— 
Tx .7 
vo 
ar 
Erysimum. | VI. CRUCIFERZ. 
X. ERYSIMUM. ERYSIMUM. 
Erect annuals or perennials, pale or hoary with closely appressed 
hairs, rarely quite glabrous; the leaves entire, or slightly toothed. 
Flowers yellow, or rarely yellowish-white. Pod linear, nearly quad- 
rangular from the very prominent midrib of the valves. Stigma broadly 
capitate, or with short, spreading lobes. Seeds ovoid or oblong, the 
seedstalk not flattened, the radicle incumbent on the back of one of 
the cotyledons. 
A rather numerous eenus in the northern hemisphere, differing from 
Cheiranthus in the seeds, from Sisymbrium by the midrib of the valves 
of the pod being more prominent than in all the species of that genus 
except S. officinale. 
Plant slightly hoary. Leaves tapering at the base .- .. LH. chetranthoides. 
Plant glabrous and glaucous.’ Leaves clasping the stem, and 
rounded at the base. : d : ‘ . 2. #. orientale. 
1. EH. cheiranthoides, Linn. (fig. 74). i PE Mustard.—A_ stiff, 
erect annual, 1 to 2 feet high, slightly hoary with closely appressed 
hairs. Leaves numerous, of a pale green, broadly lanceolate, entire or 
slightly toothed, tapering into a short stalk at the base. Flowers small, 
pale yellow. “Pods numerous, on spreading pedicels, seldom an inch 
long, the stigma slightly dilated. 
In waste and cultivated places, in northern and central Europe, Asia, 
and northern America. Diffused over a great part of Britain, but pro- | 
bably introduced. Fl. summer and autumn. 
2. E. orientale, Br. (fig. 75). Hare’s-ear.—An erect, perfectly 
glabrous, and somewhat glaucous annual, a foot high or rather more. 
Radical leaves obovate and stalked, the stem-leaves oblong, 2 or 8 inches 
long, quite entire, and embracing the stem with prominent rounded 
auricles. Flowers pale yellow, or whitish. Pods 3 or 4 inches long, 
slender, in a loose raceme, the midrib of the valves very prominent. 
In stony fields and waste places, in central and southern Europe, and 
western Asia, extending northwards to the Baltic. In Britain it has 
been gathered occasionally near the southern and eastern coasts of 
England, but appears scarcely to be permanently established. FV. 
spring and summer. - 
XI. BRASSICA. BRASSICA. 
Metinals or perennials, either glabrous or with stiff or rough hairs, the 
lower leaves usually deep pinnate, or lyrate, the upper ones sometimes 
entire, the flowers yellow. Pod linear, cylindrical or nearly so, more or 
less beaked at the top beyond the end of the valves, the beak consisting 
either of the conical style alone, or including a portion of the pod itself, 
with one or more seeds in it. Seeds globular, ovoid, or somewhat 
flattened, the cotyledons folded longitudinally over the radicle. 
A numerous genus, spread over Europe and northern and central Asia, 
comprising the Brassica and Sinapis of Linneeus, and divided by other 
botanists into from three to six or even more genera, variously defined, 
according to the peculiar views entertained by each, but all aptly united 
into one by Boissier. It is distinguished from Sisymbri vum and Barbarea 
essentially by the folded cotyledons, and in most cases by the beak of 
the pod. Even in the first two species, and in B. nigra, where the beak 
