32 6. CEDCIFEILaB. 



14. DiPMTAx'is Oand. Wall-Mustard. 



1. D. tenuifdlia (DO.) ; st. woody beloio branched sttbglabrous 

 leafy,!, glaucous linear-lauceolate very acute sinuate-dentate or 

 pinnatifld, segments linear remotely dentate, ped. veiy long, 

 pet. roundish-obovate -with a short clarw. —Sinapia Sm. B. B. 

 525.— Fl. large ; pet. hlunt hut slightly acuminate. St. 1— IJ 

 foot high. Plant foetid.— Old walls. P. Vn.— IX. E. S. I. 



2. D. mwdlis (DO.) ; st. herbaceous simple hispid and leafy at 

 the hase, 1. almost glabrous ovate-lanoeolate sinuate-dentate or 

 pinnatifld, ped. as long as expanded flower, pet. roundish-ovate 

 with a short claw.— <S«o^;s Sm. JE. B. 1090.— Pedicels as long 

 as the flowers. Pet. abrupt or emarginate. L. often blunt, 

 never very acute. — We have two forms : (1) with the base of 

 St. leafy with axiUary branches ; (2)1. all radical in a rosette and 

 st. simple. — Waste ground. A. VXII. IX. E. S. ? I. 



Suborder II. Latiseptas. Tribe IV. Alyssinece. 



15. Alts'stjm Linn. 



*1. A. calyckmm (L.) ; herbaceous hoary with starry pubes- 

 cence, 1. obovate-lanceolate attenuate below, pods orbicular 

 steUate-pubesoent, calyx persistent, filaments all toothless, 

 shorter ones from between 2 setaceous processes. — E. B. 8. 

 285.3. R. ii. 18.— Oells of the pod 2-seeded. Pet. yellow, be- 

 comins- at length white. — Grassy commons, S. ; ploughed land, 

 E. A V. Vf ^ E. S. 



[A. marit'imum (L.) ; procumbent, hairs bipartite, 1. hnear- 

 lanceolate acute, cal. deciduous, pods oval pointed glabrous. — 

 a. B. 1720. B. ii. 18.— St. rather woody below. Fl. white, 

 sweet-scented. — Naturalized near the sea. P. VIII. IX.] E. 



16. Dra'ba Linn. Whitlow-grass. 



1. D. a'izoides (L.) ; st. leafless glabrous, I. linear rigid acute 

 heeled glabrous ciliate, stam. equalling the slightly notched 

 petals, style as long as the breadth of the pouch. — E. B. 1271. 

 -ffi. ii. 15. — Fl. bright yellow. L. fringed with rigid hairs, 

 densely collected into cushion-like tufts.^On rocks and walls 

 at and near Pennard Castle near Swansea. P. III. IV. E. 



2. D. rwpes'tris (R. Br.) ; st. leafless or with 1 or 2 leaves 

 pubescent, I. lanceolate flat steUately pubescent, stam. shorter than 



