46 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 
8. Sedum purpureoviride Praeger (fig. 15). 
5. purpureoviride Praeger in Journ. of Bot., 54, 40, 1917. 
An interesting species, readily diagnosed by the glandular- 
pubescence of the stem and of the under-side of the oblong-lanceolate 
greyish-green toothed leaves, and by its purple and green usually 
dioecious flowers. 
Description. — A dioecious (sometimes hermaphrodite) herbaceous perennial. 
Rootstock erect, thick (about \ inch diameter), branched, aerial. Stems several 
from the summit of the rootstock, erect, annual, unbranched, 8-12 inches long, 
leafy throughout, round, whitish, densely pubescent with short glandular hairs ; 
barren stems absent. Leaves many, alternate, patent or reflexed, increasing 
in size from base to apex of stem, up to i inch long by J inch wide, narrowly 
oblong-lanceolate, rather acute, sessile, rounded at base, edges lightly toothed 
and reflexed, upper surface glabrous, of a dull dark greyish-green with a pale 
midrib, lower surface pale, glandular-pubescent especially on the much-raised 
midrib. Inflorescence a rather dense umbellate cyme, leafy, many-flowered, 
i-i^ inch across, surface convex ; becoming concave, lax, and very leafy before 
fading, owing to growth of the branches and leaf -like bracts. Buds obovate 
to sub-globular, angular, rather apiculate. Flowers mostly 5-parted ; pedicels 
slender,, twice as long as the buds, very glandular. Male flowers : — | inch 
across ; sepals oblong-lanceolate, blunt, fleshy, green, wide-spreading, forming 
an open cup ; petals linear-oblanceolate, blunt, very concave on face both 
longitudinally and transversely, patent or somewhat reflexed, green with a 
purple base, twice the sepals ; stamens ascending, equalling or slightly exceeding 
the petals, filaments purple, anthers pale orange-red ; scales large, purple, arching, 
the tips deflexed, convex on face both longitudinally and transversely, emarginate, 
twice as long as broad, slightly wider upwards ; carpels very small, erect, dark 
green. Hermaphrodite flower : — similar to the male as regards size and 
shape of sepals, petals, stamens, and scales ; carpels erect, green, the slender 
styles occupying nearly half their length, slightly shorter than the stamens. 
Flowers May. Hardy. 
Habitat. — Yunnan, where it has been collected several times 
(for particulars see Journ. of Botany, 54, 40, 1917). All the available 
material belongs to male plants, with the exception of one specimen 
in the Edinburgh Herbarium, which is hermaphrodite. My descrip- 
tion is drawn up mainly from living plants received from Edinburgh 
several years ago, under the name " Sedum sp. Yunnan, Forrest," 
which began to flower with me in 1916. No further particulars 
relative to these specimens are available. The drawings are made 
from the living plant, excepting those of the hermaphrodite flower 
which is from the Edinburgh specimen referred to above. 
Named from the colour of its flowers. 
9. Sedum bupleuroides WaUich (fig. 16). 
S. bupleuroides Wallich Catalogue, No. 7229, 1828. Hooker fil. 
and Thomson in Journ. Linn. Soc, Bot., 2, 98. Clarke in 
Hooker, " Flor. Brit. India," 2, 418. 
A very distinct plant, with the characteristic, much-thickened 
rootstock and unisexual flowers of Rhodiola ; they are dark red- 
purple and small. S. huplexiroides shows a smaller range of variation 
than the majority of the Rhodiolas, and is generally immediately 
