152 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 
way down into unequal teeth, reddish green. Petals free, ovate-lanceolate, 
acuminate, f inch long, white, wide-spreading, with a small mucro behind and 
exceeding the tip. Stamens nearly equalling the petals, filaments slightly taper- 
ing, white, anthers pale yellow. Scales small, quadrate, bluntly retuse, minutely 
emarginate, reddish. Carpels erect, slightly exceeding the stamens, white, 
with long slender styles. 
Flowers March-April. Not hardy. 
Habitat. — Mexico. 
With some little hesitation I place the plants from which the 
above description is taken under Hamet's S. Adolphi. The latter 
was collected in Mexico by Purpus, and grown (from seed) in Berlin. 
It is not stated whether the description was drawn from living or 
dried material. My plant was received from New York Botanic 
Garden under the name 5. tortuosum (but that species, as described 
by Hemsley from a single poor specimen in the Kew Herbarium, 
is clearly different). A plant grown in the Succulent House at Kew 
without a name, which was received some years ago from Washington 
and has not flowered since, is identical with my plant so far as leaf 
and stem characters go. The plant also came to me, in apparently 
a smaller form, from Missouri Botanic Garden, without a name. 
No locality is associated with any of these three plants, but they 
are indubitably, from their affinities, Mexican. The New York plant, 
which has now flowered at Glasnevin two years in succession, differs 
from Hamet's description of 5. Adolphi in the larger size of all its parts 
(for instance, leaves of barren stems about 40 by 15 mm. instead of 
28 by 13 mm., petals 9 mm. long instead of 6 mm.), and in other 
lesser points, but there are no essential differences, and it is apparently 
a large form of the species. Hamet, in his description , makes no reference 
to the colour of the leaves and flowers, which distinguish it at a glance 
from its nearest ally, S. Treleasei, and indeed from any other Mexican 
Sedum. 
61. Sedum frutescens Rose. 
S. frutescens Rose in Contrib. U.S. Nat. Herb., 13, 298, 1911. 
A shrubby plant with the tree-like growth of 5. oxypetalum 
H. B. and K., but easily separated by its much narrower leaves and 
white flowers. 
Description. — " Leaves linear, flattened, 2 to 6 cm. long, bright green, 
acute, closely set upon the branches, rounded and free at base ; inflorescence 
a small few-branched cymes ; peduncle i cm. or less long ; branches 3 to 4 cm. 
long ; petals white, 5 to 6 mm. long, acuminate ; carpels widely spreading."— 
Rose, loc. cit. 
Habitat. — Mexico. Not hardy. 
Cuttings were kindly sent by Dr. Rose, but the plant proved 
hard to grow and died out before flowering ; therefore Rose's 
description is quoted. A distinct and interesting species. 
The name refers to the shrubby nature of the plant. 
