24 
6. CEUCIFEE^. 
Fries. — Fl. moderate. Raceme close. Pods long, torulose. 
Lower 1. usually interruptedly pinnate. — South of Ensjland. 
B. v.— vn. f J r 
5. Ttieri'tis Linn. Tower- wort. 
1. T. glabra (L.) ; radical 1. toothed hairy, stem-l.''glabrous 
entire amplexicaul with a sagittate base, pods straight erect. — 
H. B. 777. R. ii. 44.— Plant very erect and straight, 1—3 ft. high. 
Fl. whitish yellow. — Banks, particidarly in Norf. and SiifF. Clilfs 
in Glen Devon, Scotland. B. VI. VII. E. S. I. 
6. Ar'abis Linn. E,ock-Cress. 
1. A. hirsr'da (R. Br. ) ; 1. hispid dentate, stem-l. truncate-«M- 
ricled or cordate at the base, auricles patent, pods erect narrow 
straight. — E. B. 587. — St. 1 foot high, clothed with spreading 
mostly simple hairs and many erect leaves. Sometimes the 
hairs on the stem are adpressed and branched. Root-1. narrowed 
into a footstalk. — Koch and Reich, divide this into two or more 
Bpecies.— Walls and banks. B. VI.— VIII. E. S. I. 
2. A. ciliuta (R. Br.) ; 1. glabrous and ciliate or hispid some- 
what toothed nearly sessile, stem-l. sessile with a rounded base, 
pods erect naiTOW straight. — St. erect, glabrous. L. glabrous, 
ciliate. Seeds without wings. — E. B. 1740. — St. and 1. some- 
times hispid, when it is often taken for A. hirsufa. — Rocks by 
the sea, Cfonnemara, Ireland. Lidstep, Pembrokeshire. B. VII. 
vm. ' E. I. 
3. A. stric'ta (Iluds.) ; I. hispid and ciliate deeply sinuate- 
dentate naiTowed into a footstalk, stcm-l. sessile, pods few di- 
stant erect-patent straight. — E. B. 614. — St. erect, glabrous, 
hispid below, 6 — 8 in. high. Fl. rather large. " Seeds with a 
narrow margin and winged at the apex." — Limestone clifls near 
Bristol. P.IV. V. E. 
4. A.petrcp.'a (Lam.) ; /. glabrous or with forked hairs lyrate- 
pinnatifid or oblong-ovate nearly entire with long stalks, stc7n-l. 
narroio nearly eyttire stalked, pods spreading slender straight. — 
E. B. 469.— St. erect or decumbent, 3 — 8 in. long, glabrous. Fl. 
large, white tinged with pui-ple. Seeds oblong with a narrow 
margin and slight wing at tlie end. — x\lpine rocks in E. and S. 
Ben Bulben, Ireland. Mr. Wynne. P. VII. VIII. E. S. I. 
A. Turrita ( L.) ; 1. clothed with short forked hairs dentate 
elliptic narrowed into a stalk, stem-l. deeply coi-date-amplexi- 
caul long, pods flat with a tliickened margin recui-ved from an 
erect stalk, seeds with a membranous margin. — E. B. 178. B. ii. 
44. — St. 1 foot high, erect, hairy. Fl. yellowish. Pods 3 — 4 
in. long, without any central vein but with many prominent 
