128 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 
flower-stems similar but smaller. Inflorescence terminal, slightly branched, few- 
flowered, with small leaf -like bracts below the sessile flowers. Flowers flattish, 
I inch across. Sepals unequal, ovate, blunt, very fleshy, ^ to ^ the petals, pale 
green. Petals broadly ovate, obtuse, patent above, wavy, white with a purple 
midrib and a cluster of vein-like purple markings on either side of it, J way up 
from the base. Stamens equalling the petals, adnate in the lower third, filaments 
Fig. 66. — S. glahrum nov. comb. 
greenish, anthers reddish. Scales minute, ovate, greenish, set in a slight hollow 
in the carpels. Carpels stout, ovate, strongly mammillate, streaked and dotted 
with purple, at first erect, later slightly spreading, tapering into short, straight, 
erect styles. 
Flowers August. Not hardy. 
Habitat. — Saltillo, Mexico. 
Received from Washington. The plant as figured here was not 
yet fully grown. 
44. Sedum pachucense nov. comb. (fig. 67). 
Synonym. — Sedastrum pachucense C. H. Thompson in Trans. Acad. Sciences, 
St. Louis, 20, 21-22, pi. X., 191 1. 
Illustration. — I.e. (photo.). 
A well-marked Sedastrum, with dense, small Sempervivum-like 
leaf-rosettes and tallish few-flowered stems. It comes very near 
