ACCOUNT OF GENUS SEDUM AS FOUND IN CULTIVATION. 37 
usually under the name of S. Rhodiola linifoUum rubrum. The 
yellowish- or greenish-flowered type is seldom seen. Apart from 
** linifoUum rubrum " I succeeded in procuring the plant, niale or 
female, from some fourteen different sources — all garden sources 
— and the series shows a wide range of variation, especially as regards 
leaf-characters. The leaves vary from linear-attenuate to lanceolate 
or elliptic-oblong, the ratio of length to breadth from 12 to i to 4 
to I ; as regards dentition, they vary from sharply toothed through- 
out or in upper half to entire (Fig. 9, a). The dark-green colour 
is characteristic, and only once have I seen a slightly glaucous form. 
The best distinguishing marks between this and the wide range of 
forms of 5. roseum are the five-parted flowers and the leaves almost 
always broadest at the base, not near the apex. 
Description. — A glabrous herbaceous perennial. Rootstock thick, branched, 
resembling that of 5. roseum. Stems annual, several from the summit of the 
branches of the rootstock, fewer and taller than in roseum, erect, pale green, 
smooth, round, unbranched, a foot high or more ; barren stems absent. Leaves 
green, rather thin, tapering or oblong, almost always widest at the base, sessile, 
acute, usually about i to i\ inch long by i inch broad, sharply and irregularly 
toothed mostly near the apex or rarely entire, usually set at right angles to the 
stem, flat or recurved. Inflorescence a dense terminal cyme, naked or leafy or 
involucrate. Flowers 5- (sometimes 4-) parted, small, greenish yellow. Male 
FLOWER : — inch long by -f^ inch across, shorter than the pedicel ; sepals linear, 
green ; petals slightly exceeding the sepals, wide-spreading, linear-lanceolate 
or linear-obovate, greenish ; stamens exceeding the petals, greenish ; scales 
large, oblong, emarginate, yellow ; carpels small, erect, slender, green, equalling 
the petals. Female flower : — sepals and petals similar, linear, small, erect ; 
stamens absent ; scales as in the male ; carpels slightly spreading, i| times the 
sepals and petals. 
Flowers April-May. Hardy. 
Habitat. — Himalaya, Turkestan, Mongolia, north China. 
Var. rubrum nom. nov. 
Synonyms. — S. Rhodiola var. linifolia Regel and Schmalh. in " Acta Hort. 
Petrop.," 5, 583. 5. linifoUum rubrum or 5. Rhodiola linifoUum rubrum of 
gardens. 
Illustrations. — Regel, " Gartenfiora," t. 1080. Trans. Russ. Hort. Soc, 
1863. t. 129. 
Usually stouter than the type, leaves elongate, not much toothed, 
inflorescence very dense, generally leafless, flowers rich brown-red, 
with bright orange scales. 
Occurs both as male and female, the male being the commoner 
in cultivation, and much the more showy. In some male plants the 
colouring is deeper, of a purphsh tinge. 
In the relative length of the different parts of the flower, the 
species is somewhat variable, and between the yellow-flowered type 
and the red variety colour-intermediates occur. I have pale orange 
forms, and one handsome plant has petals, sepals, anthers, and 
carpels yellow, scales and filaments deep red. 
The plant commences to flower long before the stem is fully grown, 
especially in the case of var. rubrum. Fig. 9 represents a stem 
in this condition. 
Named after Ivan Kirilow, Russian botanist. 
