THE CRUCIFER FAMILY. 



Fine-leaved Sisymbrium. Sisymbrium Sophia, Linn. 

 (Fig. 70.) 



(Eng. Bot. t. 963. Flixweed.) 



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 lines long, on slender, 

 spreading pedicels, forming loose, ter- 

 minal, erect racemes. 



In waste places, by roadsides, etc., in 

 Europe and northern Asia, from the 

 Arctic Circle to the Mediterranean, the 

 Caucasus, and Himalaya, and in north- 

 ern America ; thinly scattered through 

 Britain. El. summer. 



Fig. 70. 



X. ALLIARIA. ALLIARIA. 



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

 with Erysimum ; differing from the former by the valves of the pod 

 with a prominent midrib, as in Erysimum; from the latter by white 

 flowers, and a more cylindrical pod ; from both by a peculiar habit of 

 foliage, and by the striate seed of which the short stalk is more dis- 

 tinctly expanded (within the pod) into a broad, white membrane. 



1. Common Alliaria. Alliaria officinalis, DC. (Fig. 71.) 

 (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 strong smell 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, cordate-ovate, or triangular, coarsely toothed, 2 to 3 inches 

 long and broad. Flower small and white. Pods on short, spreading 



