Small diffuse viscid-pubescent herb. Leaves ovate or oblong, incised- dentate, pinnatifid or dissected, ¼-1 in. long, lower opp., upper alt. Fl. in upper axils of leaves; calyx 5-partite, minute; cor. ⅙ in. long, white, tube not dilated, lobes small, 2 smaller; st. 4, included; style shortly 2-lobed. Caps. ovoid, minute. Near Wadi Halfa (between Korosko & Derr); Dongola Prov. (Debba); Near Khartoum Prov.; White Nile Prov. (El Ehs). 638 =Lindenbergia abyssinica= _Hochst._ Glandular-pubescent or pilose perennial. Leaves opp. or upper alt., broadly-ovate, cuneate to subcordate, ½ in. long, coarsely crenate- dentate. Fl. in leafy terminal, secund racemes; cor. ⅔ in. long, 2-lipped, postichous lip 2-lobed, antichous 3-lobed. Caps. ovoid, ⅓ in., pubescent. Red Sea Prov. (Suakin, Erkowit, Khor Tamanib, Wadi Omareg). 639 =Stemodia serrata= _Benth._ Small branched viscid glandular-pubescent herb. Leaves opp. or verticillate, rather crowded, oblong or lanceolate, up to 2 in. long, serrate above middle. Fl. crowded in leafy spike-like racemes; bracts 2, near calyx, which is 5-partite, ¼ in. long; cor. bluish, slightly longer than calyx, 2-lipped, upper emarginate, lower shortly 3-lobed. Caps. ¼ in. long, 4-furrowed. Fung Prov. (Fazoghli); White Nile Prov. (J. Arashkol); Nuba Mts. Prov. (J. Kurun); Upper White Nile Prov. (Kaka woodstation). 640 =Limnophila gratioloides= _R. Br._ Marsh herb, usually 5 in. high. Leaves verticillate and opposite, submerged leaves in filiform segments, upper gland-dotted, linear to elliptic-oblong. Fl. axillary on ½ in. long glandular-pubescent pedicels; calyx 5-partite, glandular, small; cor. white, ab. ⅓ in. long; st. 4, each pair or only lower pair of anthers cohering. Caps. minute. White Nile & Upper White Nile Provinces (Debeiker to Hillet Abbas); Bahr El Ghazal Prov. (Jur Ghattas & mouth of Bahr El Arab). 641 =Moniera calycina= _Hiern._ Gland-dotted glabrous herb, 6-12 in. high. Leaves opp., lanceol. to ovate, 1¼ in. long, crenate-serrate, solitary; calyx 5-partite, ¼ in. long, larger in fruit; cor. white, ⅓ in. long, 2-lipped, upper emarginate, lower deeply 3-lobed. Caps. ⅙ in. long, ellipsoid, gland- dotted. Bahr El Ghazal Prov. (Bongo-land: Dukutu). =M. floribunda= _T. Cooke._ Small gland-dotted scabrid herb. Leaves linear to narrowly oblong, ½-2½ in. long. Fl. axillary, solitary or in pairs; calyx 5-partite, ab. ¼ in. long; cor. blue or violet with yellow throat, ⅙ in. long, upper lip emarginate, lower 3-lobed. Caps. ellipsoid, minute. Bahr El Ghazal Prov. (Jur Ghattas & Gir in Bongo-land); Mongalla Prov. (Gameiza woodstation). =M. punctata= _Skan._ Small glandular-punctate herb; stem quadrangular. Leaves linear or lin.-lanceolate, sessile, ab. 1 in. long. Fl. axillary, solitary, subsessile; calyx under ¼ in. long; cor. ⅙ in. long, shape as above. Caps. globose, minute. Bahr El Ghazal Prov. (Jur Aggada & Jur Ghattas). 642 =Dopatrium luteum= _Engl._