112 



X AT URAL HISTORY OF PLANTS. 



north-western African isles, has a fruit resembling that of jEthusa, 

 larger and a little more compressed. Not only the five angular 

 ridges of each mericarp, but also the greater part of its thickness, 

 consist of suberose tissue (here light and porous). The vittae, 



Crit/imum maritimnm. 



Fig. 109. Fruit (f). 



Fig. 110. Trans, sect, of fruit {^f) 



Pappea capensis. 



indefinite in number, are confined to the deep bed of the endocarp, 

 and are so exactly fitted to the seed that (though not belonging to it) 

 they remain attached on the separation of the pericarp. Crithmum 

 has fleshy decompound-ternatipinnate leaves, and numerous bracts in 

 its involucres and involucels. 

 Phellopterus is also a littoral plant found in Japan, the Corea and 



the Loo-choo isles. It is a pilose herb with 

 large dentelate leaf-segments. Its fruit, 

 nearly pear-shaped, has a transverse section 

 in form nearly that of Crithmum. The 

 primary ridges are dilated to thick wedge- 

 like wings and the numerous vittae also fit 

 to the seed, the face of which is concave. 

 The flowers, united in compound umbels, 

 bristle with hairs and have subulate un- 

 equally elongate sepals. 



Here are somewhat doubtfully placed two 

 abnormal monotypic genera, very different 

 from each other : Pappca and Thccocarpiis, 

 The former {^g. Ill) is a small herbaceous plant from the Cape of 



Fij 



111. Ventral face of 

 mericarp ff). 



