OP ORNAMENTAL PERENNIALS. 69 
of branched hairs. The flowers are rather large ; and they are disposed in dense, rounded racemes. The seed- 
pods are very long and slender, and they appear disposed in tufts like little rods, about three inches in length. 
The calyx is large, and the sepals erect and pointed ; while the petals are somewhat recurved. Tlie species is a 
native of Calabria, whence it was introduced in 1832. It appears hardy, but it seldom flowers well, unless 
slightly protected during winter ; as its flowers appear in February, and its seeds ripen in March. 
2.— ARABIS ALPINA, Lin. THE ALPINE WALL-CRESS. 
SvNONYME. — Draba alba, Banks. 
ENGRiTiNGS. — Bot. Mag. t. 226 ! and out fig. 7 in PI. 1?. 
Specific Chiricteh. — Leaves many-toothed, lanceolate, acute, 
villous with branched hairs, radical ones somewhat stalked, cauline ones 
conlate, clasping the stem ; pedicels longer than the calyx, which is 
fitnoothish. (G. Don.) 
Description, &c. — This is a pretty little hardy plant, with white flowers, which it produces in great abundance 
in April and May. It is a native of the mountainous parts of Switzerland, Austria, and Lapland ; and it was 
certainly introduced before 1658, as its name is included in a list of plants growing in the Bot. Gard. at Oxford 
in that year ; indeed in some catalogues it is said to have been introduced in 1596. There are two varieties, one 
with fewer leaves, and consequently less ornamental ; while the other is a dwarf plant but just rising above the 
ground. Both the species and the varieties are quite hardy, and they will grow in any soil or situation ; though 
they flower best on rockwork, or in a warm, rather dry border, exposed to the sun. 
Synonyhes. — A. caucasica, Willd. ; A. alpina, Pall, j Cheiran- 
thus mollis, Tlorne ; White Alyssnm. 
Engraving. — Bot. Mag. t. 2046. 
3.— ARABIS ALBIDA, Stev. THE AVHITE WALL-CRESS. 
Specific Character. — Leaves few-toothed, hoary, or downy, with 
branched hairs ; radical leaves obovate-oblong, cauline ones cordately- 
sagittate, clasping the stem ; pedicels longer than the calyx. (G. Don.) 
Description, &c. — This and the preceding species are two of the most valuable dwarf perennials in British 
flower-gardens, as they grow so compactly and form such a brilliant mass of white as to be useful in all cases 
where the beds form a regular figure. A. allida is a native of Tauria, whence it was introduced in 1798. It 
is quite hardy, and requires no care in its cultivation after its first planting. It is propagated by dividing 
the root ; and it will flower from February to June. 
OTHER SPECIES OF ARABIS. 
There are several British species of this genus, which are rather pretty, particularly the common rock-cress, 
A. petraa ; but they are scarcely worth the trouble of cultivating. A. coUina, a Neapolitan species, and some 
other kinds that are natives of Europe, have pretty flowers when viewed separately ; but they are so small, and 
grow so far apart on a long slender stalk, as to have only a weedy effect in a garden. 
GENUS III. 
CARDAMINE, Lin. THE BITTER CRESS. 
Lin. Sysl. TETRADYNAMIA SILIQUOSA. 
Gemehic Character. — Silique linear, with flat nerveless valves, usually opening with elasticity. Seeds in one series, ovate, not margined. 
Umbilical cord slender. Cotyledons accumbent. (G. Don.) 
Description, &c. — The prettiest of the numerous species of this genus are British plants, which are rarely 
cultivated in gardens, from their great abundance in the open country. Tlie prettiest of these British species is 
