IHLASPI. ^HUTCHINSIA.. 33 



Suborder III. Angustiseptce. Tribe VII. Thlaspidem. 



21. Thlas'pi Linn. Penny Cress. 



1. T. arven'se (L.) ; fruitbearing raceme elongate, poveh orbi- 

 cular with a broad dorsal wing, seeds concentrically rugose and 

 striate 6 — 6 in each cell, stem-1. oblong sagittate toothed. — 

 E. JB. 1659. S. ii. 5. — Pouch very large (^-J in.), stigma sub- 

 sessile. St. often a foot high. — Fields and roadsides. A. V. — 

 VII. Penmj Cress. E. S. I. 



2. T. perfolidtum (L.) ; fruitbearing raceme elongate, pouch 

 oboordate broadly winged above, style very short included within 

 the notch, seeds -3 — 4 in each cell smooth, stem-l. cordate-oh- 

 long. — R B. 2354. R. ii. 6. — About 6 in. high. — Limestone 

 in Oxfordshire and Gloucestershire. A. V. E. 



3. T. alpes'tre (L.) ; fruitbearing raceme elongate, pouch 

 oblong-obovate narrowed below, style equalling or exceeding the 

 notch, seeds 4 — 8 in each cell, stem-1. oblong cordate. — R. ii. 6. 

 — El. white, often tinged with rose, small. Pet. about twice as 

 long as the calyx. — a. T. sylvestre (Jord.), terminal lobes of 

 pouch rounded. L. usually entire. 8y. H. B. 146. — ^. T. occi- 

 tanum (Jord.) ; fruitbearing raceme rather shorter, pouch tri- 

 angular-obcordate with almost divaricate lobes, style much 

 exserted. L. usually slightly toothed. Sy. E. B. 147. — 

 Mountain pastures. Teesdale ; Thomhaugh, Northumb. ; Glen 

 Isla, Forfar. S. Settle, York; Llanrwst, N. Wales. P. VI. 



— vin. E..S. 



4. T. virens (Jord.) ; fruitbearing raceme oval or oblong, pouch 

 obovate scarcely notched, style much projecting, seeds 4-— 6 in 

 each cell, stem-1. oblong cordate. — Sy. E. B. 148. Jord. Obs. 

 PI. de Fr. iii. t. 1. T. alpestre Sm.— Fl. white, small. Pet. 

 about thrice as long as the calyx. Pouch with a very broad 

 and shallow notch often almost truncate. L. usually entire. — 

 Limestone rocks at Matlock. P. VI.— VIII. E. 



22. JSuTCHiNs'iA B. Br. 



1. H.petrce'a (R. Br.); 1. pumate, st. branched leafy, fr.- 

 raceme lax long, pouch blunt at both ends. — E. B. 111. R. ii. 6. 

 St. 65. 10. — St. 2 — 4 in. high. — Fl. small; pet. scarcely exceeding 

 the calyx. Cotyledons accumbent. — Limestone rocks, rare. 

 A. in.— V. E. 



[H. alpina (R. Br.) ; 1. pinnate, st. simple leafless, fr.-raceme 

 lax long, pouch acute at Doth ends. — R. ii. 11. St. 20. 11. — 



