Rhododendron chamaethomsonii (Tagg & Forrest) Cowan & Davidian

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'Rhododendron chamaethomsonii' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/rhododendron/rhododendron-chamaethomsonii/). Accessed 2020-08-04.

Genus

Infraspecifics

Other species in genus

Glossary

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Credits

New article for Trees and Shrubs Online.

Recommended citation
'Rhododendron chamaethomsonii' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/rhododendron/rhododendron-chamaethomsonii/). Accessed 2020-08-04.

Dwarf shrub, 0.1-1 m. Leaves 2-6 x 1.5-3.2 cm, broadly obovate to broadly elliptic, lower surface glabrous (in cultivation); petioles tomentose and/or stalked-glandular. Flowers (1-)2-5, in a lax truss; calyx 1-7(-15) mm; corolla fleshy, pink to deep crimson, campanulate, with nectar pouches, 25-45 mm; ovary very sparsely to densely rufous-tomentose, sometimes also with at least some glands, abruptly contracted into the glabrous style. Flowering March-May. Royal Horticultural Society (1997)

Distribution  China S Tibet, NW Yunnan

Habitat 4,000-4,600 m

RHS Hardiness Rating H5

Conservation status Vulnerable (VU)


var. chamaethauma (Tagg & Forrest) D.F. Chamb.

Corolla pale to deep pink; calyx minute, 1mm or less; ovary densely hairy.

Distribution China (S Tibet).

Var chamaethomsonii may be no more than a hybrid of R. Forrestii. Var. chamaethauma is however more distinctive and might be a species in its own right.


var. chamaethomsonii

Corolla crimson to carmine; calyx lobes to 7(-15)mm; ovary sparsely hairy, sometimes glandular.

Distribution China (SE Tibet, NW Yunnan).

Awards AM 1932 (Lady Aberconway and Hon H.D. McLaren, Bodnant) as R. repens var. chamaedoxa; flowers crimson.

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