164 
stems roughish ; pods erect, smooth. %. H. Native of Austria. 
Like 4. scabra in habit, but the pods are one-half narrower and 
the seeds are hardly margined. Flowers white. 
Schiwereck’s Wall-Cress. Fl. May, June. Clt. 1824. Pl. 4 ft. 
34 A. PETRÆ A (Lam. dict. 1. p. 221.) leaves smooth, ciliated 
or scabrous’ with simple or bifid hairs; radical ones on longish 
stalks, entire, toothed, or lyrate, stem ones oblong-linear, entire or 
toothed ; stem usually branched ; pods erectly-spreading ; stigma 
capitate ; petals obovate, unguiculate. %.H. Native of many 
parts of Europe, also in the island of Unalaschka. 
Var. a, Crantziana (D. C. syst. 2. p. 230.) pod long. A. 
Crantziana, Ehrh. herb. 78. A. Thaliana, Crantz. austr. 1. p. 
39. t. 3. f. 2. Native of Austria and Transylvania in fissures of 
rocks and among stones. Flowers white or purplish. 
Var. B, hispida (D. C. 1. c.) Sisymbrium arendsum, Lin. fl. 
suec. 233. not of his spec. pl. Oed. fl. dan. t. 386. A’rabis hispida, 
Lin. fil. suppl. 298. Welch Rocket Cress, Pet. herb. brit. t. 50. 
f. 3. Cardamine petree‘a, Huds. ang. 293. Native of Scotland 
and Wales on mountains in fissures of rocks and among stones. 
Var. y, hastulata (D. C. 1. c.) Cardamine hastulata, Smith, 
engl. bot. t. 409. Horn. fi. dan. 1462. Native of Britain and 
Norway, in the fissures of rocks and among stones. 
Var. 6, Feroénsis (D.C. 1. c.) Cardamine Feeroénsis, Horn. fl. 
dan. 1382. Native of Feero island in the fissures of rocks and 
among stones. 
Var. c, runcinata (D.C. 1. c.) A. petree‘a, Lam. dict. 1. p. 22. 
Cardamine petræ'a, Lin. spec. 913. A. runcinata, Lam. dict. 1. 
p. 222. 
and among stones. 
Little tufted plants with white flowers. 
Alpine Rock or Wall-Cress. Fl. June, Jul. Britain. Pl. + foot. 
35 A. amprcua (D. C. syst. 2. p. 231.) leaves smoothish, 
‘radical ones sinuately-lyrate, middle ones oblong-oval, toothed, 
upper ones oblong-linear, entire; stem almost simple; pods 
rather erect. Y%.H. Sisymbrium Tilésii, Led. in mem. acad. 
petersb. 5. 1815. p. 548. Flowers white or purplish. 
‘ar. a, glabra (D.C. syst. 2. p. 231.) leaves and stems 
smooth. Native of Kamtschatka. 
Var. B, intermèdia (D. C. 1. c.) leaves smooth ; stem hispid at 
the base. Native of Unalaschka in sandy and grassy places. 
Var. y, scabra (D. C. }. c.) leaves pilose, scabrous; stem 
smooth. Native of Siberia. 
Ambiguous Wall-Cress. Fl. May, June. Clt. 1824. Pl. 4 foot. 
36 A. LYRATA (Lin. spec. 926.) radical leaves lyrately-pin- 
natifid, smooth or ciliated, stem ones linear ; stem hispid at the 
base, a little branched; pedicels spreading a little ; pods erect. 
u.H. Native of North America in cultivated fields and dr 
hills, particularly on rocks in Pennsylvania about West Chester, 
and from thence to Canada, extending westward to the Rocky 
Mountains, and to the islands of the Polar seas. A’rabis petre‘a, 
Hook. fl. bor. amer. p. 42. Flowers white. 
B, A. Kamtschdtica (Fisch. in litt.) flowers smaller; petals 
twice the length of the calyx, not thrice its length, as in the spe- 
cies, and the pods are longer and thicker. 
Lyrate-leaved Wall-Cress. Fl. May, Ju. Clt. 1823. Pl. 4 foot. 
37 A. AreNno'’sA (Scop. fl. carn. ed. 2. no. 857. t. 40.) leaves 
villose with forked hairs, radical ones lyrately-pinnatifid, stem 
ones deeply-toothed ; stem branched, hispid, with simple hairs ; 
pedicels and pods spreading. &.H. Native of middle Europe, 
viz. Carniola, Transylvania, Germany, Alsatia, France, Spain, 
&e. in vineyards in gravelly places and on rocks. Schrank. fl. 
mon. 3. t. 256. Hook.’ exot. fl. t. 221. Sisymbrium arendsum, 
Lin. spec. 919. Turritis arendsa, Lapeyr. abr. 387. Petals ob- 
ovate, rose-coloured, very rarely white or blueish. Pods linear, 
spreading. 
Var. B, Kamtschatica ; biennial; stems more numerous from 
1 
Native of Sweden and the Pyrenees, in fissures of rocks ` 
CRUCIFERA. X. Arasis. 
the root, thicker, less branched, and less hairy; flowers much 
smaller; petals obovate. &. H. Native of Kamtschatka. 
A. arendsa, Cham. et Schlecht. in Linnea. |. p. 17. 
Gravel Wall-Cress. Fl. April, July. Clt. 1798. Pl. 4 foot. 
38 A. Harre rı (Lin. spec. 929.) lower leaves lyrate, stalked ; 
terminal lobe ovate; upper leaves lanceolate, cut; stem branch- 
ed, slender, clothed with soft villi ; pedicels and pods spreading. 
u. $.H. Native of moist mountainous places near rivulets 
in Transylvania, Hungary, Piedmont, Switzerland, Austria, even 
to the confines of Bohemia, &c. &c. Walds. et Kit. hung. 
2. p. 126. t. 120. A. stolonifera Clairv. herb. val. 223. Lower 
branches weak, having the appearance of runners, but not root- 
ing. Petals obovate, white, double the length of the calyx. 
Var. B, Kamtschdtica ; flowers smaller. Y%.H. Native of 
Kamtschatka. A. Halléri, Cham. et Schlecht. in Linnza. 1. 
p. 17. . 
Haller’s Wall-Cress. Fl. May, June. Clt. 1816. Pl. 2 foot. 
39 A. sroronrreRA (Horn. hort. hafn. 618.) radical leaves 
somewhat lyrate, stalked; terminal lobe cordate, stem leaves 
oblong, sinuately-toothed ; stem stoloniferous at the base, pubes- 
cent; pedicels and pods spreading. X.H. Native of Carniola. 
Cardamine stolonifera, Scop. fl. carn. ed. 2. no. 818. t. 39. 
Like A. Halléri, but much smaller and slenderer, with creeping 
rooting runners. Flower white. Pods very slender, half an 
inch long. 
Stoloniferous Wall-Cress. Fl. May, June. Clt. 1819. Pl. 4 ft. 
40 A. Ovire’nsis (Wulf. in Jacq. coll. 1. p. 196. icon. rar. 
1, t. 125.) lower leaves stalked, oval, pectinately-toothed at the 
base, upper ones oblong, narrowed at the base; stem weak, 
smooth; pods somewhat spreading, scarcely longer than the 
pedicels. 2. H. Native in calcareous rocky moist places 
in the Alps of Oviro, Carinthia, Transylvania, on the Carpathian 
mountains. in the region of the Pinus Maghus, &c. Roem. fl. 
eur. 7. t.6. Sturn. deutchl. fl. icon. Nastartium Ovirénse, Andrz. 
ined. Flowers pale, red, rarely white. 
Oviro Wall-Cress. Fl. June, July. Clt. 1824. Pl. 4 to 3 foot. 
41 A. O-Wauinir’nsis (Cham. et Schlecht. in Linnea. 1. p. 
17.) leaves repand-toothed, rather scabrous, radical ones stalked, 
lyrately-pinnate, with about 3 pairs of leaflets, stem ones almost 
wanting ; stem ascending, smooth, bearing flowers almost to the 
base; siliques erectly-spreading, 3-times longer than the pedi- 
cels. 4%. H. Native of the Sandwich islands, particularly in 
O-Wahu. Root thickish. Stem numerous, proliferous at the 
base. Flowers small, white, with oblong-entire petals, which are 
hardly longer than the calyx. 
O-Wahu Wall-Cress. Pl. 1 foot. 
42 A, Cevenne’nsis (D. C. syst. 2. p. 234.) leaves all stalked, 
ovate, acuminated, grossly-toothed, somewhat velvety with small 
hairs; pedicels and pods spreading. &. H. Native of the 
Cevennes, in rugged shady places. Hésperis inodora, Gouan. fl. 
monsp. p. 167. Flowers pale-violet, almost like those of 4- 
arenodsa. Seeds brownish. Deless. icon. sel. 2. t. 26. 
Cevennes Wall-Cress. Fl. Ju. Jul. Clt. 1820. Pl. 1 to 2 feet. 
43 A. Lasto’Lopa (Link. enum. hort. berl. 2. p. 163.) stem 
leaves and pods downy with stellate hairs; radical leaves lyrate, 
upper ones entire. ¢.H. Native of Mexico. Racemes short. 
Calyx spreading. Style nearly a line long. 
Woolly-podded Wall-Cress. FI. Ju. Jul. Clt. 1826. Pl. 14 foot. 
r 
Sect. II. Lomo’spora (from Awpa, loma, a fringe, and eropa, 
spora,a seed ; seeds girded by a membranous wing.) D. C. syst. 
2. p. 234. prod. 1. p.146. Seeds marginate, or girded by a broad 
membranous wing. 
§ 1. Oblongipétala. Cauline leaves clasping the stem. Petals 
oblong-linear. 
