130 Key to the System of 



Fruit narrow-cylindrical, many times longer than broad. 



Lower leaves from lanceolar to elliptical, pinnatifid or 

 incised, upper leaves gradually almost linear, indented 

 or entire; flowers comparatively large; stigma ample; 

 dissepiment of fruit elongate -linear. E. Blennodia. 



BARBAHAEA. 



639. Fruit slightly spreading, linear-quadrangular. 



Rather tall herb ; lowest leaves spatular in outline, pinnati- 

 sected, with a much enlarged terminal segment ; upper 

 leaves from spatular-ovate to cuneate-rhomboid, incised 

 or indented ; flowers crowded. B. vulgaris. 



ARABZS. 



640. Petals yellowish-white. 



Rather tall herb, greyish -green ; lowest leaves from almost 

 spatular to cuneate-elliptical, incised or indented, beset 

 with branched hairlets ; upper leaves with an acutely 

 bilobed and sessile base, from ovate- to linear-lanceolar, 

 mostly entire, glabrous ; fruits strictly erect, many times 

 longer than their stalklets ; venule of valves carinular ; 

 seeds in each fruit-cell almost biseriate, narrowly 

 margined. A. glabra. 



WIIiCKIA. 



641. Stigmas narrow, decurrent along the acutely conical 



short style. 



Annual herb ; leaves almost lanceolar, indented or denticu- 

 lated ; calyces several times longer than their stalklets ; 

 fruit rather elongated, much beset with hairlets ; longi- 

 tudinal venules of valves thin. W. Africaiia. 



SISYSIBRIUM. 



642. Petals yellow. 



Annual, glabrous ; leaves mostly pinnatifid, their lobes few, 

 very narrow and entire ; fruits only about as long as their 

 slender stalklets. S. nasturtioides. 



Petals white 643 



643. Annual. 



Scantily beset with hairlets ; lower leaves pinnatifid, their 

 lobes from oblique-lanceolar to deltoid ; upper leaves few, 

 indented or entire; fruits filiform-cylindrical, about twice 

 as long as their stalklets, or in a stemless state of this 



