TETRADYNAMIA— SILIQUOSA. Arabis. 213 



Tourrete cilice. Reynier Mem. de la Suisse, vA. 171. 



On cliffs near the sea, but rare. 



By the sea side at Rinville, Cunnamara, in the west of Ireland. 

 Mr. J. T. Mackay. 



Biennial. July, August. 



Root simple, tapering. Stem generally solitary, from 2 to 4 inches, 

 and when cultivated near a foot in height, erect, quite simple, 

 leafy, round, smooth. Radical leaves several, in one simple 

 tuft, various in size, obovate, often reddish ; tapering at the 

 base 3 those of the stem alternate, sessile, or half-clasping, ellip- 

 tic-oblong ; all somewhat glaucous, quite smooth on both sides, 

 more or less evidently toothed, fringed with sim])le or forked, 

 scattered, spreading, bristly hairs ; some of which are often 

 crowded into a small tuft or beard at the tips of the leaves, whilst 

 others form a more regular fringe upon the taper bases, or foot- 

 stalks, of the radical ones. Fl. in a simple, terminal, upright, 

 smooth, corymbose cluster. Cal. tawny, with a white edge. 

 Pet. twice its length, pure white, almost erect. Pods upright, 

 slender, each tipped with the simple, obtuse stigma, supi)orted 

 by a very short, conical style ,• their valves undulated, striated,, 

 and slightly keeled, 



5. A. hirsuta. Hairy Wall-cress. 



Leaves toothed and bristly. Stem rough, with simple 

 spreading hairs. Pods quite erect, with slightly keeled 



valves. 



A. hirsuta. Br.in Ait.H.Kew.v.A.\07 . Comp.edA.WA. Hook. 



Scot. 200. DeCand. Syst. v. 2. 223. Scop. Cam. v. 2. 30. 

 Turritis hirsuta. Linn. Sp. PI. 930. Tfllld. v. 3. 543. Fl. Br. 716. 



Engl. Bot. V. 9. t. 587. Jacq. Coll. v. 1. 70. 7c. Rar. t. 126. 



FL Dan. t. 1040. Dicks. H. Sicc.fasc. 9. 8. 

 T. n.456. Hall. Hist. v.\.\9S. 

 T. muralis minor. Raii Syn. 294, 

 Erysimum minimum annuum hirsutum. Moris.v. 2. 219. sect. 3 t 3 



Erysimo similis hirsuta non laciniata alba. Bauh. Pin. 1 01. Prodr. 

 42. f. 



Barbanua muralis. Bauh. Hist. v. 2.869. 



Daisy Tower Mustard. Pctiv. H. Brit. t.47.f 1 2. 



On old walls, stony banks, or rocks. 



In tlie north and west of England. Ray. Sussex. Doody. In Swi- 

 tham bottom' near Croydon. Huds. On the walls of Lakenham 

 church-yard, tnear Norwich. Mr. Crowe. Near Bury. Mr. Mat- 

 thew. Upon* rocks in Scotland. Dickson. Frequent on dry 

 rocks in Scotland. Hooker. 



Perennial. May. 



Root btrong and woody. Stems several, about a foot high, uj)- 



