612 



CXXII. EUPHORBIACE^ (HUTCHINSON). 



[ Bridelia. 



About 40 species, mostly from Tropical Asia, ranging through the Malay 

 Archipelago to New Caledonia anil Austialia; a few in Madagascar and South Africa. 



Fruits 2-celled. 



Lateral nerves of the leaves continued to the 



margin and forming a marginal nerve. 



Leaves rigidly coriaceous, hairy above, at least 



when young j tertiary nerves and veins 



forming a very j)ronunent network below. 



Sepals of the male flowers densely pubescent 



outside . . . . . . . \. B. mollis. 



Sepals of the male flowers neaily glabrous 



outside . . . . . . . 3. -B. scleroneuroides. 



Leaves rigidly coriaceous, glabrous above when 

 young ; tertiary nerves and veins forming 

 * a Very prominent network below . . 5. B. angolensis. 



Leaves membranous or tbiiily coriaceous, glab- 

 rous or slightly hairy above when young; 

 tertiary nerves and veins not prominent 

 belotv. 

 Leaves oblong or oblong-lanceolate, about 



thrice as long as broad . . . 4. JB. acleroneura. 



Leaves ubovate, obovate-elliptic or broadly 

 elliptic, mostly less than twice as long as 

 broa<l. 

 Leaves pubescent above, especially when 



y"u»g 



Leaves quite glabrous ab(jve 

 Lateral nerves reticulate and looped, rarely a few 

 extending to the margin. 

 Veins raised and very prominent below. 



Leaves glabrous beneath .... 

 Leaves pubescent beneath .... 

 Veins scarcely raised and inconspicuous below . 

 Fruits 1- celled. 



Lateral nerves not continued to the margin to 

 form a marginal nerve ..... 

 Lateral nerves continued to the margin to form 

 a marginal nerve. 

 Acumen of the leaves conspicuously mucronate . 

 Acumen of the leaves obtuse or only very 

 slightly mucronate. 

 Disk of the female flowers glabrous outside. 

 Flowers in the axils of the leaves 

 Flowers in leafless spicate clusters , 

 Disk of the female flowers pubescent outside. 

 Leaves nasty -pubescent below; veins pro- 

 minent on the lower sui-face 

 Leaves glabrous or minutely puberulous 

 below ; veins scarcely prominent . 



1. B. mollis, Hutchinson. A' small tree about 15 ft. high' 

 hranclilets brown-tonientose when young, becoming glabrous when 

 older. Leave.s broadly elliptic or obovate-rotundate, rounded or 

 truncate and sometimes slightly emarginate, rounded or slightly 



