148 CRASSULACE^E. [SEDUM. 



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

 pink. DISTRIB. W. Europe. 



5. DASYrHYi/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. Flowerless stems short, with rosulate leaves ; 

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

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

 Europe, N. Africa. . 



** Flowers yellow. 



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

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

 acuminate. Biting Stoneorop, Wall-pepper. 



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

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

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

 at the base, the gibbosity in coutact with the stem. Flowers -g- 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 J 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, Hud*. ; 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 

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

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

 close to the stem. Cymes 3-4 in. diam., branches scorpioid. Flowers f 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'eyans, Lej. ; 

 S. pruina'tum, Brot. VATJ. 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 ylauces'cens and vires'cens, represent shades 

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



