Rhododendron decandrum (Makino) Makino

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New article for Trees and Shrubs Online.

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'Rhododendron decandrum' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/rhododendron/rhododendron-decandrum/). Accessed 2020-08-07.

Genus

Other species in genus

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Credits

New article for Trees and Shrubs Online.

Recommended citation
'Rhododendron decandrum' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/rhododendron/rhododendron-decandrum/). Accessed 2020-08-07.

Shrub or small tree; young shoots soon glabrous. Leaves in whorls of up to three, at the ends of the branches, 2-3(-6) x 2-4 cm, broadly rhombic, apex acuminate, lower surface with glands, especially on midrib and veins; petioles sparsely glandular, also with villose hairs. Pedicels villose, densely so at base, also glandular. Flowers solitary or up to 3 per inflorescence, appearing before the leaves; calyx minute; corolla magenta, with flecks, open-funnel-campanulate, 25-28 mm; stamens 10; ovary glandular, with a few villose hairs, style glabrous. Flowering April-May. Royal Horticultural Society (1997)

Distribution  Japan Honshu, Shikoku

Habitat c.800 m

RHS Hardiness Rating H6

Conservation status Least concern (LC)

Distinguished from the apparently allied R. dilatatum by the presence of 10 stamens. Royal Horticultural Society (1997)

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