CRASSULACEyE 321 



S. Anacampseros. Stems spreading and ascending, 8-10 

 in., surrounded with thick, fleshy leaves, rounded and 

 flat, and forming on the upper part of the stem close, 

 cylindrical rosettes of glaucous green; flowers small, 

 reddish, in a flattened, compact cluster. July-August. 

 Rocks of granitic Alps (1400-2000 m.). 



S. alpestre. Straggling, glabrous; stems sometimes 8 in., 

 simple or a little branched; leaves oblong-ovate, cylindri- 

 cal ; flowers pale yellow, 2-5 in close corymb. July-August. 

 Rocks and detritus of the granitic Alps. 



S. album* (pain de souris) is the familiar succulent, 

 common on old walls, stone-heaps in the lowlands, and 

 climbs up to the alpine zone, always beautifying parched 

 and rocky places. Stems slender, zigzagging over the 

 rock and forming tufts of ovate, cylindric leaves, decked 

 with flowers of rosy white, in corymbose cymes, more 

 or less loose. S. acre* (wall-pepper, Vermiculaire) is a 

 dwarf Orpine, with bright-yellow flowers, growing in 

 cushiony tufts and forming thick swards of short, tri- 

 angular leaves, and gay with brilliant golden flowers, 

 arranged in 2-3 spikes gathered in a little corymb. Found 

 spreading over walls, rocks and house-roofs throughout 

 Switzerland. 



In the higher alpine regions the small, annual species 

 S. annuum and 5. air alum are to be found. The charac- 

 teristics are of the former flexuous, often branched 

 stems, with short, narrow leaves and terminated by a 

 divided cyme of tiny, greenish-yellow flowers; of the sec- 

 ond stems shorter, thicker ; leaves very many, imbricate, 

 clear green passing afterwards to reddish; flowers whitish 

 with a green central line. 



S. vilhsum* is a delicate, little biennial; foliage brownish, 

 pubescent, glandular; beautiful bright rose flowers in an 

 irregular corymb. Haunts moist places in the valleys of 



