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Erect, shrub, to 1.2m. Leaves (0.3-)0.5-1.4 x 2-6mm, narrowly ovate or elliptic to oblanceolate, apex obtuse, usually shortly mucronate, lower surface covered with uniformly straw-coloured, touching to overlapping scales. Flowers 1(-2) per inflorescence; calyx c.1mm, rim-like or with rounded to deltoid lobes; corolla pale lavender blue to purplish, broadly funnel-shaped, 7-11mm; stamens 10, exceeding the corolla; ovary scaly, style long or short, glabrous or (rarely) with a few hairs or scales at base.
Distribution China (N Sichuan, Qinghai, Gansu).
RHS Hardiness H4a-b.
Taxonomic note (incl. R. polifolium Franch. & R. spilanthum Hutch.)
This species is probably allied to R. websterianum and R. nitidulum, but it may be distinguished from both by its short calyx.