Shrub, often scandent. Leaves opp., oval, acuminate, 2-6 in. long; stipules short, broad, connate and sheathing. Fl. 1-2 in. long, 3-8 together in terminal heads; cor. white or copper-coloured, 6-lobed. Fr. a succulent syncarpium, 1½ in. in diam., orange-coloured. Belgian Congo (Niamniam-land). 502 =Psychotria sulphurea= _Schwfth._ Puberulous undershrub, 5 ft. high. Leaves ovate or oval, 5-6 in. long; stip. broadly ovate, 3-pointed. Fl. ⅛ in. long, sulphur-coloured, crowded in terminal, simple or branched cymes. Berry 2-lobed, ¼ in. in diam. Bahr El Ghazal Prov. (Bongo & Niamniam lands). =P. cristata= _Hiern._ Shrubby. Leaves oval or elliptical, acuminate, 3-7 in. long, margins revolute. Fl. minute, 5-merous, in dense corymbose cymes; cor. white with yellow throat, lobes keeled and crested on back. Fr. subglobose. Bahr El Ghazal Prov. & Belgian Congo (Niamniam-land). =P. Schweinfurthii= _Hiern._ Shrubby creeping plant. Leaves opp., oval or elliptical. Fl. ¼ in. long, in crowded terminal panicles; cor. funnel-shaped, throat thinly hairy. Fr. subglobose. Bahr El Ghazal Prov. (Niamniam-land). =P. mucronata= _Hiern._ Glabrous undershrub, 3 ft. high. Leaves oval; stip. ovate, longer than the petiole, bifid. Fl. cymose; cor. white, 5-lobed, sweet-scented like the Elder. Fruit subglobose. Bahr El Ghazal Prov. (Jur Ghattas). =P. nubica= _Del._ Glabrous shrub, 7 ft. high. Leaves elliptical, 3 in. long; stip. triangular. Fl. ½ in. long, 5-merous, 3-6 together, in 3-branched terminal cymes. Fruit subglobose. Fung Prov. (Singa). 503 =Geophila uniflora= _Hiern._ Creeping perennial, rooting at the nodes. Leaves reniform, cordate, 1-2 in. long, opposite; stip. ovate or rounded, 1 line long. Fl. solitary, white, ⅓ in. long, bracteate at base; cor. throat densely bearded. Fr. ovoid, ⅙ in. long. Bahr El Ghazal Prov. (Niamniam-land: by the Hoo River). =G. involucrata= _Schwfth._ Creeping puberulous herb. Leaves almost round; stip. semicircular. Fl. enclosed in cup-shaped involucre of oval bracts, white, ⅓ in. long. Fr. fleshy, pea-shaped. Belgian Congo (Niamniam-land). 504 =Cephaëlis suaveolens= _Schwfth._ Undershrub, 3-5 ft. high. Leaves opp., oval; stip. broadly oval, connate at base, bifid, puberulous. Fl. ab. ¼ in. long, 5-merous, white, sweet- scented, crowded in subterminal and axillary, solitary heads, 1 in. in diam., with 4 involucral bracts. Berry oval, 12-grooved. Bahr El Ghazal Prov. (Jur-land: near Okel). 505 =Diodia breviseta= _Benth._ Trailing or scandent herb, with scabrid, quadrangular branches. Leaves opp., elliptical, 1-2 in. long, margins scabrid or serrulate; stipules of 5 bristles arising from a short truncate base. Fl. white, 4-merous, sessile, few or several together, axillary. Fr. dicoccous, ⅙ in. long. Bahr El Ghazal Prov. (Niamniam-land: near the Boddo River). 506 =Gaillonia calycoptera= _Jaub._ & _Spach._