96H 



CXXII. EUPHOttBIACEiE (PRAIN). 



[Trayia. 



bristly, bristles 

 accompanied or 

 not by a soft 

 pubescence; 

 bracts subulate. 

 Leaves acuminate, 

 2 in. long or 



longer . . 16. T. cordifolia. 



Leaves acute, under 

 1 in. long; stems 

 sometimes (var. 

 par vifo lia) 



erect . . \1 . T. arabica. 



Leaves ovate-oblong, 

 hardly bristly; 

 bracts wide-ovate 26. T. insuavis. 

 iJJLeaves more or less distinctly 

 3-lobed and subhastate- 

 auriculate. 

 Knsal lobes semiorbicular, 

 sometimes obscure, their 

 margin serrate like the 

 central lobe; stems long, 

 slender, twining . . 22. T. OJcanyua. 



Bijsal lobes oblong, subhori- 

 zontal, more coarsely 

 toothed than the central 

 lobe ; stems erect ; female 

 calyx - segments often 

 fewer than six . . 34. T. dioica. 



♦•Female calyx 3-partite, or, if segments more than 

 3, the these 1 -seriate (see 34, dioica). 

 Leaves sessile or subsessile; stems erect. 



Racemes 6 in. long or longer; male flowers 

 in 3-tiowered cymules ; leaves lanceolate, 



rounded at the base •. . . , 35. T. Wildemanii. 



Racemes 1 in. long; male flowers solitary to 

 their bracts. 

 Leaves ovate,truncate or cuneate at tliebase 36. T. Gardneri. 

 Leaves linear- to ovate-lanceolate, sub- 



hastate-auriculate at the base . . ^\. T. suhsessilis. 



Leaves distinctly petioled, more or less cordate 

 at the base. 

 Stems erect or suberect. 



Male flowers solitary to their bi-acts; cocci 

 subglobose. 

 Leaves ovate-triangular, deep-cordate at 



the base 37. T. Dinteri. 



Leaves distinctly 3-lobed, subhastate- 

 auriculate at the base; female calyx- 

 segments usually more than three . 34. T. dioica. 

 Male flowers glomerulate; cocci bluntly 

 angled on the back; leaves ovate-lanceo- 

 late, shallow- to deep-cordate at the 

 base, hirsute 44. T. senegalensis. 



