Sedum.~\ XXXV. CRASSULACE^l. 157 
Rocks, walls, and roofs of houses; in the counties of Middlesex, 
Worcester, Suffolk, Somerset, Warwick, and Northampton. Forfar 
and Glamis, Scotland. 2 ). 7,8 Stems prostrate below, the flower- 
ing-stem only erect, 3 — 5 inches high. Leaves pale glaucous-green, 
sometimes tinged with red. Flowers crowded white or tinged with 
rose-colour. 
6. S. villusum L. ( hairy S .) ; leaves scattered linear flattened 
above, and as well as the peduncles and erect stems glandular 
pubescent, petals ovate acute. E. B. t. 394. 
Stony and moist places by the sides of rills ; frequent in the N. of 
England and Scotland, especially the subalpine parts. 0 or $ ? 6, 7. 
— Stem 3 — 4 inches high, reddish purple. Leaves on the short barren 
shoots almost exactly cylindrical. Flowers few, of a pale rose-colour. 
*** Leaves subterete. Flowers yellow. 
7. S. acre L. ( biting S., or Wall-pepper ) ; leaves erect alter- 
nate ovate gibbous fleshy produced at the base, cymes trifid 
glabrous leafy, sepals obtuse gibbous at the base, petals acute. 
E. B. t. 839. 
Walls, rocks, and sandy ground, frequent. 2 /.. 6, 7. — Distin- 
guished among our yellow.flowered species, by its upright short and 
very succulent leaves, closely imbricated on the barren shoots. Very 
biting when chewed, and hence its name of Wall-pepper. 
8. S. *sexangul<ire L. ( tasteless yellow S .) ; leaves generally 
in 6 rows whorled on the barren shoots cylindrical fleshy spread- 
ing produced at the base, cymes trifid glabrous, sepals lanceo- 
late acute not gibbous, petals acute. E. B. t. 1946. 
Old walls in the east of England, rare. Isle of Sheppey ; Green- 
wich Park; Cambridgeshire; at Old Saruin, Yorkshire. 74. 7. — 
Well distinguished from the last by its spreading, larger and slender 
leaves, and by their insertion. 
9. S .*reflexum L. (crooked yellow S.) ; leaves terete awl- 
shaped scattered spurred at the base, flowers cymose, segments 
of the calyx lanceolate slightly acute. E. B. t. 695. — S. glau- 
cum Donn. E. B. t. 2477. 
Walls, roofs of houses and thatched buildings, frequent. 74. 7, 8. 
— Sterile branches with thickly placed leaves, often reflexed. Flower- 
ing-stems 6 — 8 inches high. Cyme large yellow. Flowers numerous 
often with 6 petals and 12 stamens. Very similar to the two follow- 
ing species. If the true S. glaucum (described as having the leaves 
more slender, glaucous, and not recurved) be distinct from this, even 
as a variety, it has not come under our observation : it is said to grow 
on rough hills near Mildenhall, Suffolk, and Sunday’s Well and Glas- 
keen, Ireland. 
10. S. rupestre L. (St. Vincent's -Bock > S'.); leaves linear- 
lanceolate flattened glaucous produced at the base, those of the 
