DECANDRIA PENTAGYNIA. 99 



* * Leaves tumid or somewhat cylindrical. 



2. S. angUcum^ stems tufted, much branched) 2 or 3 inches 

 high ; leaves ovate, thick, mostly alternate, spurred at the base ; 

 cyme of 2 smooth branches ; flowers white, speckled with red. 

 English Stonecrap. 



Hob. Heugh, Holy Island, and about the Castle, Thomp. 

 July. O 



This species is said to be annual, but Mr NEILL finds it 

 will endure for two years, though no more, in a flower-pot. 



3. S. acre, stems tufted, branched ; leaves alternate, nearly 

 ovate, thick, tumid, spurred at the base; cyme of 3 smooth 

 branches, leafy ; flowers golden yellow. Biting Stonecrop. 



Hob. On walls and rocks, common, June. If. 



4. S. villosum, pubescent, viscid ; stem erect, spotted with red ; 

 leaves alternate, linear, flattened ; flowers corymbose, rose- 

 coloured. Hairy Stonecrop. 



Hab. Bogs and moist rocks. By rivulets (and in bogs) at 

 the foot of Cheviot, Winch. Basaltic heights between 

 Belford and Bamborough, Thomp. June. ^ 



5. S. reflexuifo) leaves awl-shaped, scattered, spurred at the 

 base, the lowermost recurved ; flowers cymose, yellow ; segments 

 of the calyx ovate. Yellow Stonecrop. 



Hab. On walls rare. On a dike near Kyloe Manse ; and 

 at Easington- July. If. 



The tenacity with which this species retains life is illustrat- 

 ed by the following fact, t pressed strongly between dry 

 papers a specimen without radicles, and the flowers of 

 which were not in the least expanded. The papers were 

 changed every three or four days ; but at the end of as 

 many weeks, so far was life from being extinct, that it 

 had protruded many white radicle fibres from one to two 

 inches long, and the flowers had fully expanded them- 

 selves. 



138. OXALIS. 



1. O. Acetosella, root of many scaly joints; leaves ternate, in- 

 versely heart-shaped, hairy; stalks radical, single-flowered; 



E2 



