230 PARONYCHIACE^E. 



strongly fringed at the edges. The flowers are green, 

 and grow in sessile tufts in the axils of the leaves, or, 

 not unfrequently, crowded into leafy spikes. Some 

 botanists consider the more hairy variety a distinct 

 species, but without sufficient reason; as the- plant 

 assumes various forms, according to soil, and to its being 

 more or less exposed. Fl. July September. Perennial. 



\ 



ILL^CEBRUM VERTiciLLATUM (Whorled Knot-grass^.. 



3. ILLECEBRUM (Knot-grass). 



1. /. verticillatum (Whorled Knot-grass). In boggy 

 ground, and standing water, among other aquatic plants ; 

 in Cornwall, not uncommon ; much rarer in Devonshire. 

 A pretty plant, with slender tangled stems, of a red tint, 

 glaucous, sessile leaves, and axillary whorls of white 

 flowers, which are remarkable for their thickened calyx- 

 leaves terminating in a soft point. Fl. July Septem- 

 ber. Perennial. 



4. POLYCARPON (All-seed). 



1. P. tetraphyllum (Four-leaved All-seed). ^-On the 

 southern coast, but far from common. A small plant, 

 with prostrate, branched stems, and many minute greenish- 



