Croton.] 



CXXII. EUPHORBIACE-E (hUTCHIXSOX). 



749 



Leaves mostly cordate at the base; 

 fruits subglobose, ^ iu. long, tii- 

 obed ...... 



tfLeaves glabrous below or rarely with a 

 few scattered hiiirs on the nerves. 

 Leaves broadly rounded and subcordate 

 at the base, scarcely 1^ times as long 

 as broad ; male intlorescence maiiy- 

 tlowered, about 6 in. long 

 Leaves slightly narrowed to an obtuse 

 base, more than twice as long as 

 broad; male inHorcscence few- 

 rtowered, 2'^ in. long or less . 

 Racemes bisexual. 



Petals present in both sexes. 

 Leaves grey-tomentellous below 

 Leaves glabrous or rarely with few hairs on 

 both surfaces. 

 Leaves oblong or oblong-elliptic, obtuse 

 and not or only slightly acnminate ; 

 petiole about ^ in. long 

 Leaves ovate, acuminate ; jjetiole |— 1^ 

 in. long. 

 Leaves 5-6 in. long, slightly toothed 

 Leaves 1^-3^ in. long, rather coarsely 

 crenate-serrate .... 



Petals absent from the female flowers or 



very rudimentary. 



Leaves woolly-tomentose or very densely 



pubescent below, especially when 



young. 



Leaves small and subentire, 1-2 in. 



long 



Leaves distinctly toothed, 2-5^ in. long. 

 Styles twice bilobed 

 Styles once bilobed. 



Female flowers confined to the lower 

 part of the inflorescence, not 

 mixed with the males. 

 Leaves minutely and closely 

 denticulate ; fenjale flowers 

 l©ng-i)edicellate |. 



Lotives serrate; female flowers 

 sessile or subsessile 

 Female flowers scattered amongst 

 the males .... 



Leaves thinly pubescent or glabrous below. 

 Stamens 10-12. 



Leaves more or less rounded at the base; 



jjetioles 1^-3 in. long ; styles 



connate at the base for ^-^ tlieir 



length. 



Leaves remotely serrulate ; male 



buds glabrous except at the 



tips ; female flowers each in the 



middle of a cluster of males . 



38. C. macrostachys. 



23. C. dispar. 



35. 



24. 



7. 

 29. 

 30. 



C. nigritanus. 

 C. Poggei. 



C, polytrichus, 

 C. Gubouga, 



C. iniegnfolius. 

 C. harotsensis. 

 C. leuconeurus. 



31. C. Pgncertii. 



