642 CXXH. EUPHORBIACEA (HUTCHINSON). { Vapaca. 
South Central. Belgian Congo: in the forest at Bumba, Pynaert, 117. 
De Wildeman figures and describes linear petals in the male flowers. of this 
species. Sometimes portions of the columnar rudimentary ovary become detached, 
and the parts figured may possibly represent these. Petals are unknown to me in 
the genus. 
14. U. Sereti, De Wild. Etudes Fl. Bas- et Moyen-Congo, ii. 274, 
t.72. A tree about 25 ft. high ; adult branches glabrous. Leaves obovate, 
rounded or very shortly acuminate, more or less cuneate at the base, 
5$-8 in. long, 24-3? in. broad, coriaceous, glabrous on both surfaces ; 
lateral nerves 8-9 on each side, more prominent below. Inflorescence 
axillary. Female flower solitary; peduncle 5-10 lin. long, glabrous. 
Involucral bracts obovate, nearly 5 lin. long, 24 lin. broad, glabrous. 
Calyx short, pilose on the inside. Ovary ovoid, slightly angled, 
glabrescent; stigmas 3, reflexed, much divided. Male flowers and 
fruit not known. 
South Central. Belgian Congo: near Nala, Seret, 778. 
This is probably identical with U. guineensis, Miill. Arg. T have not seen the 
specimen. 
15. U. Vanhouttei, De Wild. Etudes Fl. Bas- et Moyen-Congo, ii. 
275, <A tree with pubescent young branches, becoming glabrous when 
older. Leaves obovate-oblong, obtusely rounded at the apex, cuneate at 
the base, 34-6} in. long, 14-3} in. broad, coriaceous ; petiole 4-1} in. 
long, swollen at the top. Inflorescence axillary ; peduncle 5-6 lin. long, 
attaining a length of 3 in. when in fruit. Ovary ovoid; styles reflexed, 
much divided. Fruits subglobose, #-1 in. in diam. 
Lower Guinea. Lower Congo: Kisantu-Makela, Gillet, 3454. 
16. U. Laurentii, De Wild. Etudes Fl. Bas- et Moyen-Congo, 
ii. 272, ¢. 69. A tree; branchlets somewhat thick, longitudinally 
suleate in the dried state. Leaves obovate, rounded at the apex, 
cuneate at the base, 34-64 in. long, 13-4 in. broad, glabrous ; lateral 
nerves 7-10; petiole 14-24 in, long. Male peduncles #-1§ in. long. 
Bracts of the involucre ovate, obtuse, up to 5 lin. long and 3 lin. broad. 
Male calyx villous, undulately Jobed. Stamens overtopped by the 
roghialap apex of the pilose rudimentary ovary. Female flowers not 
nown. 
South Central. Belgian Congo: Lake Iumba, Laurent. 
21. ANTIDESMA,; Linn.; Benth. et Hook. f. Gen. Pl: iii. 284. 
Flowers diccious. Petals absent. Male flowers: Calyx deeply 
3-5-lobed or partite ; lobes or segments imbricate. Disk subentire oF 
consisting of distinct glands alternating with the stamens. . Stamens as 
opposite the calyx-lobes ; anthers inflexed in bud, erect 10 the oper 
flowers ; cells distinct at the apex of a thickened and often curved he 
nective. Rudimentary ovary small. Female flowers: Calyx. as 12 : 
male. Disk often shortly embracing the base of the ovary. Ovary 
