Small, soft-wooded tree, showing leaf-scars on the stem. Leaves large palmatifid. Fruit of female tree almost sessile on stem close to base of the leaves, the size of a small melon, the orange-yellow pulp of which is eaten. Introduced. Cultivated in gardens. Fruit edible, possesses a digestive principle called Papain, similar to Pepsin, which is marketed as a drug. =CACTACEÆ.= 176 =Opuntia Dillenii= _Haw._ BRITTEIN—Hadendowa. Succulent subarborescent plants with more or less prickly, jointed stems and branches; joints flat, obovate. Flowers from upper edge of joints, yellow, tinged with red, 2-3 in. across. Fruit pyriform, edible when ripe. The Prickly Pear, cultivated and sub-wild. Originally introduced from America. =OCHNACEÆ.= 177 =Ochna Schweinfurthiana= _F. Hoffm._ A tree, 25 ft. high. Leaves oblanceolate, widely emarginate, about 3½ in. long and 1½ in. broad, serrulate, many-nerved; flowers clustered, long-pedicellate; sepals 1 cm. long; fruits 1 cm. long, reticulate. Bahr El Ghazal Prov. (Mittu-land: Deragoh). =O. ardisioides= _Webb._ Small or middle-sized tree, with coriaceous leaves; flowers in twos, on old wood. Style 4-5-fid. Kassala Prov. (Gallabat: Matamma); Fung Prov. (Roseires). =O. leucophlœos= _Hochst._ Tortuous shrub. Leaves coriaceous, closely serrulate, 3-6 in. long. Flowers 3-10 together, on old wood, yellow; anthers dehiscing by pore- like slits. Fung Prov. =O. sp.= Shrub, with dark bark; leafless at time of flowering; flowers white. Bahr El Ghazal Prov. (Between Wau & Deim Zubeir). =O. sp.= Mittu-land (Derago). 178 =Lophira alata= _Banks._ TANGA—Dinka & Jur, ZAWA—Zande. Tree with long, glossy leaves; fruit like a shuttlecock, usually 3-winged. Flowers white or yellow, in terminal pyramidal panicles. Mongalla Prov.; Bahr El Ghazal Prov. (from Wau southwards). The seeds yield an oil which is used in cooking, for hair oil and for making soap. The wood is very hard and heavy (density 1.1), difficult to work. It is dark brown in colour, and is suitable for heavy joinery and sleepers. 179 =Ouratea Arnoldiana= _De Wild_ & _Dur._ _Gomphia Arnoldiana_ DC. Shrub or tree. Leaves oblong-oblanceolate, acutely acuminate, about 6 in. long, 2 in. broad, with very numerous but obscure parallel nerves, minutely and distantly toothed; flowers yellow, few in racemes, shorter than the leaves. Belgian Congo (Niamniam-land: by the Mbrwole River). =O. densiflora= _De Wild_ & _Dur._ _Gomphia densiflora_ DC. Shrub or tree. Leaves oblong-obovate, very shortly acuminate, about 6 in. long, 2½-3 in. broad, rather closely serrulate, with rather distant lateral nerves; flowers in lax panicles longer than the leaves. Bahr El Ghazal Prov. (Niamniam-land: by the Linduku Stream). 180 =Sauvagesia erecta= _Linn._