51 MUSTARD FAMILY. 



7. CHUmATTTHtrS, WALLFOWER. (Ch^ri is the Arabic name.) 

 Like Stoclcs, but slightly if at all hoary, and the flowers orange, brown-red- 

 dish, or yellow, l]. 



C. Cheiri, Common Wallfloweh. Cult, from S. Eu., not hardy N., 

 a raucli-prized house-plant ; stem woody, crowded with the narrow and pointed 

 entire leaves. 



8. ERYSIMUM. (Name from Greek, and meaning to draw blisters, from 

 the acridity.) 



E. Asperum, "Western Wallflowek. Wild fi-om Ohio W. & S. ; like 

 the wild state of the Wallflower, with bright yellow or orange flowers, but the 

 seeds are different, and the long pods quite square in the cross-section ; the 

 leaves somewhat toothed and hoary. ® 11 



E. cheirantholdes, Treacle-Mustard or Wormseed Mustard. 

 A rather insignificant annual, wild or run wild in waste moist places, with slen- 

 der branches, lanceolate almost entire leaves, and small yellow flowers, followed 

 by shortish and obscurely 4-sided pods on slender spreading pedicels. 



9. B ABB ARE A, WINTER-CRESS. (The Herb of Santa Barbara.) 

 Different from the last genus in the seeds, divided leaves, and in the general 

 aspect. Leaves used by some as winter salad, but bitterish. @ IJ. 



B. vulgaris. Common W. or Yellow Rocket. Smooth, common in 

 old gardens and other rich soil, with green lyrate leaves, and bright yellow 

 flowers, in spring and summer ; pods erect, crowded in a dense raceme, much 

 thicker than their pedicels. 



B. praecox, Early W. or Scurvy-Grass. Cult, from Penn. S. for early 

 salad, beginning to run wild, probably a variety of the last, with more numerous 

 and narrower divisions to the leaves ; the less erect pods scarcely thicker than 

 their pedicels. 



10. ARABIS, ROCK-CRESS. (Name from Arabic.) Fl. spring and 

 summer. Leaves mostly simple and undivided. 



# Wild species, on rocks, ^c. .- flowers white or whitish, not showij. (f) 



A. lyr^ta, Low R. A delicate, low, nearly smooth plant, with a cluster 

 of lyrate root-leaves ; stem-leaves few and naiTow ; bright white petals rather 

 conspicuous ; pods slender, spreading. 



A. hirstlta, Hairy R. Strictly erect, l°-2° high; stem-leaves many 

 and sagittate ; small greenish-white flowers and narrow pods erect. '■ 



A. laevigata, Smooth R. Erect, l°-2° high, glancous ; upper leaves 

 sagittate ; flowers rather small ; pods 3' long, very narrow and not very flat, 

 recurving ; seeds winged. 



A. Canadensis, Canadian or Sicklepod R. Tall, growing in ravines; 

 stem-leaves pointed at both ends, pubescent ; petals whitish, naiTow ; pods 3' 

 long, scythe-shaped, very flat, hanging ; seeds broadly winged. 



# * Wild, on river banks : flowers pink-purple, rather shomj. ® % 



A. hesperidoides, Rocket R. Smooth, erect, l°-3° high; with 

 rounded or heart-shaped long-petioled root-leaves, ovate-lanceolate stem-lesives 

 (2' -6' long), the lower on a winged petiole or with a pair of small lateral 

 lobes ; petals long-clawed ; pods spreading, narrow ; seeds wingless. Banks of 

 the Ohio and S. W. 



# * • Garden species ; flowers white, showy. U 



A. alplna, Alpine R., and its variety? A. Albida, from En., low and 

 tnfted, hairy or soft-downy, are cult, in gardens ; fl. in early spring. 



11. CARDAMINE, BITTER-CRESS. (Ancient Greek name.) U 



C. hirstlta, Small B. A low and bnmching insignificant herb, usually 

 not hairy, with slender fibrous root, pinnate leaves, the leaflets angled or 

 toothed, and small white flowers, followed by narrow upright pods : common in 

 moist soil, fl. spring and summer. 



