Vapacw. | CXXII. EUPHORBIACEA (HUTCHINSON). 639 
Upper Guinea. Cameroons: Preuss, 1171! Rudatis, 23. Bipinde, Zenker, 
3007! Lolodorf, Staudt, 275 ! 
8. U. Heudelotii, Baill. Adansonia, i. 81. A tree up to 60 ft. 
high; branchlets sulcate, glabrous. Leaves oblong - oblanceolate, 
rounded or very obtusely pointed, acutely cuneate to the base, 24-6 in. 
long, 13-23 in. broad, somewhat coriaceous, margins slightly undulate, 
glabrous and dull on both surfaces; lateral nerves 10-15 on each side, 
looped some distance from the margin, raised on the lower surface ; 
tertiary nerves reticulate, lax, distinct below ; petiole slender, 4-14 in. 
long, often suleate, glabrous. Male tlower-heads crowded at the ends of 
the branchlets, solitary ; peduncles glabrous. 4-3 in. long. Bracts of 
the involucre elliptic or obovate, up to 4 lin. long and 2 lin. broad, 
membranous, glabrous. Calyx deeply lobed, glabrous ; lobes unequal. 
Stamens 5; filaments glabrous. Rudimentary ovary columnar, 
truncate, erect, glabrous. Female flowers axillary or arising above 
the axils, mostly solitary, pedunculate; peduncles thick, terete, } in. 
long. Involucre 5—6-partite, lobes caducous. Ovary 2—4-celled. Fruit 
ellipsoid, acute, glabrous, crowned by the slender persistent styles— 
Mill. Arg. in DC. Prody xv. ii. 490; Pax in Engl. Jahrb. xxxiv. 371; 
De Wild. Miss, E. Laurent, i. 128. 0. Marquesii, Pax in Engl. Jahrb. 
XX. 522, xxxiv. 371. 
_ Upper Guinea. Senegambia, Heudelot, 836! Sierra Leone: by Kabele River, 
Ninia, and common on the Talla Hills and Falaba plateau, 3500 ft., Scott-Elliot, 
4925 ! 4946! 5150! Ivory Coast: shore of the lagoon at Dabow, Chevalier, 16199! 
Lagos : near Lagos, Moloney! Foster, 3! Awon River, Rowland! Nigeria: Nupe, 
river-bank, Barter, 1151! near the river at Ode Obba, Foster, 169! Old Calabar: 
near the river, Mann, 2268! Cameroons: Bipinde, Zenker, 1227! 1551! 1631! 
1724! Johann Alorechtshshe, Staudt, 652! Tibati, Ledermann, 2365! 
South Central. Lunda; Lulua, Pogge, 298! 633, 674! 
Var, ? acuminata, Hutchinson. Leaves shortly acuminate. 
Upper Guinea, Cameroons: Barombi, Preuss, 8! Johann-Albrechtshdhe, 
Staudt, 577! 
9. U. Bossenge, De Wild. Etudes Fl. Bas- et Moyen-Congo, ii. 271, 
t. 70, figs. 1-4. A much-branched tree; branchlets glabrous when 
mature. Leaves obovate, obtuse or rounded at the apex, somewhat 
cuneate at the base, 4-64 in. long, 14-24 in. broad, glabrous on both 
surfaces ; lateral nerves 10-12 on each side ; stipules soon falling off; 
petiole }-I} in. long. Male flower-heads axillary ; peduncle 3-3 in. long. 
Thvolucral bracts obovate, 5 lin. long, 4 lin. broad, glabrous. Calyx 
glabrous, subentire or undulate. Filaments glabrous. Rudimentary 
ovary glabrous, gradually widened into a flat top, reaching the top of 
the calyx-tube. Female flowers not known. 
South Central. Belgian Congo: near Eala, Laurent, 128. 
Native name « bessenge.” 
10. U. nitida, Mill. Arg. in Flora, 1864, 517. A shrub or tree 
up to 50 ft. high; trunk erect, up to 18 in. in diam. ; head spreading. 
aves crowded towards the ends of the branchlets, oblong-elliptic or 
