SEDI-M.] CRASSULACE^E. 137 



SECTION 2. Cepse'a. Annual or biennial. Stem simple. Leaves sub- 

 cylindric. 



3. S. villo'sum, L. ; glandular-pubescent, leaves sessile 4-cylindric. 

 Bogs and marshes in hilly districts from York and Westmoreland to 



Argyle and Elgin, ascending to 2,000 ft. in Yorkshire ; absent from 

 Ireland ; fl. June-July. Biennial. Stem with a tuft of leaves the first 

 year, lengthening in the second, then slender, 3-6 in., and flowering. 

 Leaves J-^ in., scattered, linear, obtuse. Cyme few-flowered, subscorpioid. 

 Flowers J in. diam., white or purplish. Sepals ovate, obtuse Petals broad, 

 acute. DISTRIB. W. Europe (Arctic), Norway to Italy and Hungary, Green- 

 land. 



SECTION 3. Se'dnm proper. Perennial. Stems branched, with many 

 flowerless leafy prostrate or ascending shoots. Leaves cylindric or - 

 cyliudric. 



* Flowers white. 



4. S. album, L. ; glabrous or slightly glandular, leaves alternate sub- 

 cylindric oblong contracted at the base, petals oblong-lanceolate. 

 Malvern Hills, Gloucestershire, and Somerset, indigenous (Syme) ; a garden 



escape on walls from Forfar southwards ; an alien, Watson ; fl. July- Aug. 

 Flotcerless stems prostrate ; flowering erect, 6-10 in. Leaves - in., obtuse, 

 bright green. Cyme corymbose, glabrous. Flowers J-i in. cfiam. Petals 

 twice as large as the green sepals. DISTRIB. Europe, Siberia. 

 VAR. 1, teretifo'lium, Haw. (sp.); leaves much flattened above, sepals and petals 

 obtuse. VAR. 2, micrarithum, Bast.; leaves flattened on both surfaces, 

 sepals rounder, petals more acute. Naturalized in Sussex, Ireland, &c. 



5. S. ang'licum, L. ; glabrous, leaves alternate ovoid-oblong gibbous 

 at the base below, petals lanceolate acuminate keeled. 



Rocks and banks, chiefly by the sea on the W. coasts, but ascending to 3,300 ft. 

 in N. Wales ; all round Ireland ; fl. June-Aug. Tufts matted, pale green 

 or reddish. Flowering stems 1-2 in., ascending, leafy. Leaves -^ in., 

 crowded, tumid at the base> Cymes short, scorpioid. Flowers ^ in. diam., 

 few, crowded at the top of the flowering stem, white, or pink. Sepals obtuse, 

 short. Carpels pink. DISTRIB. W. Europe. 



5. DASYPHYL'LUM, L. glandular-pubescent, glaucous, leaves on the 

 flowerless shoots mostly opposite subglobose or shortly ovoid equal at the 

 base below. 



Old walls, &c. in Mid. and S. England ; Wales and Scotland, rare ; an alien, 

 \l'n f.-:rn, ; fl. June-July. Loosely tufted, very glaucous and pink, much 

 branched. Flowerless stems short, with rosulate leaves ; flowering 2 in., flexu- 

 ous, slender. Leaves |- in. Ct/me forked, few-flowered. Flowers % in. diam. 

 Petals often streaked with pink. DISTRIB. S.W. and S. Europe. 



** Flowers yellow. 



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

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

 acuminate. Biting Stone-crop, Wall-pepper. 



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

 Yorkshire ; fl. June-July. Tufts or cushions 3-10 in. diam. Stem* 3-5 in. 

 L "'.- - in., obscurely 6-seriate, broadest at the base, gibbosity in contact 



