754 Asclepiadaceae. 
D. i. Wady-el-Hagg; dersert-et-Tih. — D. a. sept. In the Wadies 
often in shaded situations. 
Local name: herdjel (Schimper); ghalqet-ed-dile (Wilkinson); 
gheyl (Schweinfurth). 
Also known from Arabia Petraea and Palestine. 
1055. (3.) Asclepias curassavica L. Spec. Plant. I (1753), 
p. 215. -—— Bot. Reg. I, tab.81. — Decgne. in DC. Prodrom. VIII, 
p. 566. — Stems 60cm to 1m high, glabrous. Leaves spreading; 
petiole 1—2,5 cm long; blade 51/,—10'/, em long, 1—2?/, cm 
broad, lanceolate, acuminate, cuneate-acute at the base, glabrous. 
Umbels lateral and terminal, pedunculate, 6—12-flowered; peduncles 
2—6 cm long, puberulous; pedicels 1—1,5 cm long, more or less 
puberulous. Sepals 5 mm long, lanceolate, acute, reflexed, puberulous. 
Corolla reflexed, scarlet-red; lobes 5*/,—6 mm long, 27/, em broad, 
oblong, acute, glabrous. Coronal-lobes arising 2 mm above the base 
of the staminal-column and overtopping it by about 1/, of their 
length, 21/,—5 mm long, complicate, obliquely truncate, with a 
horn arising from the base within, protruding for half its length, 
and curved forward over the top of the staminal-column, yellow. 
Anther-appendages orbicular inflexed over the apex of the style. 
Follicles mostly solitary, 6—6'/, em long, about 10 mm_ thick, 
lanceolate, acuminate into a beak, and tapering into a stipe at the 
base, smooth, glabrous. Seeds 6 mm long, 5 mm broad, elliptic, 
plano-convex, with a broad thin margin, minutely tuberculate-lineate, 
dark brown. — Flow. March to April. 
N. d. often cultivated in gardens and naturalized. 
Local name: ?arjel. 
A native of Tropical America, now widely spread in the Tropics. 
431. (9) Leptadenia R. Br. 
Calyx 5-lobed to the middle or nearly to the base. Corolla 
deeply 5-lobed, rotate or with a very short campanulate tube and 
spreading lobes, valvate in bud, pubescent or bearded within. Corona 
of 5 short, transverse or rounded, fleshy lobes, tipped with a tuft 
of hairs, or with a subulate hairy point, inserted at the sinuses of 
the corolla. Staminal-column arising from the bottom of the corolla, 
sometimes with a slightly prominent inconspicuous undulate fleshy 
ring at the base; anthers incumbent on the top of the style, sub- 
horizontal or suberect, without an appendage. Pollen-masses sub- 
horizontal or suberect, solitary in each anther-cell, pellucid at the 
apex, attached in pairs by short caudicles to the pollen-carriers. 
Follicles smooth. Seeds crowned with a tuft of hairs. — Shrubs, 
