Rhododendron chamaethomsonii var. chamaedoron

R. chamaethomsonii var. chamaedoron (Neriiflora). Krybende busk med små omv. ægformede blade og har tyndt usammenhængende indument på de udvoksede bladundersider. Knopskæl falder af. Stilke og unge skud uden kirtelhår. Ligner R. forrestii var. forrestii (repens).
Hans Eiberg

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Flora of China
RBGE herbarium. R. chamaethomsonii
Jstor

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Flora of China
Upright shrubs, 0.15–0.9 m tall, bark falling off in flakes; shoots 2.5–3 mm in diam. below inflorescence; young shoots glandular-hairy or tomentose; bud scales usually deciduous. Petiole 7–16 mm, glandular; leaf blade leathery, obovate or oblong-obovate, 2.5–6.5(–9) × 1.1–3.5(–4) cm; base obtuse, decurrent; margin revolute; apex rounded, apiculate; abaxial surface pale green, puberulent and glandular towards the base, or glabrous; adaxial surface green, glabrous; midrib grooved adaxially; lateral veins 8–10-paired, impressed adaxially. Inflorescence umbellate, 1–4-flowered. Pedicel 0.8–1.3(–1.6) cm, glandular; calyx 1–4 mm; corolla tubular-campanulate whitish to pale pink to deep crimson, 2.6–2.8(–4.8) cm, pubescent at base outside; lobes 5, unequal, 1.5–3.4 cm, emarginate; ovary conoid, 5–6 mm, hairy, with or without glandular hairs; style glabrous. Capsule cylindric, 15–23 mm, with vestiges of glands; calyx persistent. Fl. Jun.
Rhododendron thickets, alpine thickets, stony slopes, damp rocky alpine slopes; 3300–4500 m. SE Xizang, NW Yunnan

1	Corolla pale to deep pink; calyx to 1 mm; ovary densely hairy.	 	                            438c var. chamaethauma
+	Corolla carmine to crimson; calyx lobes 2–4 mm; ovary sparsely hairy, sometimes glandular.	 	(2)
 	 	 	 
2 (1)	Leaf blade glabrous; petiole and young shoots glandular.	 	                            438a var. chamaethomsonii
+	Leaf blade with thin discontinuous indumentum when mature; petiole and young shoots eglandular.	    438b var. chamaedoron