ACCOUNT OF GENUS SEDUM AS FOUND IN CULTIVATION. 191 



green or whitish, dotted red below on the inner face, at first erect, later slightly 

 spreading, tapering into the slender short styles, equalling the stamens. 



Flowers late June. Hardy. 



Habitat. — Caucasus region. 



One of the most constant points of difference between this species 

 and its close ally 5. Alberii (at least so far as the plants which I 

 have seen are concerned) is not mentioned by Kegel in describing 

 the latter species, namely, that in Alberii the forked branches of the 

 cyme bear no flowers (only leaves) between the flower which occupies 

 the primary fork and that which occupies the secondary fork, while 

 in gracile flowers are borne all the way from the primary fork to the 

 end of the simple branches. 



Rare in cultivation. I received it from Kegel and Kesselring in 

 Petrograd, and obtained it also at Kew (as glaciale) and Bremen. 



84. Sedum Albert! Kegel (fig. 108). 



S. Alberii Kegel in "Acta Horti Petropol.," 6, 299, 1880. 



A small plant closely resembling 5. gracile C. A. Meyer, from which 

 it differs in its more creeping stem not clothed with old leaves and 

 inflorescence of (mostly 3) semi-erect forked branches, devoid of 

 flowers between the primary and secondary forks, whereas in S. 

 gracile the branches (mostly 2) are unbranched and spread almost 

 horizontally, or are recurved, and bear flowers throughout their length. 



Description. — A small, glabrous, evergreen perennial. Stems procumbent, 

 creeping, much branched, terete, red, shining, bare below, branches ascending, very 

 leafy. Flower-stem i J to 2 inches high, ascending, usually unbranched, with larger, 

 less dense leaves. Leaves linear-oblong, blunt, up to -^ inch long on the flower- 

 stems, smaller on the barren shoots, flattish on face, rounded on back, red- 

 dotted, tips minutely papillose, prolonged at base into a short blunt spur. In- 

 florescence of (usually) 3 semi-erect, leafy, forked branches, with a flower in the 

 primary and secondary forks, but no flowers, only leaves, on the branches between 

 these points ; flowers 25-30 in all. Buds ovate, acute. Flowers subsessile, 

 yV inch across. Sepals elliptic, rather acute, fleshy, green, resembling the leaves, 

 free almost to the base. Petals broadly lanceolate, acute or acuminate, patent, 

 thrice the sepals, white on face, often dotted red on back, with a greenish keel. 

 Stamens shorter than petals, filaments white, anthers red-purple. Scales small, 

 pale, reddish, cuneate, retuse or emarginate. Carpels pale green or whitish, 

 dotted red near the base of the inner face, at first erect, later spreading, equalling 

 the stamens, styles slender, short. 



Flowers June. Hardy. 



Habitat. — Eastern Turkestan. 



Keceived from Messrs. Kegel and Kesselring of Petrograd as 

 S. gracile (they also sent true gracile). Plants obtained under the 

 name S. Alberii from the same firm and a number of British gardens 

 were all forms of 5. album. The plant illustrated in " Gartenflora " 

 (tab. 1019, fig. 2) as S. Alberii is a totally different thing. 



B. Flowers Red or Purple. 



(a) Sub-shrub. 



Here belongs only one species, the remarkable 5. oxypetalum of 

 Mexico. 



