CLASS X. ORDER IV.J SEDUM. GG7 



Englisli Botany, t. 170.— English Flora, vol. ii. p. 322.— Hooker, 

 British Flora, vol. i. p. 21.3. — Lindley, Synopsis, p. 65.— S. elegans, 

 Lejeum. 



This by De Candolle is considered a variety of S. rejiexum, from 

 which it docs not appear to materially differ, with the exception of the 

 cymes being larger, more branched, and the flowers more numerous and 

 crowded, and in the segments of the calyx being roundish obtuse. 



Habitat. — St. Vincent's Rock, Bristol ; Chedder Rocks, Somerset- 

 shire ; and old walls about Darlington, Yorkshire. — Mr. E. Robson. 



Perennial ; flowering in July. 



11. S. Forsleri'anium, Sm. (Fig. 7G1.) Welsh Rock Stonecrop. 

 " Leaves spurred at the base, those of the branches semi-cylindrical, 

 bluntish, pointed, spreading, in many rows; flowers cymose ; segments 

 of the calyx elliptical, obtuse." 



English Botany, t. 1802. — English Flora, vol. ii. p. 322. — Hooker, 

 British Flora, vol. i. p. 213. — Lindley, Synopsis, p. 65. 



" Very distinct from S. rvpesire, with which it has been confounded, 

 in the bright green colour of its foliage; but the short rosaceous tufts 

 of spreading leaves, which are blunt, with a small bristly point, more 

 essentially distinguish it. The flowers grow in a true cyme, all the 

 primary stalks springing from one point. The calyx in this and the 

 last species has more shallow, short, elliptical, and obtuse segments, 

 than either of the two preceding." 



Habitat. — Rocks in Wales, at the fall of the Rhydell, Cardiganshire. 

 — Mr. E. Forster. At Hisvae, valley of Nant-phrancon. — Dr. 

 Richardson. Little Ormeshead. — Mr. W. Wilson. 

 Perennial ; flowering in June and July. 



This species we only know from cultivated plants and dried speci- 

 mens, in both of which conditions it is difficult to determine upon the 

 distinguishing characters of so nearly allied species. We have, there- 

 fore, given the specific character and description of Smith; and it may 

 be further remarked, that Mr. W. Wilson thinks that "perhaps the 

 compact hemispherical or round-topped cyme is the best mark by 

 which to distinguish this from 5. refiexum." 



Many of the species of yellow Slouecrops of this section, the student 

 will observe, are very difficult to distinguish from each other, as they, 

 under various circumstances, assume such different appearances, from 

 the influence which peculiarities in the soil and a shady or exposed 

 situation has upon them ; for they flourish well either upon the dripping 

 rock, or within the spray of the mountain stream, beneath the shade of 

 trees, or exposed to the vicissitudes of every change on the tops of 

 walls, ruined buildings, crags, &c. ; in accommodating itself to these 

 varieties of existence it is not surprising the plant should assume dif- 

 ferent appearances. While the student is engaged in inquiries about 

 the specihc characters, the phy^^iological structure of the plants will 

 doubtless add much of interest to his investigations, for curious indeed 



