Tragia.] EUPHORBIACE.E (Prain). 503 



Leaves acute, petioled, 1 in. long or longer : 

 Stem.s erect or ascending, nut twining : 



Leaves lanceolate, with two large rounded basal 



lobea ; racemes sometimes 1-sexual (8) dioica. 



Leaves triangular-ovatej not lobed, (9) meyeriana. 



Stems twining, at least towards the top : 



Lobules of female calyx-segments as long as the 

 width of the central rhachis : 

 Leaves ovate-lanceolate, usually somewhat 3- 



lobate (10) rupestris. 



Leaves triangular-ovate (11) wahlbergiana. 



Lobules of female calyx-segments shorter than 

 the width of the central rbachis ; leaves 

 triangular-ovatej rarely 3-lobate (12) durbanensis. 



1. T. Rogersii (Prain in Kew Bulletin, 1912, 238) ; a herb with 

 woody base ; stems erect^ tufted, simple or sparingly branched, 

 8-10 in. high, laxly softly pubescent without stinging hairs ; 

 leaves sessile, membranous,, ascending, oA'atedanceolate or oblong- 

 lanceolate, acute, base truncate or rounded, margin minutely and 

 closely serrate except at the entire base, l4-2i in. long, \-\ in. wide, 

 sparingly pubescent above, more densely pubescent beneath espe- 

 cially on the nerves ; stipules linear-lanceolate, spreading, mem- 

 branous, 1 lin. lonff, their marofin ciliolate ; racemes terminal or 

 leaf-opposed, 1 -sexual and dioecious, male from 2-6 in. long; flowers 

 very many, in 3-flowered clusters above, in 3-flowered cymules 

 below ; bracts and bracteoles linear-lanceolate, their margin pilose ; 

 pedicels pubescent, shorter than the bracteoles ; male calyx usually 

 3-partite, but sometimes 4-5- (very rarely 6-) partite ; lobes ovate 

 or ovate-lanceolate, acute, sparingly pul^erulous within, pubescent 

 outside ; stamens 3, filaments longer than the anthers, rather wide- 

 based, incurved above ; anthers subcouuivent ; female racemes 

 3-4-flowered ; pedicels solitai-y to their bracts ; female calyx 6-par- 

 tite, lob^s rather wide-oblong, 5--6-lobulate on each side, the lobules 

 all ascending, narrow-lanceolate, rhachis accrescent and coriaceous, 

 densely pilose externally, glabrous wdthin, in fruit 2| in. long; 

 ovary densely setose ; styles 3, setose throughout and free almost to 

 the base ; capsule 3-coccous, \ in. across ; cocci rather closely setose, 

 subglobose ; seeds globose, 



Kalahari Eegio.n : Transvaal ; Waterval Ondcr, Rogers, 2597 ! near Barberton, 

 3000 ft., Thovjia-oft, 624! 625! 



A very distinct species. 



2. T. Sonderi (Prain in Kew Bulletin, 1912, 337); a herb with 



^voody base ; steins below erect and rigid, above twining, 3 ft. long, 

 spai'ingly branched, finely pubescent and armed with stinging 

 bristles ; leaves long-petioled, membranous, triangular-ovate, acute, 

 base cordate, margin strongly and rather coarsely serrate or 

 duplicate-serrate, 1 1-3 in. long, 1-2^ in. wide, uniformly sparingly 



