642 cxxii. EUPHORBiACE^ (hutc'hinsox). [Uap€u;a. 



Soutb Central. Belgi:in Congo: in the forest at Buinba, Tynaert, 117. 



De Wildeman figures and describes linear petals in the male flowers of this 

 species. Sometimes portions of the columnar rudiment;iry 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^ 

 louiided or very shortly acuminate, more or less cuneate at the base, 

 5J-8 in. long, 2J-3J 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, 2J 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. 



Soutb Centrfil. Belgian Congo : near Nala, Seret, 778. 



This is probably identical with U. gulneensix, Miill. Arg. I 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, 3J-6J in. long, 1^— 3J in. broad, coriaceous; petiole J-l| in. 

 long, swollen at the top. Inflorescence axillary ; peduncle 5-6 lin, long, 

 attaining a length of J in. when in fruit. Ovary ovoid ; styles reflexed, 

 much divided. Fruits subglobose, |-1 in. in diam. 



Xiower Guinea. Lower Congo : Kisantu-Makela, Gillet, S4o4. 



16. U. Laurentii, De Wild. Etmles Fl. Bets- et Moyen-Congo^ 

 ii. 272, t. 69. A tree ; branchlets somewhat thick, longitudinally 

 sulcate in the dried state. Leaves obovate, rounded at the apex^ 

 cuneate at the base, 3J-6J in. long, 1|— 4 in. broad, glabrous ; lateral 

 nerves 7-10; petiole 1J-2J in. long. Male peduncles |-1 J in. long. 

 Bracts of the involucre ovate, obtuse, up to 5 lin. long and 3 lin. broad. 

 Male calyx villous, undulately lobed. Stamens overtopped by the 

 flattened apex of the pilose rudimentary ovary. Female flowers not 

 known. 



Soutb Central. Belgian Congo: Lake Tumba, Laurent. 



21. ANTIDESMA, Linn.; Benth. et Hook. f. Gen. PL iii. 284. 



Flowers dioecious. Petals absent. Male flowers: Calyx deeply 

 3-5-lobed or partite ; lobes or segments imbricate. Disk subentire or 

 consisting of distinct glands alternating with the stamens Stamens 2-5, 

 opposite the calyx-lobes ; anthers inflexed in bud, erect in the open 

 flowers ; cells distinct at the apex of a thickened and often curved con- 

 nective. Rudimentary ovary small. Female flowers : Calyx as in the 

 male. Disk often shortly embracing the base of the ovary. Ovary 1- 



I 



