148 CRASSULACEJ2. [Sebum. 



top of the flowering stem, white or pink. Sepals obtuse, short. Carpels 

 pink. — Distrib. "W". Europe. 



S. dasyfhyi/lum, L. ; glandular-pubescent, glaucous, leaves on the 

 flowerless shoots mostly opposite subglobose or shortly ovoid, equal at the 

 base below. 

 Old walls, &c, naturalized, rare ; fl. June-July. — Loosely tufted, very glaucous 



and pink, much branched. Floioerless stems short, with rosulate leaves ; 



flowering 2 in., flexuous, slender. Leaves §-£ in. Cyme forked, few-fld. 



Flowers % in. diam. Petals often streaked with pink. — Distrib. W. and S. 



Europe, N. Africa. 



** Flowers yellow. 



0. S. a'cre, L. ; glabrous, leaves densely imbricate alternate erect terete 

 ovoid-oblong obtuse, sepals slightly gibbous at the base, petals lanceolate 

 acuminate. Bitinj Stonscrop, IVall-pspper. 



Rocks, walls, and sandy places, especially near tbe sea; ascends to 1,500 ft. in 

 Yorkshire; Ireland; Channel Islands; fl. June-July.— Tufts or cushions 

 3-10 in. diam. Stems 3-5 in. Leaves J-J in., obscurely 6-seriate, broadest 

 at the base, the gibbosity in contact with the stem. Flowers § in. diam., 

 subsessile, few, golden-yellow, proterandrous. Sepals obtuse, not half as 

 long as the petals. Anthers yellow. — Distrib. Europe, W. Asia, N. Africa, 

 W. Siberia. — Taste acrid ; is a vesicant, emetic and cathartic. 



S. sexangula're, L. ', glabrous, leaves cylindric spreading obtuse 

 gibbous at the base, sepals not gibbous at the base. 



Old walls in the E. of England*, not indigenous ; fl. July. — Stems loosely 

 tufted, flowerless with crowded leaves in about 6 rows ; flowering 3-6 in., 

 laxer, spreading or recurved with leaves f in. ; basal gibbosity of the leaf 

 acute, in contact with the stem. Cyme 1-2 in. diam., corymbose. Flowers 

 £ in. diam., subsessile, yellow. Sepals obtuse. Petals lanceolate, acute. — 

 Distrib. N. and Mid. Europe. 



7. S. rupes'tre, LTuds. ; glabrous, leaves linear-lanceolate acute 

 flattened gibbous at the base, sepals oblong not gibbous at the base. 



Rocks, S.W. England and Wales, rare ; Ireland ; Channel Islands (natural- 

 ized) ; fl. June-July. — Stems stout, loosely tufted, green or tinged with 

 piuk ; flowerless with closely rosulate leaves ; flowering 6-10 in., with sub- 

 erect scattered leaves. Leaves jp-1 in., acute or acuminate, the gibbosity 

 close to the stem. Cymes 3-4 in. diam., branches scorpioid. Flowers § in. 

 diam., pedicelled, golden-yellow. Sepals obtuse. Petals lanceolate, acute. 

 Anthers yellow. — Distrib. From Belgium southd. 



S. rupes'tre proper; glaucous, cyme rather flat-topped. S. el'er/ans, Lej. ; 

 S. pruina'tum, Brot. — Var. ma'jor ; stout, 6-12 in., leaves f-1 in., cyme 3-5 

 in. diam. Cheddar Cliffs. — Var. mi' nor ; smaller and more slender. 

 Bristol, Shropshire, "Wales, indigenous ; elsewhere in England an escape. 



Sub-sp. S. Forsteria'num, Sm. ; more slender, cymes rather round topped 

 sometimes capitate. Varieties glauces'cens and vires'ccns, represent shades 

 of colour in two forms. Wet rocks ; Somerset, Gloster, Salop, Wales. 



