158 Key to the System of 



EUPHORBIACEAE. 



EUPHORBIA. 



760. Leaves rather long, from broad-linear to narrowly 



lanceolar-elliptical. 



Poison-herb, erect, rather tall, glabrous, somewhat suc- 

 culent ; leaves partly scattered, often truncate and 

 imperfectly denticulated ; glandules of the involucre 

 renate, brownish, undivided ; fruit rather large ; seeds 

 appendiculated. E. ereniophila. 



Leaves small, from roundish to almost oval ... ... 761 



761. Subtle-downy; glands denticulated. 



Poison-herb, dwarf; leaves roundish- or cuneate-ovate, 

 serrulated, oblique ; lobes of the involucre and glandules 

 red ; fruit very small ; seeds without any appendage. 



E. erythrantha. 



Glabrous; glands entire. 



Poison-herb, prostrate ; leaves from oblique- elliptical to 

 roundish ; fruit very small ; seeds without any appendage. 



E. Drummondi. 



OXKAXiANTHUS. 



762. Fruit without any appendages. 



Glabrous ; leaves long-stalked, from ovate-deltoid to almost 

 rhomboidal, pointed, of thin texture, flat, without lustre ; 

 flowers in racemes ; calyx deciduous ; fruit roundish ; 

 seeds much enclosed in an arillar appendage. 



O. Leschenaultianus. 



BERTYA. 



763. Leaves flat. 



Arborescent, somewhat beset with hairlets ; leaves elongate- 

 elliptical, of thin texture ; sepals three times longer than 

 the bracts; fruit almost ovate, in length considerably 

 exceeding the sepals. B. Findlayi. 



Leaves recurved or revolute at the margin ... ... 764 



764. Leaves broad-linear, revolute at the margin. 



Shrubby, glabrous, somewhat viscid ; fruit almost ellipsoid, 

 in length considerably exceeding the sepals. 



B. Cmining'liaiiii. 



