7* 



crassulAce^e 



and sometimes glaucous leaves ; flowers often 6-merous, bright or 

 pale yellow. — Walls and dry banks ; not uncommon, but seldom, 

 if ever, indigenous. — Fl. July, August. Perennial. 



10. S. rupestre (Rock Stonecrop), an allied species, with 

 densely imbricated, adpressed, glaucous leaves, slightly flattened, 

 and flowers in corymbose cymes, occurs wild on limestone at St. 

 Vincent's Rocks, Bristol ; Cheddar ; and the Great Orme's Head ; 

 and elsewhere generally as an escape. — Fl. June, July. Perennial. 



ii. S. Forsteridnum 

 (Welsh Stonecrop), a 

 species very closely 

 allied to the preceding, 

 but with bright green, 

 not glaucous leaves 

 and flowers in round- 

 topped or capitate 

 cymes, grows on wet 

 rocks in Wales, Shrop- 

 shire, and Somerset. — 

 Fl. June, July. Peren 

 nial. 



*4. SEMPERVfvUM 



(House-leek). — Suc- 

 culent plants with 

 dense rosettes of ses- 

 sile radical leaves, giv- 

 ing off offsets from 

 their axils ; flowers in 

 branched cymes, 6 — 

 20-merous ; stamens in 

 2 whorls, the inner 

 usually barren ; hypo- 

 gynous scales fringed ; 

 follicles many-seeded. 

 (Name from the Latin semper, always, vivo, I live.) 



i.* S. tectbrum (Common House-leek). — A common but 

 scarcely indigenous plant, growing on the roofs of cottages and 

 outhouses. The leaves are thick and juicy, edged with red-purple, 

 ciliate, mucronate, and in compact rosettes. The dull red-purple 

 flowers are in scorpioid cymes, and are usually 12-merous. The 

 inner whorl of stamens frequently have anthers containing ovules, 

 like those in the carpels, which, however, never mature as seeds. 

 The leaves contain malic acid, — Fl. June, July. Perennial. 



SEMPERVJVUM TECTORUM (C< 



House-leek). 



