4. CRUCIFER.E. 



25 



ennial, witli biting taste; stem 

 creeping, tliick, hollow, branch- 

 ing; leaves pinnatisect, the 

 terminal lobe usually larger and 

 rounded, but sometimes all 

 oblong ; sepals ecjual at base ; 

 petals white ; pod short, cylindri- 

 cal-compressed, spreading, rather 

 longer than the pedicels, valves 

 convex, without prominent 

 nerves: seeds ovoid, net - veined 

 under the lens, in 2 rows ; coty- 

 ledons accumbent. 



Along creeks in moist districts. 

 — Sept.-Apl. — Europe ; temperate 

 Asia. 



4. Barbarea, Beckmann. 



^From the old botanical name 

 of B. riihinris, "Herb of 

 St. Barbara.") 



1. Barbarea 



K. Br. 'Enrlij 11 



praecox, 



Nasturtium officinale. 



infer 



Barbarea prsecox. 



Cress. 



Stout edible biennial with erect 

 angular stems; radical leaves 

 lyrate, the upper ones pinnatifid, 

 with linear lateral lobes, auricled 

 and stem-clasping ; flowers large, 

 yellow ; sepals erect ; pods numer- 

 ous, linear, stiff, subquadrangu- 

 lar, almost erect on short pedicels 

 about as thick as the pod ; valves 

 prominently 1 - nerved ; .seeds 

 numerous, tuberculate ; coty- 

 ledims accumbent. 



Near market gardens. Bridge- 

 water. — Sept. -Dec. — Western 

 Europe. 



o. Sisymbrium, L. 



Sepals erect, equal at base; 

 pods linear, nearly cylindrical ; 

 seeds small, numerous, in 1 row; 

 cotyledons incumbent, but not 

 tdlded together. 



Pods short, apprcssod to stem 

 Puds long, spreading 



S. officinale 1 

 ,S'. orientate 2 



