88 THE CETJCIFEE FAMILY. 



ceolate, slightly tootlied lobes, the terminal one fiom 1 to 1^ inches long, 

 the others smaller, often cm-ved backwards towards the stem ; the upper 

 leaves sometimes undivided and hastate. Flowers vei-y small and yellow. 

 Pods about 6 hues long, thick at the base, tapering to the point, more or 

 less hau-y, almost sessile, and closely pressed agaiast the axis, in long, 

 slender racemes, the midribs of the valves almost as prominent as in 

 Hrysimwin. 



In waste places, and by roadsides, common throughout Europe and 

 Russian Asia, except the extreme north. Abundant in Britain, excepting 

 the northern extremity of Scotland. Fl. s^tmmer. 



2. Broad Sisymbrium. Sisymbrium Irio, Linn. 

 (Eng. "Bot. t. 1631. London Rocket.) 



An erect annual, with a hard stem, a foot high or more, and glabrous or 

 nearly so. Leaves deeply pinnatifid or pinnate, the lobes or segments 

 lanceolate, more numerous and larger than in the common S. Flowers 

 small and yellow. Pods on more or less spreading pedicels, Ij to 2 inches 

 long, often all turned to one gide, forming a dense, erect raceme. 



In waste places, and by roadsides, in central and southern Europe to 

 the Caucasus. Rare in Britain, and chiefly recorded from the neighbour- 

 hood of London, Berwick, Dublin, and some other towns. Fl. summer. 



8. Fine-leaved Sisymbrium. Sisymbrium Sophia, Linn. 

 (Eng. Bot. t. 963. FUxweed.) 



An erect annual, a foot high or rather more, not so coarse as the two 

 last, and somewhat hoary with a very short down. Leaves two or three 

 times divided into numerous short linear segments. Flowers small and 

 yellow. Pods slender and glabrous, 9 to 12 hnes long, on slender, spread- 

 ing pedicels, foi-ming loose, terminal, erect racemes. 



In waste places, by roadsides, etc., in Europe and northern Asia, from 

 the Arctic Cu-cle to the Mediten-anean, the Caucasus, and Himalaya ; thinly 

 scattered through Britain. Fl. summer. 



X. AIiLIAItlA. ALLIAEIA. 



A single species, associated by some with Sisymirium, by others with 

 Erysimum ; differing from the former by the valves of the pod, with a pro- 

 minent midrib, as in Erysimum ; from the latter by white flowers, and a 

 jnore cyhndrical pod ; from both by a peculiar habit of foHage, and by the 

 short stalk of the seeds expanded (within the pod) into a broad, white 

 membrane. 



1. Common Alliaria. Alliaria officinalis, DC. 



{Erysimum Alliaria, Eng. Bot. t. 796. Garlic mustard. Sauce-alone.) 

 An erect annual or biennial, or sometimes of longer duration, 1 to 3 

 feet high, emitting a stroTig smeU of garlic when rubbed, glabrous, or with 

 a few long hairs on the stem and the edges of the leaves. Lower leaves on 

 long stalks, orbicular and crenate ; those of the stem on shorter stalks, cor- 

 date, ovate or triangular, coarsely toothed, 2 to 3 inches long and broad. 

 Flower small and white. Pods on short, spreading stalks, stiff and gla- 

 brous, 1 to li inches long, nearly cylindrical, but with a very prominent 

 midi'ib on each valve. 



