V 



38 



VI. CRUCIFER^ : LEPIDINE^. lSe7i€biera. 



typical form of the plant, with petals and six stamens^ is as yet un- 

 known, unless described as a distinct species. Stem sometimes a foot 

 high, much branched. Seed-vessels numerous. Cotyledons incum- 

 bent, as in most of this genus ; whereas those of its very near affinity 

 L, Firginicum, are accumbent. 



** Style as long as the pouch. 



3. L. 



Drdba Br. (WMtloio P.) ; leaves amplexicaul broadly 

 oblong or lanceolate entire or toothed, pouch cordate entire at 

 the apex crowned with a style about its own length, valves 

 turgid. E. B. S. t. 2683. 



I 



Fields and hedges, rare. Swansea; at St, Peter's and Ramsgate, 

 Isle of Thanet ; banks of the railway at Forest-hill, Surrey ; left bank 

 of the Dee below Chester. %. 5, 6. — Stem 8 — 10 inches to a foot 

 high, branched, with large distant Zea?;es and almost umbellate cor^^mis 

 of numerous smaU Jlowers. Pedicels very long. 



*** 



Style Jiliform, much shorter than the pouch. 



Thlaspi 



4. L. campestre Br. (common Mithridate P.) ; pouch ovate 

 emarginate winged rough with minute scales, style scarcely 

 longer than the notch, cauline leaves sagittate toothed, ""' ' * 

 L.: E. B. t. 1385. 



Corn-fields and dry gravelly soils ; not uncommon in England and 

 Scotland. ©. 5 — 8. — Stems solitary, erect, 10 — 12 inches high, 

 corymbosely branched above. Lower leaves almost spathulate, all 

 slightly pubescent, as well as the racemes and pedicels. Pouch cu- 

 riously scaly. 



5. L. Smithii Hook, (smooth Field P.) ; pouch ovate emar- 

 ginate winged glabrous occasionally with a few minute scales 

 on the back, style twice as long as the notch, cauline leaves 

 sagittate toothed. — Lepidium hirtum Hooh Scot. TLIaspi 



(not X.) : E 



Borders of fields and hedges in Norfolk and Suffolk. 



Caernarvon- 



shire and Anglesea, 



Frequent, particularly in the west of Scotland. 

 Belfast and Dublin, plentiful. If.? 4 — 8. — >S'^ems many from the 

 same biennial or perhaps perennial root, 6 inches to more than 

 a foot high, diffuse, irregularly branched. Much resembling the 

 last, but truly distinct. Pouch with a much longer style, quite gla- 

 brous, and smooth or even ; except that sometimes on the middle 

 of the back there are a few minute scales. When glabrous it is the 

 L, heterophyllum of Bentham, from the Pyrenees; our common form 

 is found, however, In the north-west of France. 



26. Senebiera De Cand, Wart-Cress. 



7^r?/27 broader than long, 2-celled5 without valves or wings; 

 ceZZ^ 1 -seeded. Cotyledons long, linear, curved. — I^I'amedin 

 honour of M. Senebier^ an eminent Genevese physiologist. 



h 



