30. CRASSULACE^E. 67 



2. SP^RGULA. Corn-Spurrey. 



S. AKVENSTS, L. A slender, much branched annual, with 

 ascending stems, 6 12 in. high. Le. linear, 1 2 in. long, fur- 

 rowed beneath, appearing as if whorled, but in 2 bundles of 6 8 

 le. Pet. white, about the same length as the cal. Ped. reflexed 

 after flowering. 



Very abundant. In corn fields on light soil. (B) A. 6 8. 



30.-CRASSULACEJE. 



1. COTYLEDON. 



C. UMBILICUS, Hud. Wall Pennywort, Navelwort. Le. mostly 

 radical, orbicular, peltate, concave, crenate. Fl. stem 6 12 in. 

 high, bearing a raceme of pendulous, yellowish green fl., with a 

 bract at the base of each. Cal. small. Cor. long, tubular. Plant 

 succulent. 



Common. On the islands at the mouth of the Firth, on rocks and walls. (A) P. 

 8. 



2. SEMPERVfVUJVL 



* 1. S. TECTORUM, L. Common House-leek. Leaves forming 

 globular tufts like large rosettes, fleshy, glabrous, ciliate. Flower- 

 ing stems thick, 1 ft. high. Fl. pink, sessile. Pet. 12 or more, 

 hairy on the margin. 



Walls and roofs of houses in several of the villages around Glasgow. P. 7. 



3. S^DUM. Stonecrop. 



A. Leaves broad, flat. 



1. S. RHODIOLA, DC. Rose-root. Rhizome thick, fleshy, 

 erect, 4 12 in. high, smell when drying is said to resemble roses. 

 Le. alternate, oblong or obovate, toothed towards the apex, 

 smooth, fleshy. Fl. dioecious, in dense corymbose cymes, yellow, 

 sometimes tinged with red. St. 8. Carp. 4. 



Wet Alpine rocks and cliffs by the sea. (H) P. 67. Hills above Loch Eck; 

 Glen Sannox, Arran, &c. 



2. S. TELEPHIUM, L. Orpine, Livelong. Stems hard at the 

 base, erect, 12 18 in. high, spotted. Lower le. obovate or 

 oblong, tapering to the base ; uppermost le. sessile, rounded at 

 the base, coarsely dentate, fleshy. Fl. purple, in dense, leafy, 

 corymbose cymes. St. 10, shorter than the pet. 



Frequent. Hedge banks and Avaste places. (E) P. 7 8. Cathcart; Partick; 

 Dumbarton Castle; Cumbrae, &c. 



B. Leaves nearly as thick as broad (subterete). 

 1. Flower white or reddish. 



3. S. A'NGLICUM, Huds. English-Stonecrop. Stems decum- 

 bent, much branched at the base. Le. ovate, fleshy, gibbous at 



