KNOT-GRASS TRIBE. 



229 



6. SPERGULA (Spurrey). Petals ovate, entire, as large 

 as the calyx; styles 5, alternate with, the sepals. (Name 

 from the Latin spargo, to scatter, the genus being widely 

 diffused.) 



coRRiofoLA LITTORALIS (Sand Strapworf). 



1. CORRIGIOLA (Strapwort). 



1. C. littordlis (Sand Strap wort). A small but pretty 

 plant, with slender spreading stems, which lie quite 

 prostrate, very narrow strap-shaped leaves, of a glaucous 

 hue, and tufts of small white flowers. It grows in two 

 or three places on the sea-shore of Devon, and is very 

 abundant on the banks of the Loe Pool, near Helston, 

 Cornwall. Fl. August October. Annual. 



2. HERNIARIA (Rupture-wort}. 



1. H. glabra (Smooth Eupture-wort). A small pro- 

 strate plant, with much of the habit of "Wild Thyme ; 

 abundant in the neighbourhood of the Lizard Point, 

 Cornwall, but very rare elsewhere. Though called smooth, 

 the leaves are always more or less hairy, and sometimes 



