112 THE STORY OF PLANT LIFE 



Sea Rocket is in bloom between June and August. 

 It is a herbaceous annual, and is from i to 2 ft. in 

 height. 



The anthers and stigma are mature at the same 

 time. The stigma is below the anthers, so that 

 unless insects, which are not numerous on the sea 

 coast, visit the plant it is usually self-pollinated. 



The pods are indehiscent in the ordinary sense, 

 but are in two parts, the upper of which with one 

 seed falls when ripe near the plant. 



Cakile maritima. — In Fig. 17 note the entire 

 leaves, with few lobes, and those with few distant lobes. 

 The corymb shows the upper part in flower, the lower in 

 fruit, which is entire, ribbed when dry, and erect. 



Wild Radish {Raphanns Raphanistnim). 



Probably this plant, and the one also found by the 

 sea coast, is the origin of the garden radish, for 

 M. Carriere raised forms of different colour from the 

 seed of this plant, producing the long-rooted form in 

 light soil and the round-rooted radish on a stiff soil. 

 Pliny states the Greeks procured the two different 

 varieties by growing them in different soils. When 

 left to run wild these plants revert to the wild 

 state. The Wild Radish is found throughout the 

 British Isles. 



As a colonist it is a follower of man, found on 

 cultivated ground where cereals or root-crops are 

 grown. In the cornfield it is associated with Char- 



