46 BRITISH BOTANY. 



have been confounded with S. alba, from which it is sufficiently 

 distinct. 



Stems erect, branched and bushy, glabrous, or only with a few 

 spreading hairs. Leaves pinnate or pinnatifid, with oblong pin- 

 natifid or toothed segments, glabrous, fleshy. Flowers smaller 

 than in S. alba. Sepals spreading, shorter than the peduncles (pe- 

 dicels) . Pods short, smooth, ovate or oblong, spreading, ascend- 

 ing with a very long, flat, attenuated beak, which is glabrous, ex- 

 cept a few marginal fringes. This is readily distinguished from 

 S. alba by its smaller flowers, and especially by its glabrous, few- 

 seeded pods, as well as by its pinnatifid leaves. The whole herb- 

 age is glabrous and fleshy. 



Abundant this year, 1855, on mud spread out on Battersea 

 fields (park), with several exotics; also at Wandsworth Steam- 

 boat Pier, where it has been observed for several years. 



S. monensis, Bab. — Brassica monensis, Huds. Isle of Man 

 Cabbage. — e.b. 962. l.b.s. 132. 



A. 6. C. 12. Lat. 51-57°. Alt. 0. Tern. 50-48°. 



Root tapering, woody. Stem solitary, or several from the 

 same root, slightly branched, round, glabrous, or somewhat 

 bristly, or smooth, leafy. Leaves mostly radical, deeply pinna- 

 tifid, with toothed or jagged linear lobes; in tjie upper leaves 

 (when present) the lobes are linear and almost entire. Sepals 

 converging. Pods almost erect (slightly spreading), on short 

 pedicels, large, smooth, veiny, quadrangular. Beak about one- 

 third as long as the pod, tapering, ribbed, containing 1-3 seeds. 



Isle of Man, and Lancashire and Cheshire coasts. Perennial. 

 Biennial ? June-July. It has been gathered, with many exotic 

 Crucifers, at Wandsworth Steam-boat Pier. Qy. Is this species 

 miknown on the Continent, or is it included in the following ? 



S. Cheiranthus, Koch. — e.b.s. 2821. 



. A. [6]. 



Stem erect, glaucous, branching above, rough, with long, dis- 

 tant, spreading hairs. Leaves all pinnatifid, lobes unequally 

 toothed; upper leaves with linear, entire lobes. Sepals erect, 

 close to the petals, rather longer than the pedicels, slightly un- 

 equal. Petals large, yellow. Fruit (pods) glabrous, spreading; 

 valves with 3 dorsal nerves and anastomosing veins. Seeds 

 black. 



