CRUCIFER^. 33 



A. hirsuta, Br. — A. sagiUata, DC. — A. hirmta ^, Koch? 

 Hairy Rock-cress. — e.b. 587. l.b.s. 92. 



A. 17. C. 70. Lat. 50-58°. Alt. 0-1000 yds., in the East High- 

 lands. 



Root annual. Stems several, usually simple, leafy and hairy, 

 6-12 inches high. Root-leaves oblong, tapering at the base; stem- 

 leaves sagittate, clasping, oblong, toothed, cihatedand hairy. Calyx 

 equal, about as long as the pedicel. Petals oblong-linear, double 

 the length of the sepals. Pods erect, very much longer than the 

 pedicels, compressed. Seeds finely reticulate or punctate, ovate, 

 with a narrow wing, in one row. 



Banks and rocks. Biennial; June- August. A very variable plant. 



A. ciliata, Br. Fringed Rock-cress. — e.b. 1746. l.b.s. 91. 



Root tapering, vertical. Stems erect, 4-6 inches high, more 

 or less according to situation, quite simple, round, leafy. Root- 

 leaves obovate or oblong, tapering below, slightly toothed, 

 glabrous, tufted ; stem-leaves linear-oblong, with a rounded base, 

 quite sessile and half -clasping , with a few ciha, and somewhat 

 toothed. Petals longer than the sepals, nearly erect. Pods erect, 

 long, linear, compressed, straight, erect, five times as long as their 

 pedicels ; valves undulated. Seeds without wings. 



Ireland and Scotland? on rocks. Cunnamara, by the sea. 

 Glen Esk ? Biennial ; July, August. 



A. stricta, Huds. Erect Rock-cress. — e.b. 614. l.b.s. 90. 

 A. 2. C. 2. Lat. 51-52°? Alt.? Tern. 49-48°. 



Stem erect, rigid, simple or branched, 4-6 inches high. Root- 

 leaves in a rosette, crenulate or toothed, oblong, tapering ; stem- 

 leaves very few (1-3), ovate, toothed and slightly ciliated, not 

 auricled (two projecting lobes at the base). Calyx about as long as 

 the pedicel. Pods compressed and angled, large compared with 

 the size of the plant. Seeds truncate and slightly winged at the 

 apex. 



On the high rocks that skirt the Avon, below Bristol and 

 Clifton. Per. ; April, May. 



A. petrsea) Lam., Crantz. Alpine Rock-cress. — e.b. 469. 

 l.b.s. 89. — A. hispida, Lin. Sup. 298. — A. hastulata, English Bo~ 

 tany, as above. 



A. 6. C. 12? Lat. 53-61°. Alt. 300 yds., in East Highlands, to 

 1400 yds. in the same. Tem. 44-33°. 



Root perennial. Stem erect, simple, glabrous. Root-leaves 

 5 / 



