CRUCIFERiE. 61 



Root annual, fibrous. Stem erect, 2-4 inches high. Leaves 

 all radical, in a rosette, tapering, subulate, recurved. Flowers 

 few, white, on short, spreading-erect pedicels. Petals entire, 

 oblong. Pouch ovate-elliptical, rather longer than the pedicel. 

 Seeds few. 



In alpine lakes. Annual ; July. 



Teibe 3. — Silicle not opening, or rarely opening (in this latter state 

 the seeds remain attached to the valves). 



SYNOPSIS OF THE aENEEA. 



Senebieea. — Pouch two-celled, not opening ; cells one-seeded. 

 IsATis. — Pouch one-celled by abortion, not opening, one-seeded. 

 Cakile. — Pouch (sUicle) consistmg of two one-seeded joints, not opening. 

 Ceambe. — Pouch two-jomted, upper jomt globular, one-seeded. 

 Eaphantjs. — Sihcle (monUiform pod?) oblong, transversely divided uato one- 

 seeded cells, the lowermost one barren and unperfectly two-valved. 



Senebiera, Poir. — Annual plants, with spreading stems and 

 pinnate, petiolate leaves. Flowers small, in short clusters. Se- 

 pals spreading, not gibbous at the base, sometimes persistent. 

 Stamens sometimes 2-4 by abortion. Pouch two-celled, com- 

 pressed, reniform at the base, entire at the apex, or notched 

 both at the apex and base ; cells one-seeded ; valves thick, not 

 opening. Seeds oblong, somewhat triangular. 



S. Coronopus, Poir. — Coronopus Ruellii,Gsiert. Swine's Cress. 



E.B. 1660. L.B.S. 58. 



A. 15. C. 50. Lat. 50-58°. Alt. 0-100 yds. Tern. 52-47°. 



Stems numerous, quite prostrate, branching, the central axis 

 becoming or terminating in a dense cluster of fruit. Leaves 

 pinnatifid at the apex, entire and linear below ; lobes entire or 

 toothed, fleshy ; all the herbage is more or less glaucous. Calyx 

 persistent. Petals longer than the sepals. Clusters of fruit ob- 

 long, sessile, opposite to the leaves, on stout peduncles ; pedicels 

 shorter than the pouches. Pouch reniform, notched at the base 

 and rounded at the apex, strongly wrinkled. 



Waste places ; common. Annual ; June- August. 



S. didyma, Pers. — C. didyma, Sm. — S.pinnatifida, DC. Les- 

 ser Sivine's or Wart-cress e.b. 248. l.b.s. 57. 



A. 4. C. 10. Lat. 50-54°. Alt. 0-100 yds. It abounds at 

 Kingswood, near Bristol. 



Stems numerous, round, wiry, branching, prostrate or ascend- 

 ing, with lateral ascending branches, somewhat hairy and leaiy. 



