10 =Clematis inciso-dentata= _Hochst._ SHADDEIP—Hadendowa. Woody climber. Leaves variable, pinnately or ternately divided. Flowers in terminal or axillary panicles. Sepals petaloid, white, hairy inside; petals 0. Fruiting head of silky white achenes. Red Sea Province (Erkowit); Nuba Mountains Prov. (Khor Abu Habl, Dilling). =C. glaucescens= _Fresen._ Weak woody climber. Leaves ternately divided, softly hairy below. Flowers in short terminal and axillary panicles. Sepals very silky. Fruiting heads with silky achenes shortly tailed. Bahr El Ghazal Prov. (Bongo-land: Doguddu & Sabbi). Darfur Prov. (Kulme). =C. cf. C. glaucescens= _Fresen._ As above, but much longer tails to the achenes. =C. simensis= _Fresen._ Woody climber. Leaves pinnatisect; leaflets 1-5, ovate to ovate- lanceolate, crenate-serrate. Panicles many flowered. Flowers white, ¾ in. diam.; sepals short silky within. Carpels hairy; tails 1 in. or more. White Nile Prov.; Darfur Prov. (Kulme & Jebel Marra; up to 9,500 ft.). =C. grata= _Wall._ Climber. Leaves pinnatisect; leaflets 3-7, ovate, rounded or cordate at base, broadly crenate, silky or pubescent beneath. Flowers ¾ in. in diam.; sepals nearly glabrous inside. Red Sea Prov. (Erkowit). 11 =Clematopsis Oliveri= _Hutchinson._ Erect semi-woody plant. Upper leaves usually 3-fol., lower often 1-fol.; leaflets obovate to linear-oblong. Flowers white, solitary; petals 0. Achenes silky with long plumose tails. Mongalla Prov. (Yei River); Bahr El Ghazal Prov. (Niamniam-land). 12 =Ranunculus pubescens= _Thunb._ Herb. Stems erect 1-2 ft. high. Lowest pinnæ usually petiolulate, lobes 3-fid or 3-partite; uppermost leaves sessile, 3-fid or rarely entire. Petals 5, yellow. Darfur Prov. (Jebel Marra, 6,000 to 9,000 ft. Kulme). 13 =Nigella sativa= _Linn._ Erect herb. Sepals petaloid, blue; carpels connected together in the middle, diverging above into 5 points. Darfur Prov. (Melit & Jebel Marra, 6,500 ft.). =CERATOPHYLLACEÆ.= 14 =Ceratophyllum demersum= _Linn._ Sea-weed-like aquatic herb with verticils of 2-fid or dichotomously divided and toothed leaves. Flowers axillary, monœcious, minute. Fung Prov.; White Nile Prov. (several places); Sobat River; Bahr El Jebel (Mouth); Bahr El Ghazal Prov. (above the mouth of the Jur River, etc.). =C. spp.= White Nile Prov.; Sobat River; Bahr El Ghazal Prov.; Bahr El Jebel. =NYMPHÆACEÆ (Water lilies).= 15 =Nymphæa micrantha= _Guill._ & _Perr._ Aquatic herb with broadly ovate sagittate leaves and hairy bulbil at the apex of the petiole. Flowers about 2½ in. long. Bahr El Ghazal Prov. (Bongo-land: Kulongo). =N. nubica= _Lehm._ Aquatic herb with large almost orbicular peltate leaves with undulate margins. Flowers about 4 in. long. Fung Prov.; White Nile Prov. (J. Arashkol). =N. cærulea= _Savign._ SUTEIB—Arab; TWAL—Nuer.