6. CBUCIFER^E. 19 



Radical leailets smaller than the stem leaves. Pedicels patent; 

 not so hairy as the normal form. 



Common. The first form occurs on wall tops and sandy soil, the second in 

 moist shady places and woods. (B) A. 3 8. 



11. ARABIS. Hairy Rock-Cress. 



A. HIRSUTA, Br. Stem erect, stiff, 8 15 in. high. Root le. 

 oblong, tapering to the base. Stem le. semi-ainplexicaul, cordate 

 or sagittate. Fl. small, white. Pods erect, linear, with a pro- 

 minent nerve. 



Eare. Banks and rocks. (B) B. 6 8. Frequent in Cumbrae; Bute; Arran; 

 and glens in the Campsie hills. 



12. TURRETS. Smooth Toiver-Mustard. 



*T. GLABRA, L. Stem erect, 1 2ft. high. Root le. attenu- 

 ated at the base, toothed, hairy. Le. pressed to the stem, 

 amplexicaul, entire, smooth. Fl. yellowish white. Pods 2 2| 

 in. long, erect. Whole plant glaucous. 



Very rare. Old quarry at Partick, and Bowling bay. (G) A. B. 57. 



13. BARBAR^A. Yelloiv-Rocket, Bitter Winter-Cress. 



B. VULGARTS, Br. Stem erect, 1 -2 ft. high, stout, furrowed, 

 branched. Radical le. lyrate. Stemle. oval, deeply and irregularly 

 toothed, all dark shining green. Fl. crowded, small, yellow. 

 Pods nearly an inch long, bluntly angled. 



Frequent. Pastures and sides of streams. (B) B. 58. Banks of Kelvin, 

 Cart, and Clyde. 



14. NASTURTIUM. Water-Cress. 



1. N. OFFICINALE, ~Br. Common Water-Cress. Stem decum- 

 bent and ascending 1 1| ft. high. Le. pinnate, leaflets ovate or 

 roundish ; terminal one subcordate, sinuate-dentate. Pet. white, 

 longer than the calyx. Pod linear, curved upwards, slightly 

 exceeding the pedicels. Seeds in 2 rows. 



Frequent. Rivulets amongst stones, in ditches and streams. (B) P. 510. 

 Paisley Canal bank; Forth and Clyde Canal; rivulets from Cathkin hills, <fcc. 



2. N. TERRESTRE, Br. MaTsli Yellow-RocJcet. Root fibrous. 

 Stem erect, 6 12 in. high. Le. lyrate pinnatifid, irregularly 

 toothed. Pet. same length as the sep. , yellow. Pods ovoid or 

 oblong ; seeds crowded, in 2 rows, in each cell of the pod. 



Frequent. Muddy river banks, and watery places. (E) A. B. 6 10. Below 

 Govan on the stone embankment; rivers Cart and Kelvin; Clyde upwards from 

 Dalmarnock; Gourock, &c. 



15. COCHLEARIA. Seurvy-Grass. 



1. C. OFFICLNALIS, L. Radical le. roundish or reniform, sinuate 

 or entire, petioles long, stem le. nearly all sessile, pouch globose 

 ovoid, Fl. white. 



or ( 



