CRUCIFER.E. 35 



without a nerve, or faintly nerved at the base, separating with 

 elasticity. Seeds in one row ; funicle not dilated. 



Sect. I. Perennial plants, with petals tlirice as long as the calyx. 



C. pratensis, Lin. Meadow Pink, Cuckoo-flower, Lady's 

 Smock. — E.B. 776. l.b.s. 85. 



A. 18. C. 82. Lat. 50-61°. Alt. 0-1100 yds. in East HigUands. " 

 Tern. 52-36°. 



Root short, truncate, oblique or nearly horizontal. Stems 

 glabrous, erect or ascending, 8-12 inches high. Leaves pinnate, 

 with numerous leaflets ; leaflets obovate or round, faintly toothed 

 or angular, the terminal lobe often large ; leaflets of the upper 

 leaves linear. Flowers large, lilac or white. Petals about three 

 times as long as the calyx. Stamens about half as long as the 

 petals. Beak of the pod short and blunt. 



Moist meadows. Per. ; April, May. 



Var. C. dentata, Schultes. Segments of the stem-leaves oblong 

 and toothed. 



C. amara, Lin. Bitter Cress. — e.b. 1000. l.b.s. 84. 



A. 14. C. 50. Lat. 50-58°. Alt. 0-200 yds. in England. Tern. 

 ' 50-46°. 



Root slender, branching, knobby. Stems erect or ascending, 

 flexuous, angular and furrowed, very leafy. Leaves pinnate ; leaf- 

 lets obovate or oblong, angular, sinuate. Sepals ovate, twice or 

 thrice shorter than the petals. Anthers jowrp/e or violet. Pods 

 slender, spreading, slightly turgid. Seeds ovate, yellowish-green. 



Banks of rivers and other moist places, not common. Per. ; 

 April-June. — Tliis plant, which is readily distinguished from 

 C. pratensis by its angular furrowed stems and more bushy 

 habit, agrees with the following in its more straggling growth 

 and dentate leaves. In habit the variety C. sylvatica approaches 

 to C. pratensis, and C. hirsuta to C. amara. 



Sect. II. Annual or biennial plants. Petals about double the length of the sepals. 



C. hirsuta, Lin. Hairy Bitter Cress. — e.b. 492. l.b.s. 86. 



A. 18. C. 82. Lat. 50-61°. • Alt. 0-1000 yds. in East Highlands. 

 Tern. 52-37°. 

 Roots vertical, fibrous. Stems solitary or several, erect, hairy, 

 sulcate, branched, leafy. Leaves pinnate, with 3-4 pairs of leaf- 

 lets, which are unequal at the base, rounded or oblong, obscurely 

 toothed or angular, the terminal one is the largest. Petioles not 

 auricled. Flowers small, white. Petals double the length of the 



