1000 cxxii. EUPHORBiACE^ (prain). [Trogia, 



the breadth of the rhachis. Ovary densely hispid and bristly : styles 3, 

 glabrous, connate in their lower half in a slender column. Capsule 

 3-coccous, rather sparingly bristly, J in. across; cocci bluntly angled on 

 the back. Seeds globose, grey mottled with pale brown. — DC. Prodr. 

 XV. ii. 988. 



Upper Guinea. Seiiegambia : Albada, in vicefields, Xe/jrieur, 736! French 

 Guinea: neighbourliood of Timbo, Maclaud, 30! Gold Coast: Salaga, Krause t 

 Togo : Kekejande, 1000 ft., Kersting, A 615 ! Kete Krechi, Zech, 301 ! Nortliern 

 Nigeria: Yola, Dalziel, 157! Lokojn, Farsons, ^5\ Cameroons: Balda, 1250 ft., 

 Ledermann, 4019 ! Liinbanieni, 1000 ft., Ledermann, 4327 ! 



Nearest to T. angnstifolia, Bentb., and only satisfactorily distinguished by its 

 smaller stature, its erect or suberect habit, its broader bracts and its shorter racemes* 



77. HAMILCOA, Prain in Kew Bulletin, 1912, 107. 



Flowers dioecious, apetalous. Male : Sepals 5, imbricate. Stamens 

 18; anthers subsessile, smooth, 2-celled, dehiscence longitudinal. Rudi- 

 mentary ovary' 0. Female: Calyx O-partite. Disk urceolate ; ovary 

 3-celled ; styles thick, with 3 free stout stigmas. Fruit capsular^ 

 3-coccous ; cocci opening loculicidally from the base upwards ; pericarp 

 coriaceous. Seeds large, globose ; embryo small, cotyledons broad, flat. — 

 Shrub, climbing; leaves alternate, unequally petioled ; petioles pulvinate 

 at the base and apex ; flowers racemose ; racemes axillary ; pedicels 

 thickened. 



A single endemic species. 



1. H. Zenkeriy Prain in Kev) Bnlletin, 1912, 107. Shrub, climb- 

 ing; stems 20-30 ft. high. Leaves nearly sessile or long-petioled on 

 the same branch, ovate-oblong, caudate-acuminate, base wide-cuneate^ 

 margin remotely serrate, thinly coriaceous, 4-10 in, long, 1|-^ in. wide, 

 somewhat shining above, glabrous on both surfaces ; secondary nerves 

 8-10 pairs, raised beneath, looping within the margin ; petiole slightly 

 pulvinate at the base, distinctly pulvinate and geniculate at the apex^ 

 1^2J in. long, or at times reduced to the apical pulvinus and then only 

 1-2 lin. long. Racemes axillary, 6->^-flowered, peduncled ; males 

 J-1 in., females IJ in. long; peduncles J in. long; pedicels distinctly 

 thickened upwards, almost fleshy, males ^ in., females ^ in. long. 

 Male : sepals 5, free, strongly imbricate, ovate-oblong, obtuse. Stamens 

 18, almost sessile; anthers 2-celled, dehiscence longitudinal. Rudi- 

 mentary ovary 0. Female: Calyx 6-partite ; segments ovate, obtuse* 

 Disk urceolate. Ovary 3-celled, glabrous ; style thick ; stigmas 3, free, 

 stout. Capsule 3-celled, i in, across ; cocci subglobose, opening loculi- 

 cidally from the base. Seed large, globose, J in. across ; testa smooth, 

 mottled externally, spongy; embryo very small, cotyledons broad, flat* 

 — Plukenetia ZenkeH, Pax in Engl. Jahrb. xliii. 83. 



Upper Guinea. Cameroons: Bipinde; Mimfin, ZewAer, 2865 ! 3028b, 36461 

 4130 ! 



Tentatively referred to Plulcenetia by Pax, this plant does not belong to tliat 

 genus but represents a distinct one, perbaps most nearly allied to Plagiosft/les, Vierre, 

 and Pimeleodendron, Hassk. 



