72 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 
stems radiating like the arms of a star-fish and bearing rosy ovate 
flowers are quite pecuHar. 
Description. — A glabrous herbaceous perennial. Rootstock thick, very- 
short, erect, branching downward into thick woody roots a few ihches long. 
Root-leaves forming a flat rosette about 4 inches across, entire, green, fleshy, 
flat, petiolate, the petiole rather longer or shorter than the lanceolate lamina, 
with a broad clasping base. Flower-stems arising from the axils of the withered 
root-leaves of the previous season, and appearing before the rosette of new 
leaves, slender, smooth, red, leafy, decumbent, unbranched, 4-6 inches long. 
Stem-leaves green, tipped red, flat, fleshy, glabrous, entire, sessile, linear-oblong, 
Fig. 31. — 5. Praegerianum, viewed from above, x J. 
rather blunt, f inch long, reflexed. Inflorescence a terminal, leafy, lax cyme, 
bearing 5 to 10 flowers in all, composed of 2 to 3 forked or simple branches, with 
a flower in the primary or secondary forks, bracts leaf-like. Buds ovate, acute. 
Flowers ovoid, resembhng those of heather, inch long, the lower ones shortly 
stalked. Sepals erect, ovate-lanceolate, acute, divided nearly to the base, 
green flushed red. Petals erect, curved so as to almost meet at the apices, 
lanceolate, shortly apiculate, rose-coloured, twice the sepals. Stamens equalling 
the petals, erect, filaments pink, anthers purple, the epipetalous ones inserted 
^ way up. Scales subquadrate, purple-brown. Carpels slightly shorter than 
the stamens, pink, very erect ; styles very short, slender, erect, deep rose. 
Flowers July. Hardy. 
Habitat. — Tibet. 
A single plant was raised at Edinburgh in 1913 from a pinch of 
seed taken from a dried specimen just received into the Herbarium. 
The specimen in question was obtained by a native collector at 
Tarkarpo in the Chumbi Valley, Tibet, at 12,000 feet elevation. 
The stemless rosette of leaves and radiating decumbent flower- 
stems give the plant an appearance very different from that of any 
other Sedum in cultivation. Its nearest relations are Tibetan and 
Central Asiatic species not in cultivation. Among garden plants 
the species which is nearest to it is S. primuloides, which agrees in 
possessing terminal rosettes of stalked, entire flat leaves, from the 
axils of which arise leafy flowering shoots bearing ovate flowers ; 
but in primuloides the caudex is (in cultivation) elongated and much 
branched, the leaves very short and broad, and the flowers white. 
