Crassula sericea Schönland

국표에 없다.

Origin and Habitat: Witputz in southern Namibia along coastal mountains to Komaggas in Namaqualand, and across Bushmanland (Northern Cape, South Africa).
Habitat and ecology: Crassula sericea grows in shallow, sandy soil on the edges of koppies and in rock crevices often under overhanging rocks, usually fully exposed to the blazing sun together with other cliff-dwelling succulent plants such as Tylecodon ellaphieae, Aloe meyeri, Bulbine pendens and Ornithogalum suaveolens. It is quite abundant, particularly in the western part of its range. Flowering time May – August.

Description: Crassula sericea (var. sericea) is a small perennial succulent subshrub up to 20 cm high, usually much branched, forming rounded spreading tufts. Its densely hairy leaves are borne at the ends of the branches, the are flat, rather blunt, and have a brown margin. The stems of old plants are sometimes woody and leafless. The petals have characteristic and distinctive dorsal appendages. A yellow-green versions of C. sericea is commonly encountered in the wild, but all forms of the species are worth cultivating. The variability of it foliage makes it easy to confuse with other species.
Leaves: Borne at the ends of the branches, spreading, densely hairy and greyish-green. Usually oblanceolate or (broadly) obovate, rarely oblanceolate, elliptic or orbicular, (8-)10-25(-45) mm long, (4-)10-25(-35) mm broad, base cuneate, tip rounded, rarely pointed; blade usually laterally compressed, upper face slightly concave to convex, more or less convex below. Hairs (fine, silky, white, hairlike papillae) spreading, rarely with recurved to globular trichomes, green to grey-green or greyish brown and often somewhat brown along margin towards tips. The old leaves are not deciduous.
Inflorescences: Elongated thyrses 4-10 cm long with few to many dichasia, peduncle hairy, purplish, 2 mm in diameter at the base, bracts triangular, clasping, 2 mm long.
Flowers: Calyx lobes triangular-lanceolate, 1-2,5 mm long, usually rounded, covered with spreading sometimes recurved hairs and marginal cilia, fleshy, green. Corolla tubular 4 mm long, 2 mm wide, fused basally for 0,7-1 mm, cream to pale yellow, rarely tinged pink; lobes oblong to oblong-oblanceolate, 3-4 mm long, 1.3 mm wide, ,ascending-spreading, acute, white, each with a more or less distinct dorsal appendage or rarely absent, more or less recurved. Stamens with brown anthers. Squamae transversely oblong to square, 0,4-0,8 x 0,5-0,7 mm, truncate to slightly emarginate, somewhat constricted downwards, fleshy, yellow.
Chromosome: 2n = 14.
Similar species: C. sericea is usually erect (rarely decumbent) and more robust than Crasula lanuginosa, it is distinguished by its woody stems and distinct peduncle.

Crassula sericea (llifle.com)

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