Perennial herb with long creeping or underground stems. Leaves trifoliolate. Flowers yellow, 1-3 in umbels on axillary peduncles exceeding the leaves. Red Sea Prov. (Erkowit); Bahr El Ghazal Prov. (Niamniam-land: by the Nabambisso); Darfur Prov. (J. Marra: Niurnya 7,000 ft.). 125 =Biophytum Apodiscias= _Turcz._ Annual; leaves abruptly pinnate, crowded at nodes and ends of stem and branches, sensitive. Flowers, yellow or red, in umbels on axillary peduncles, with numerous setaceous bracts. Styles 5. Fruit a 5-celled capsule. White Nile Prov.; Bahr El Ghazal Prov. (Jur Ghattas). =BALSAMINACEÆ.= 126 =Impatiens niamniamensis= _Gilg._ Herb 1 ft. high. Leaves ovate-lanceolate deeply crenate, about 6 in. long. Flowers with the upper petal green, the spur dull purple. Belgian Congo (Niamniam-land: by the Assika River). =I. Irvingii= _Hook. f._ Succulent herb, 2-4 ft. high. Leaves usually alternate, lanceolate, serrulate, 3-5 in. long. Flowers red, solitary or in pairs, irregular, the spur of calyx much longer than the body of the lip. Capsule short, elastically splitting into 5-valves. Belgian Congo (Niamniam-land: by the Mbrwole & Yuru Rivers). =LYTHRACEÆ.= 127 =Rotala verticillaris= _Linn._ Herb, often procumbent. Leaves in whorls of 4-8, narrow linear, truncate or bifid at apex. Flowers sessile, whorled, small. Bahr El Ghazal Prov. (Jur Ghattas). =R. serpiculoides= _Welw._ Marsh herb, 1-3 in. high. Leaves opposite, linear, ab. 1 in. long. Flowers 1-4 together; calyx 4 deltoid lobes, reddish; petals rare, reddish; stamens 1-2: capsules 3-valved, reddish. Bahr El Ghazal Prov. (Jur-land). =R. decussata= _Hiern._ Marsh herb, 1-9 in. high. Leaves decussate, oblong, ½ in. long. Flowers sessile, solitary; calyx 4-lobed; petals 4 or 0; capsule 3-valved. Bahr El Ghazal Prov. (Mittu-land; between Ngama & Dokuttu). =R. stagnina= _Hiern._ Erect marsh herb 4 in. high. Leaves opposite, ovate-oblong, 2 in. long. Flowers 4-merous, sessile; petals 0 or caducous; stamens 2; capsules 3-valved. Bahr El Ghazal Prov. (Bongo-land: Gir). =R. tenella= _Schwfth._ Creeping marsh herb. Leaves sessile, amplexicaul. Flowers minute, white; capsule globose, 4-valved. Bahr El Ghazal Prov. (Jur Ghattas & Bongo-land: Gir). 128 =Woodfordia floribunda= _Salisb._ Shrub with spreading branches. Leaves opposite, sometimes in whorls of 3, sessile, ovate-lanceolate, cordate or rounded at base. Flowers in axillary clusters; calyx tubular, scarlet; petals minute. Fung Prov. (Fazoghli); Nuba Mts. Prov. (Khor Mashisha, near Dilling); Darfur Prov. (Jebel Marra, 5-6,500 ft.). It exudes a gum said to be like Gum Tragacanth. The flowers are used as a dye. Both flowers and leaves contain tannin. 129 =Nesæa heptamera= _Hiern._ Small herb with red heptamerous, minute flowers. Leaves opposite, linear-lanceolate, about 1 in. long. Bahr El Ghazal Prov. (near Pongo River).