THALAMIFLOR^ 113 



lock, which it closely resembles, except in the 

 character of the pods. Poppies, Corn Buttercup, 

 Fool's Parsley, Venus' Comb, Blue Sherardia, etc., 

 are found in association with it. 



The habit is similar to that of Charlock, cabbage- 

 like. The root is slender. The stem is stout, erect, 

 or spreading, branched, the base sparingly hairy. 

 The leaves are simple, lyrate, the lobes larger 

 upwards, pinnate, the segments few and distant, 

 inversely ovate or oblong, coarsely toothed, rough, 

 with short hairs. The upper leaves are narrow and 

 entire. 



The flowers are veined, distinguishing them from 

 those of Charlock, lilac, white or straw-coloured, or 

 white with lilac veins, light-yellow with darker veins. 

 The calyx is erect. The pods are awl-like, or cylin- 

 drical when fresh, slightly narrowed at the joints, or 

 moniliform, the beak flattened, awl-like, and longer 

 than the pod, the beak formed by the style. 



When dry the pods are longitudinally furrowed, 

 and form a lomentum or schizocarp, breaking up 

 into one-seeded portions. The seed is oblong, thick, 

 narrow at one end. There is no endosperm the 

 embryo filling the seed. 



The Wild Radish flowers in June and July. It is 

 an annual or biennial (the garden radish is biennial), 

 and is from i to 2 ft. high. 



There are four nectaries or honey-glands, as in 

 Brassica. The anthers and stigma ripen together. 

 The stigma is on a level with the short stamens. 



8 



