Slender woody twiner. Leaves very variable from linear-hastate to oval, ¾-3 in. long. Umbels several-flowered, sub-axillary; cor. 2-2½ lines in diam.; corona lobes fleshy, tipped with hairs. Foll. 1, lanceolate, 2-3 in. long. Fung Prov. northwards; Darfur Prov.; Mongalla Prov. (Kenissa). =L. Spartium= _Wight._ MARAKH or MERAKH & ZA’ANSHERAB ELMI (N. Kordn.)—Arab; AGWAIT—Hadendowa. Switch-like, green-stemmed, glaucous shrub, 5-10 ft. high, generally leafless. Umbels subaxillary, flowers developing successively; cor. yellow, 5-lobed, small; corona green, fleshy. Foll. 2, lin.-lanceolate, terete, 3-4 in. long. North Sudan; Red Sea, Kassala & Kordofan Provinces. Yields a valuable fibre but difficult of extraction. Good camel fodder. 461 =Ceropegia nilotica= _Kotschy._ Slender fleshy twiner with tuberous root. Leaves opp., ovate-lanceolate, acuminate, toothed towards apex, 1 in. long. Peduncles lateral, 2 flowered; cor. blackish-purple, yellow in throat, 1½ in. long; tube inflated at base; lobes connate at apex, ¼ in. long; corona double, inner yellowish. Mongalla Prov. (Bari-land, Gondokoro). =C. racemosa= _N.E. Br._ Slender twiner. Leaves opp., lanceolate or oblong-lanceolate, 1-2 in. long. Flowers solitary, ⅓-1 in. apart on racemes, which are 2-4 in. long; cor. tube ¾ in. long, hairy inside; lobes ½ in. long, connate at apex, fringed; corona ciliate, double, 5 outer with 10 teeth ½ in. long. Bahr El Ghazal Prov. (Jur-land: Jur Ghattas). =C. stenantha= _K. Schum._ AKEISH or AGASH (Meshra El Zeraf)—Arab; AKON (Meshra El Zeraf)—Dinka; AGE (Meshra El Zeraf)—Shilluk. Slender twiner. Leaves opp., lanceolate, 1-2½ in. long, ciliolate on margin. Cymes 3-6 fl., umbelled, sublateral; cor. greenish; tube ½ in. inflated below; lobes ½ in. linear, connate at tips; corona double, minute. Upper White Nile Prov. (Meshra El Zeraf); Bahr El Ghazal Prov. (Jur- land, Jur Ghattas). The leaves are acid and can be eaten as spinach. The tuber is said to be a good substitute for a potato. 462 =Brachystelma phyteumoides= _K. Schum._ Dwarf perennial; several stems, ab. 4 in. high, from a thick root stock. Leaves opp. linear, acuminate, ab. 2 in. long, nearly glabrous. Umbel terminal between a pair of leaves; cor. dark purple-brown; tubes short, lobes ¾ in. long; corona included in tube, very short, outer lobes bifid. Foll. fusiform. Bahr El Ghazal Prov. (Jur-land; near Jur Ghattas). 463 =Echidnopsis nubica= _N.E. Br._ Leafless, succulent, obtusely 8-angled plant, angles tesselately divided into obtuse tubercles. Fl. fascicled near tips of the stems; cor. very small, 5-lobed, purple-brown, or purple-brown dotted on green; corona single. Follicles up to 4 in. long and ⅓ in. thick, purplish. Red Sea Prov. (Erkowit, Suakin). 464 =Caralluma longidens= _N.E. Br._