284 DROSERACE^. [part ii. 



they differ from leaves, except in size and shape, 

 I have not been able to learn. Even Dr. Lindley 

 in the last edition of his Introduction to Botany, 

 says, " What stipules really are is not well made 

 out." 



The Heartsease and the Violet differ also in 

 their habit of growth. The Violet is a creeping 

 plant with no stalks but those supporting the 

 flowers, while the Heartsease stands erect, with 

 a thick square stem, so strong, that, notwith- 

 standing its succulent nature, it be may trained 

 like a little tree. 



ORDER XXI. DROSERACE^— THE SUN-DEW TRIBE. 

 There are three genera in this tribe that ^re 

 well known: Z)?'6>5<?r«, the Sun-dew ; Dioncea mus- 

 czpw/a, Venus's Fly-trap; and Par Jiassia pahistris, 

 the Grass of Parnassus; all bog plants. The 

 species of the genus Drosera are remarkable 

 for the curious manner in which the leaves and 

 peduncles are coiled up when they first appear, 

 and in which they slowly unroll themselves as 

 they grow. They are also beautifully edged 

 with a sort of fringe of glandular red hairs, and 

 a fluid exudes from these glands which makes 

 them always appear as though covered with 

 dew. The common Sun-dew (D. rotundifolia) 

 is a British plant, with short roundish leaves ; 



