UMBELLIFERJE. 



Ill 



almost circular transverse section. The 

 the form of whitish prismatic columns ; 

 more prominent. The vittse 

 are thin and solitary, and the 

 ridges may contain some ru- 

 dimentary ones ; the slender 

 carpophore is bipartite ; the 

 face of the seed flat. J^thusa 

 is an annual of Europe and 

 Northern Asia, with a fetid 

 odour and decompound and 

 ternatipinnate leaves. Its 

 compound, terminal and op- 

 positifolious umbels have 

 involucres formed of a single 

 or of a very few bracts (which may be 

 involucels formed of a few (often three) 



primary ridges project in 

 the marginal are a little 



^thusa Cynapiwn. 



106. Long. sect, of flower (f). 



completely wanting), and 

 pointed setiform bracteoles 



JEthusa Cynapium. 



Fig. 107. Fruit (f). 



Fig. 108. Trans, sect, of fruit (^f). 



situated at the outer side of the inflorescence and descending to dis- 

 appear at a certain stage. 



Crithmum maritimiim (fig. 109, 110), a perennial, glabrous herb, 

 common on the sea shores of Europe, the Mediterranean and the 



