138 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



Sepals large, very fleshy, oblong, blunt, rather unequal, green dotted with red, 

 resembling the upper leaves, equalling the erect part of the corolla. Petals erect 

 below, wide-spreading above, oblong-obovate, obtuse, apiculate, white, with a 

 greenish keel on upper part of back and a groove on face. Stamens shorter than 

 the petals, spreading, filaments white, anthers purple. Scales spreading, cuneate, 





Fig. 72. — 5. Wrightii A. Gray. 



as broad as long, yellow. Carpels white, purple on the inner face, erect, with 

 diverging styles, shorter than the stamens. 



Flowers September-October (cold frame). Not hardy. 

 Habitat. — South-western North America. 



Received from the Smithsonian Institution by the kindness of 

 Dr. Rose. The plants were collected in Mexico by Dr. Palmer. 

 Named after Charles Wright, the first collector of the plant. 



53. Sedum potosinum Rose (fig. 73). 



S. potosinum Rose in Contrib. U.S. Nat. Herb., 13, 300, 1911. 



A distinct, but not very interesting, smallish plant, which may be 

 recognized by its rather creeping habit, pale glaucous-green tint, often 

 with a pinkish flush, blunt, linear, nearly terete leaves, and white 

 flowers. It does not resemble at all closely any other tender Sedum 

 in cultivation. 



Description. — A smallish, rather weak and brittle, evergreen perennial of 

 a pale glaucous, often pinkish, colour. Stems rooting below, ascending, smooth, 

 round, pink, branched, 3-6 inches high. Leaves of barren shoots crowded. 



