94 



Botanical Section 



[PT I 



apex; its edges finely serrated, ribless above, and strongly keeled 

 throughout its length below. Ligule long, white, and membranous. 

 Auricles absent. Abundant throughout Britain. 



Fig. 90. Two aquatic grasses. Glycerin aquatica, Shi. 

 (left). Digraphis arundinacea, Trin. (right). 

 About J nat. size. 



Fig. 01. Two sea-coast 

 grasses, a. Spike of Ely- 

 iints arenarius. b. Spike- 

 like inflorescence of 

 Psamma arenaria. About 

 \ nat. size. 



Flowers late in May or early in June. Culms from two to 

 three feet high, the upper sheaths and blades of the culm very 

 harsh to the touch. The panicle consists of clusters of spikelets 

 arranged on contracted or shortened branches, thus giving it a 

 close, dense, heavy appearance. Spikelets three to five flowered. 



