240 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



A handsome form, the bright-yellow flowers contrasting well with 

 the purple foliage. Received from Wisley and from Kew, and Mr. 

 Clarence Elliott tells me he has it. 



Attempts to illustrate the species have been unfortunate. The 

 figure in Gardeners' Chronicle, 1878, ii. 377, has the leaves of 5. oreganum. 

 whilst the inflorescence is uncertain. That in Gartenflora, t. 741, 

 is also wrong, though I am not sure what species it represents. 



112. Sedum yosemitense Britton (fig. 139). 



S. yosemitense Britton in Bull. New. York Bot. Gard., 3, 44, 1903. 



A mat-forming plant after the style of 5. spaihuli folium Hooker, 

 resembling it in its rosettes of leaves arising from short, horizontal, leaf- 

 less axillary shoots ; but the leaves are fresh green, not glaucous as in 

 typical spathulifolium, causing the plant to approach more nearly 

 a small form of var. majus Praeger of the former species ; the leaves 

 come near those of S. oreganum Nuttall, but in their arrangement are 

 different. The flowers are near those of spathulifolium, and have 

 no resemblance to those of oreganum. 



Description. — A small, glabrous, evergreen perennial, forming a loose mat. 

 Barren stems axillary, leafless and horizontal below, ending in a short, erect 

 rooting rosette of leaves. Flowering stem from the centre of the rosette, erect, 

 leafy, unbranched, 3 to 4 inches high, smooth, round. Leaves of rosettes alternate, 

 sessile, ovate-spathulate, very blunt, mostly bluntly apiculate, flat, very fleshy, 

 often suffused with red, i to f inch long by J to f inch wide ; those of the flower- 

 ing shoots alternate, oblong or club-shaped, longer than the intemodes, shortly 

 and bluntly spurred. Inflorescence terminal, flat, about ij inch across, of three 

 forked branches with a flower in the primary fork, each flower subtended by a 

 blunt linear or linear-spathulate leaf-like bract ; pedicels stout, shorter than the 

 flowers, up to | inch long on lowest flowers, uppermost flowers sessile. Buds 

 ovate-oblong, bluntly pointed, with short greenish ribs. Flowers ^ inch across. 

 Calyx cup-shaped, over \ inch long, green, fleshy, the segments oblong, bluntly 

 pointed, longer than the tube. Petals wide-spreading, free to the base, oblong- 

 lanceolate, acute, bright yellow, grooved on face, over J inch long by over -^ 

 inch wide. Stamens spreading, a little shorter than the petals, filaments greenish, 

 anthers bright yellow, attached close to the base of the petals. Scales minute, 

 quadrate, retuse, yellow. Carpels slender, erect in flower, pale green, a little 

 shorter than the stamens, spreading in fruit. 



Flowers May. 



Although my plants differ from Dr. Britton's description of 

 S. yosemitense in their flowers being bright yellow, not " pale yellow," 

 and the leaves being spathulate rather than " obovate-orbicular to 

 broadly obovate " and ^ to f inch long instead of " i cm. or less," 

 the essential portions of the description agree, and I have little doubt 

 in retaining under this name my material, which I owe to the kindness 

 of Prof. H. M. Hall, one of the original finders of the plant in the 

 Yosemite Valley, to which, as at present known, it is confined ; 

 he sent it (as S. yosemitense) in June 1915, from Ledge Trail, Yosemite 

 Valley, California. 



