STONECROP TRIBE 



103 



I. C. littoralis 

 wort). A small but pretty plant, 

 with slender, spreading stems, 

 which lie quite prostrate, very 

 narrow, strap-shaped, glaucous 

 leaves and tufts of small white 

 flowers. It grows in two or three 

 places on the seashore of Devon, 

 and is very abundant on the 

 banks of the Loe Pool, near 

 Helston, Cornwall. Very rare. 

 Fl. August to October. Annual. 



1. Corrigiola (Strap-wort) 

 (Sand Strap- 



Corrigiola Littoralis 

 (Sand Strap-wort) 





2. Herxiaria (Rupture-wort) 



1. H. glabra (Smooth Rupture-wort). A small, prostrate plant, 

 with much of the habit of Wild Thyme ; abundant in the neigh- 

 bourhood of the Lizard Point, Cornwall, but very rare elsewhere. 

 Though called smooth, the leaves are always more or less 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. 

 A form with narrow, hairy leaves (H. hirsuta) is found at Christ- 

 church, in Hampshire. Fl. July to September. Perennial. 



3. Illecebrum (Knot-grass) 



j 1. /. verticillatum (Whorled Knot- 



1. 

 grass).- 



Jfi 



Illecebrum Verticillatum 

 (Whorled Knot-grass) 



-A pretty plant with slender, 

 %Tm?vsi tangled stems of a red tint, glaucous, 

 & #Tv\ sess ile leaves, and axillary whorls of 

 white flowers, which are remarkable 

 for their thickened calyx-leaves, termi- 

 nating in a soft point. In boggy 

 ground and standing water, among 

 other aquatic plants ; only in Cornwall, 

 Devonshire, and the Channel Islands. 

 Fl. July to September ^erennial. 



Natural Order XXXIII 



CRASSULACEjE. The Stonecrop Tribe 



Sepals 3-20, more or less united at the base ; petals equal in 

 number to the sepals, inserted in the bottom of the calyx ; stamens 

 the same or twice as many, in which latter case those opposite the 



