40 | THE CRUCIFER FAMILY. 
filaments, one or other of these characters being observable in all the 
species. ‘They have also usually a stiffer, more leafy habit, and even 
the annuals often look woody. 
Sepals persisting round the pod. Petals minute, peat ho 
Seeds 2ineach cell . : , . 1. A. calyecinum. 
Sepals falling off after floweri ing. Petals spreading, pure white. 
Seedslineachcell . : : ; : . 2. A, maritimum. 
The A. incanum, often ec as a genus under the name of 
Berteroa, having longer pods with more seeds, a common European 
annual, has been occasionally found near Lewes and near Weymouth, but 
does not appear to be permanently established. The yellow-flowered 
A. saxatile, from southern Europe, is a long established perennial in our 
rock-gardens, 
1. A. calycinum, Linn. (fig. 87). Smal’ A.—A small hard annual, 
often simple, 3 or 4 inches high, or, when very luxuriant, branching 
at the base, and 6 inches high. Leaves oblong-linear, much narrowed 
at the base. Petals inconspicuous, of a pale yellow. Pods in a long 
raceme, on short pedicels, nearly orbicular, the narrow herbaceous 
sepals persisting round them till. they are ripe. ‘The filaments of the 
shorter stamens have each a small fine tooth or appendage at their 
base. 
In waste places, on the edges of fields, &c., in central and southern 
Kurope, from Sweden to the Caucasus. In Britain it occurs rarely in 
England, Ireland, and southern Scotland. Sl. spring and early summer. 
2. A. maritimum, Linn. (fig. 88). Sweet A.—A hard annual or 
perennial, with much-branched procumbent or ascending stems, from 
4 or 5 inches to near a foot long. Leaves narrow-lanceolate or linear, 
narrowed at the base, or stalked. Flowers white with a honey scent, 
rather small, but the petals obovate, spreading, and conspicuous. Pods 
orbicular or slightly oval, with only one seed in each cell; the calyx 
deciduous. The filaments are without appendages. Keniga maritima, 
Br. 
In waste places and dry pastures, chiefly near the sea ; very abundant 
round the Mediterranean. Much cultivated in gardens, and established 
as a weed of cultivation in some parts of England. J. all swmmer. 
XIV. DRABA. DRABA. 
Small annuals or perennials, usually hairy or hoary with spr shea or 
tufted radical leaves, entire or toothed, the stem-leaves few or none, 
rarely many. Flowers white or yellow. Filaments of the stamens 
without appendages. Pod oblong or elliptical, from one and a half to 
near three times as long as broad, more or less flattened ; the partition 
broad ; the valves flat or convex, their midrib usually distinct. Seeds 
several in each cell. Radicle accumbent. 
A considerable genus, ranging over the northern hemisphere, ascend- 
ing to the greatest elevations and to high Arctic latitudes, and extending 
along the great mountain-chain of America into the southern hemisphere. 
The species mostly differ from Alysswm in their longer pod, and in a 
peculiar habit approaching that of Arabis ; from the latter genus they 
are distinguished by the pod which, though long for a siliculose 
