Fleshy root-parasite with spirally arranged scale-like leaves and yellow flowers; st. 4 didynamous; anthers bearded. Red Sea Prov.; Berber Prov. (Atbara); Khartoum, Blue Nile & Fung Provinces. Parasitic on _Capparis decidua_, _Acacia arabica_, _Zizyphus_, etc. 658 =Orobanche cernua= _Loef._ =var. Desertorum= _Beck._ Stout parasitic herb, up to 16 in. high, covered with glandular and cobweb-like pubescence and scaly leaves. Spikes cylindric, many- flowered, 8 in. long; cor. bluish-white, ¾ in. long, 2-lipped, upper 2- and lower 3-lobed. Red Sea Prov. (21° N.L.). =O. ramosa= _Linn._ HALUK—Arab. Slender branched herb, 1 ft. high, glandular-hairy; scales ovate to ovate-lanceolate, ¼-½ in. long. Fl. in spikes; cor. pale-yellow with a blueish limb, ab. ½ in. long, upper lip 2-lobed, lower 3-lobed. Khartoum Prov. (Khartoum). Parasitic on Tomatoes. =LENTIBULARIACEÆ (Bladder-worts).= 659 =Utricularia exilis= _Oliver._ Delicate dwarf herb; stems creeping filiform; leaves narrowly spathulate or ligulate, ¼ in. long, deciduous before flowering, with small bladders attached to stem and leaves, scape 1-2 in. high, 2-3 flowered; cor. white, yellow or purple, 2-lipped, ab. ⅙ in. long; st. 2. Bahr El Ghazal Prov. (Jur Ghattas). =U. Schweinfurthii= _Baker._ Delicate twining annual. Leaves unknown. Scapes filiform, twining, up to 6 in. long; fl. up to 6, distant; cor. pale-purple, 2-lipped, spurred; st. 2. Bahr El Ghazal Prov. (Bongo-land: Gir). =U. subulata= _Linn._ Herb, 3-4 in. high, giving out bladder-bearing runners verticillately from base of scape. Leaves lin.-lanceolate, rosulate at base of scape, ¼ in. long. Scape 1-6 flowered; cor. yellow, ¼ in. long, 2-tipped, spurred; st. 2. Bahr El Ghazal Prov. (Jur Ghattas) (Sub-terrestrial). =U. Thonningii= _Schumach._ Floating aquatic herb, ab. 1 ft. long. Stem slender bearing verticils of bladder-bearing pectinate-filiform leaves and scapes bearing near their base a verticil of up to 6 spindle-shaped floats and above 3 to many flowers. Sepals 2, enlarged in fruit; cor. pinkish, 2-lipped and spurred; st. 2. White Nile Prov. (J. Arashkol, near Abba Island, & Lake Tura Um Kenen); Bahr El Jebel (Sudd); Fung Prov. (Jongol’s Post). =U. stellaris= _Linn. f._ Much like above, but flowers yellow. White Nile Prov. (J. Arashkol & Um Kenen); Upper White Nile Prov. (Tonga); Bahr El Ghazal Prov. (Bongo-land: Gir, & Jur-land: Wau). =U. reflexa= _Oliver._ Floating aquatic herb. Leaves as above but bladders larger (up to ⅙ in. long), up to 8 to a leaf. Scapes without floats, 1-6 in. long, 1-3 flowered; cor. yellow, ⅓ in. long, 2-lipped, spurred. Bahr El Ghazal Prov. (Jur Ghattas & Main River). =U. exoleta= _R. Br._ Small aquatic plant; stems filiform. Leaves with few slender segments or replaced by small bladders. Scapes floatless, 2-3 in. long, 2-3 flowered; cor. yellow, ¼ in. long, 2-lipped and spurred. Caps. globose exceeding calyx.