ACCOUNT OF GENUS SEDUM AS FOUND IN CULTIVATION. 117 
name minor to the narrow-leaved form ; but it appears better that 
the form which Maximowicz mentions first (which is also that to which 
Middendorff's own specimens belong, and which is much the com- 
moner in cultivation) should be taken as the type, and it is the plant 
of my description. The other form is described separately below. 
Description. — A glabrous tufted perennial, without barren stems. The 
stems die down in autumn : next year's stems arise in late summer from near 
the base of these, remain short and leafy during the winter, shoot up, flower and 
die during the succeeding season. Rootstock thick, much branched upwards. 
Stems many, 6-12 inches, erect, round, smooth, slender, unbranched, leafy. 
Leaves numerous, alternate, spreading, narrow, concave, nearly linear, about 
inch long by ^ inch broad, sessile, fleshy, with several small teeth near the 
apex, entire in the lower two-thirds. Inflorescence a leafy flat-topped umbellate 
cyme, of several (usually 4) forked branches with flowers in the forks, about 
I inch across. Bracts leaf -like, the uppermost entire. Buds ovate, acute, ribbed. 
Flowers yellow, f inch across, the lowest shortly pedicelled, the rest sessile. 
Sepals green, spreading in bud ; obtuse, linear and terete in upper part ; widening 
below to a broadish base. Petals bright yellow, times to twice the sepals, 
lanceolate, acute, keeled, wide-spreading. Stamens f the petals, filaments 
yellow, anthers orange. Scales very short, whitish. Carpels greenish-yellow, 
erect, becoming red and stellate in fruit. Whole plant turning red in fading. 
Flowers July-August. Hardy. 
Habitat. — East Siberia, Northern Manchuria. 
A distinct and pleasing little plant, most resembling 5. hyhridum, 
but with more or less erect stems densely clothed with narrower leaves, 
and without creeping, barren shoots. 
Rare in cultivation. I have received it from the late Canon 
Ellacombe, Messrs. Backhouse of York, and Cunningham Eraser & 
Co. of Edinburgh, and from Petrograd. 
Named in honour of A. T. von Middendorff, whose travels in 
Northern Siberia in 1843-4 first made known many of the plants of 
that region. 
Var. diffusum var nov.* (fig. 59, h). 
Description. — Stems longer than in the type, more or less decumbent, 
tending to root at the base. Leaves larger, lanceolate to linear-spathulate, 1-2 
inches long, by J inch broad, sharply toothed in upper part, teeth up to | inch 
deep, inflorescence lax, 2-3 inches across. 
39. Sedum EUacombianum Praeger (figs. 546, 60, 61). 
5. EUacombianum Praeger in Journ. of Bot., 54, 41, 191 7. 
A distinct species, widely spread in cultivation, but till recently 
undescribed, having been confused with Aizoon, Selskiannm, kavi- 
tschaticum, and hyhridum. It is far removed from the second and fourth 
of these — Selskianum being tall, hairy, narrow-leaved and smaller- 
flowered, and hyhridum standing apart from all the rest of the Aizoon 
section in its creeping habit. 5. EUacombianum is nearly related to 
* Caulis quam in typo longior plus-minus decumbens, nonnunquam basi 
radicans. Folia majora, lanceolata vel lineari-spathulata, 2-5-5 cm. longa. 6 mm. 
lata, in parte superiore acutidentata, denies ad 3 mm. longi ; inflorescentia laxa. 
5-8 cm. lata. 
