206 DECAISDRIA PENTAGYNIA. [ CL. X. 



branches. Root fibrous : stems branched, from two to five 



inches high : flowers yellow : larger than the last, and insipid. 

 Perennial : flowers in July : grows on walls in England : rare. 

 Eng. Bot. vol. xxviii. pi. 1946. Eng. Fl. vol. ii. p. 318. 698. 



8. S. reflexum. Crooked Yellow Stonecrop. Leaves awl-shaped, 

 scattered ; the lower recurved ; flowers cymose ; segments of the 



calyx egg-shaped. Koot fibrous : stems rooting at the lower 



part : leaves tapering to a bristly point : flowers bright-yellow, 

 numerous. Perennial : flowers in July : grows on walls and roofs : 

 common. Eng. Bot. vol. xxii. pi. 1578. Eng. .FY. vol. ii. p. 320. 699. 



9. S. glaiicum. Glaucous Yellow Stonecrop. Leaves awl-shaped, 

 scattered, glaucous, those of the branches thread-shaped ; 



flowers cymose ; segments of the calyx lance-shaped. Differs 



from the last in having more slender leaves and a more glaucous 

 colour. Perennial : flowers in July and August : grows on walls 

 and sandy ground : rare. Eng. Bot. vol. xxxv. pi. 2477. Eng. Fl. 

 vol. ii. p. 321. 700. 



10. S. rupestre. Bristol Stonecrop. Leaves glaucous, those of 

 the branches awl-shaped, erect, in five rows ; flowers cymose ; 



segments of the calyx elliptical. Flowers yellow. Perennial : 



flowers in July : found on St. Vincent's Rocks at Bristol, and a 

 few other places in England. Eng. Bot. vol. iii. pi. 170. Eng. Fl. 

 vol. ii. p. 322. 701. 



11. S. Forsteridnum. Welsh Rock Stonecrop. Leaves of the 

 branches semi-cylindrical, bluntish, pointed in many rows ; flowers 

 cymose ; segments of the calyx elliptical, obtuse. Flowers yel- 

 low. Perennial: flowers in July : grows on rocks in Wales : rare. 

 Eng. Bot. vol. xxvi. pi. 1802. Eng. Fl. vol. ii. p. 322. 702. 



16. O'XALIS. WOOD-SORREL. 



Calyx inferior, deeply divided into five acute, permanent seg- 

 ments. Petals five, much longer than the calyx, obtuse, con- 

 nected laterally by their claws. Filaments hair-like, erect, the 

 five outer shorter ; anthers roundish. Germen superior, ob- 

 long, five-cornered. Styles five, thread-shaped ; stigmas ob- 

 tuse, downy. Capsule membranous, five-cornered, five-celled. 

 Seeds roundish, polished. Named from oxys, acid. 236. 



1. O. Acetose'lla. Common Wood-Sorrel. Leaves all radical, ter- 

 nate, inversely heart-shaped, hairy; scape single-flowered; root 



scaly.. Leaflets bright-green, often purplish beneath : bracteas 



two, opposite : petals white, streaked with purplish veins : the 

 whole plant is intensely acid. Perennial : flowers in April and 

 May : grows in woods and shady places : common. Eng. Bot. vol. 

 xi. pi. 762. Eng. Fl. vol. ii. p. 323. 703. 



2. O. corniculdta. Yellotv Procumbent Wood-Sorrel. Stem 

 branched, procumbent ; flowers in small umbels ; stipules united 



to the base of the flower-stalks. Root fibrous : stem spreading 



on the ground, often rooting : petals yellow, strongly combined. 

 Annual: flowers from May to October: grows in shady waste 

 ground in the south of England: rare. Eng. Bot.vol. xxiv. pi. 

 1726. Eng. Fl. vol. ii. p. 325. 704. 



17. AGROSTE'MMA. COCKLE. 



Calyx inferior, of one leaf, tubular, leathery, strongly ribbed, 

 five-toothed, permanent. Petals five j the claws as long as the 



