal-lobes 5'/,—-8 mm long, fleshy, white, lanceolate, attenuate 
into subulate entire or bifid points, rising much above the staminal- 
column and incurved over it, and with an acute spur about 2 mm 
long, arising below the middle (1—1,75 mm above the base) of the 
staminal-column. Follicles 21/,—5*/, cm long, ovoid, acuminate 
into a beak, more or less echinate, sometimes nearly smooth, 
minutely tomentose. Seeds 8 mm long, 5 mm broad, nearly flat, 
ovate, margined, minutely tomentose on both sides. — Flow. December 
to April. 
D. 1. D. i. D. a. sept. D. a. mer. Common in deep sandy places, 
rarely on rocky calearious ground. 
Local name: \ebur-el-homara (Delile); satme (Klunzinger); 
generally: ghalqa;  ghalqai. 
Also known from Moroeco, Algeria, Tunisia, Tripolitania, Fezzan, Nubia, 
Abyssinia, Arabia and Persia. 
426. (4.) Cynanchum Linn. 
Calyx 5-partite. Corolla very deeply 5-lobed, rotate or rotate- 
campanulate; lobes overlapping to the left and straight or more or 
less twisted in bud. Corona arising from the staminal-column near 
or at its base, often membranous, annular, cup-shaped or tubular, 
toothed or lobed at the top or divided nearly or quite to the base 
into 5 entire or toothed lobes, with or without a tooth, lobe, thicke- 
ning or keels within the tube in front of each of the principal teeth 
or lobes, or on the inner face or at the base of the lobes when the 
corona is divided. Staminal-column arising at or near the base of 
the corolla; filament part varying from almost none to a long slender 
stipe within the corona; anther-appendages membranous or slightly 
fleshy, inflexed over the apex of the style or connivent or erect 
around it. Pollenmasses pendulous, solitary in each anther-cell, 
affixed in pairs by short or long caudicles to the pollen-carriers. 
Style shorter or longer than the anther-appendages; apical part 
truncate, conical, or rostrate. Follicles smooth, winged, or setose. 
Seeds crowned with a tuft of hairs. — Stem twining or erect, leafy, 
rarely leafless, fleshy. Leaves opposite. Flowers: rather small, in 
sessile or pedunculate corymbs, racemes or umbel-like or corym- 
