Woody plant, apparently rooting on trees or rocks, ab. 2-3 ft. high; branches flexuous. Leaves elliptic, 1 in. long, subsessile. Fl. in radical and axillary dense ovoid white-hairy heads; bracts ⅓ in. long; sepals 5; cor. 2-lipped, ⅓ in. long. Bahr El Ghazal Prov. (Gir). =L. perglabra= _C. B. Clarke._ Glabrous except for margins of floral leaves. Leaves linear, 3-nerved, 3¼ in. long. Fl. in axillary heads. Bahr El Ghazal Prov. (Bongo-land: Ngoli). =L. peniculifera= _S. Moore._ Stout woody plant. Leaves linear, 1¼ in. long, tips acute, with long white hairs. Spikes compound, 2 in. long, one-sided, 1 to 2 together; bracts dense, leathery, ovate mucronate; sep. 5, ⅓ in. long, hairy and leathery; cor. ⅔ in. long; st. 4. Bahr El Ghazal Prov. (Mittu-land: Reggo). =L. Medusæ= _S. Moore._ Stout villous plant. Leaves 4 in. by ½ in., 5-nerved. Spikes unilateral, compound, 1-2 together in upper axils, 1½ in. long; bracts ovate with long deflexed white hairy tails; sepals 5, also with ⅓ in. long tails; cor. ⅔ in. long. Bahr El Ghazal Prov. (Bongo-land: Ngoli). =L. laguroidea= _T. Anders._ Woody plant; young parts minutely pubescent. Leaves ovate to narrow- elliptic, 2 in. long, narrowed both ends. Spikes terminal, 2 in. long, not imbricate; bracts lin.-lanceolate; cor. ⅓ in. long. Bahr El Ghazal Prov. (Mittu-land: Mvolo). 684 =Justicia Betonica= _Linn._ Shrubby, nearly glabrous herb. Leaves ovate, acuminate to both ends, 3 in. long. Spikes imbricate, 4½ in. long; bracts somewhat 4-ranked, ovate, ⅓ in. long, white with green nerves; bracteoles similar, smaller; cor. white, rose-spotted, ½ in. long, 2-lipped; st. 2, one anther cell below the other, long-tailed. Caps. ½ in. long, hairy; seeds 4, rugose. Kordofan Prov. =J. betonicoides= _C. B. Clarke._ As above, but leaves subsessile, oblong or lanceolate, hairy beneath and on nerves above. Bahr El Ghazal Prov. (Jur: Jur Ghattas, Mittu- & Bongo-lands). =J. flava= _Vahl._ MAHBAB (White Nile Prov.)—Arab. Hairy herb, 2-4 ft. high. Leaves ovate-lanceolate, up to 3 in. long, both surfaces hairy; pet. ⅔ in. long. Spikes terminal, 4-8 in. long, sometimes interrupted at base; bracts ab. ½ in. long, lanceolate, containing 1-3 fl., green, hairy; bracteoles similar but smaller; sep. 5, small, hairy; cor. yellow; st. 2, one anther cell below the other, tailed. Caps. ⅓ in. long; seeds 4, shortly hairy. Red Sea Prov. (Khor Tamanib, Suakin & Erkowit); Fung Prov. (Saoleil); White Nile Prov.; Upper White Nile Prov. (Meshra El Zeraf, Sobat: mouth of Khor Filus). =J. palustris= _T. Anders._ Leaves oblong tapering to both ends, 6½ in. long; pet. short, otherwise much as above. Kassala Prov. (Gallabat: Matamma); White Nile Prov. (Jebel Arashkol); Kordofan Prov. =J. insularis= _T. Anders._