206 DECANDRIA PENTAGTNIA. QcL. X. 



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. refitxum. Crooked Yellow Stonecrop. Leaves awl-shaped, scat- 

 tered, the lower recurved ; flowers cymose ; segments of the calyx 



egg-shaped. Root fibrous : stems rooting at the lower part : leaves 



tapering to a bristly point: flowers bright-yellow, numerous. Peren- 

 nial : flowers in July : grows on walls and roofs : common. Eng. Bot. 

 vol. xxii. pi. 1578. Eng. Fl. vol. ii. p. 320. 699. 



9. S. glaucum. Glaucous Yellow Stonecrop. Leaves awl-shaped, scat- 

 tered, 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; seg- 

 ments of the calyx elliptical, obtuse. Flowers yellow. 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, oblong, 

 five-cornered. Styles five, thread-shaped ; stigmas obtuse, downy. 

 Capsule membranous, five-cornered, five-celled. Seeds roundish, 

 polished. Named from oxys, acid. 236. 



1. O. Acetostlla. Common Wood-Sorrel. Leaves all radical, ternate, 



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. 0. corniculdta. Yellow 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; the claws as long as the 



