221 
) Le ARABIS arenosa. 
Purple-flowered Arabis. 
TETRADYNAMIA SILIQUOSA.—Nat. Orv. CRUCIFERE. 
Gen. Cuar.—Siliqua linearis, stigmate subsessili coronata: valvis venosis v. 
nervosis. Semina uniseriata. Cotyledones accumbentes. Calyx erectus. 
wt OE, ; 
x 
Arabis arenosa ; foliis caulinis sinuato-pinnatifidis. petiolatis, pube ra- | 
mosa ; caule hispido, pilis simplicibus; petalis calyce triplo longiori- 
bus.—Br. | 
Apibie arenosa, Scop. Carn. 337. t. 40..-Brown, in Hort. Kem. ed. 2. v. iv. 
p- 106. Der Cann. Syst. Veg. v. ii. p. 232. 
Sisymbrium arenosum, Linn. Sp. Pl. p. 919.—Wi.up. Sp. Pl. v. iii. p. 498. 
Root small, simple, fusiform, annual, producing a few fibres ; bearing at the 
top one or several erect, flexuose, terete, simple or slightly branched 
stems ; these are hispid at the base, with patent, simple, rarely branch- 
ing white hairs. Leaves mostly radical, spreading, from 2-3 inches 
long, upon rather long footstalks, lyrato-pinnatifid, the ultimate segments 
large, frequently triangular, the rest lanceolate, spreading, or often a 
little decurved ; they are hispid, with branched hairs. The cauline 
leaves are more deeply pinnatifid, with linear segments, almost glabrous. 
Flowers rather large and handsome, of a pale lilac colour. Pedicels 3 an 
inch long, glabrous. Calyx of 4, leaflets, erect, hispid, green, 2 oppo- 
site ones larger than the other 2, and gibbous at the base. Petals much 
longer than the calyx, spreading, obovate, retuse, clawed. Stamens a little 
longer than the calyx. Pistil scarcely exceeding the stamens. Fruit: 
_ Sihqua about 2 inches long, patent, slender, linear ; the valves scarcely 
veined, glabrous. 
Native of rocky places and vineyards in sandy situations in | 
the south of Europe, and a very desirable plant in our gardens ; 
for it blossoms early (April), and makes a very beautiful ap- 
pearance with its deeply cut dark om leaves, and large showy 
flowers. 
VOL. II. 
