ACCOUNT OF GENUS SEDUM AS FOUND IN CULTIVATION. 43 



Flowers June, Hardy. 



Habitat. — Widely spread in the Himalayas, 10,000-12,000 feet. 



Apparently less variable than most of the Himalayan Rhodiolas, 

 but I have not seen many plants. Collected roots \yere received 

 from the Lloyd Botanic Garden, Darjeehng, on two occasions, and 

 I have also had plants from Edinburgh. I have not seen female 

 flowers. Like many of the species of the Rhodiola and Telephium 

 sections it does not like a very dry situation. 



Named from its long stem, unusually tall for a Rhodiola. 



7. Sedum bhutanense Praeger nom. nov. (figs. 13, 14). 



Synonym. — S. Cooperi Praeger in Journ. of Bot., 57, 49, 1919. 

 This plant resembles in stem and leaf a slender 5. elongatum 

 Wall., while it also recalls S. hupleuroides Wall. It differs from the 

 former in its stem only half as thick, smaller leaves less distinctly 

 stalked or sessile, less leafy inflorescence, flowers only half as large, 

 more densely arranged on the branches, petals much narrower above, 

 &c. 5. hupleuroides has very different leaves, entire, quite sessile, 

 and shorter, a laxer inflorescence, flowers half as large again, smaller 

 scales, &c. 



Description. — A glabrous herbaceous perennial. Rootstock massive, erect, 

 branching, crowned with entire broadly ovate-deltoid acute scales up to f inch 

 long, green when young, brown and chaffy when old. Stems several, simple, 

 slender, erect, smooth, round, leafy throughout, 1-2 feet high, \ inch thick or 

 less. Leaves alternate (or sub-temate or sub-opposite), glabrous, longer than the 

 intemodes, sessile or very shortly stalked, scarcely fleshy, obovate or elliptic, 

 rather distant, toothed above or nearly entire, rounded or pointed at apex, about 

 i\ inch long, f inch broad in middle of stem, becoming smaller above and very 

 small below, dark green with a whitish midrib, whitish below. Inflorescence 

 terminal, lax, up to 2-3 inches long and broad, of several flat-topped, forked, 

 mammillate branches bearing a few leaf-like bracts. Buds sub-globular. 

 Flowers dioecious, usually 4- (sometimes 5- or 6-) parted. Male fxower : — sepals 

 green or purple, linear, fleshy, blunt, free nearly to the base ; petals oblong- 

 oblanceolate, blunt, concave, generally purple, patent or reflexed, ij times the 

 sepals, -^'.j inch long ; stamens equalling the petals, wide-spreading, filaments 

 purple, anthers reddish ; scales laige, shining purple, erect, spreading and broader 

 above, truncate-retuse-emarginate at apex, about J the petals ; carpels very 

 small, blunt, greenish or purplish, much shorter than the scales. Female 

 flower : — sepals as in male ; petals spreading, resembling and equalling or 

 exceeding the sepals ; scales as in male, slightly exceeding the sepals and petals ; 

 carpels erect, lanceolate, green or purple, J to ^ longer than the sepals and petals, 

 with short, stout, straight, capitellate purple styles. 



Flowers May. Hardy. 



Habitat. — Himalaya ; Yunnan. 



Seed of this species from Bhutan, 13,000 feet {Cooper, No. 3517), 

 was apparently widely distributed. I saw young plants at Kew 

 Edinburgh, Glasnevin, and the Bees Nursery near Chester, and grew 

 plants from all four places. Female plants predominated largely. 

 When the leaves are pseudo-temate, the plant somewhat resembles 

 a slender S. yunnanense Franchet, except for the inflorescence. 



At first named after its discoverer, Mr. R. E. Cooper, who 

 obtained it when collecting for Bees, Ltd., in 1913, but the name 

 S. Cooperi is already occupied. 



