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1. Rhododendron sect. Brachycalyx Sweet, Brit. Fl. Gard. ser. 2, 1: t. 95. 1831.
轮生叶组 lun sheng ye zu
Low shrubs, deciduous, rarely evergreen, branchlets subverticillate, glabrous or villous. Leaf blade villous or silky-pubescent, glabrescent. Inflorescence 1- to many-flowered; corolla rotate-campanulate or rotate-funnelform, pale rose to purple or red, rarely white, often with flecks within and glabrous on outer surface; stamens 5–10, unequal; ovary villous and/or glandular. Capsules oblong-ovoid to cylindric, rarely conical-ovoid.
About 23 species: E and SE Asia, mostly in Japan; four species (all endemic) in China.
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| 1 |
Ovary and capsule glabrous; leaves abaxially with lateral veins pubescent. |
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492 Rhododendron huadingense |
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Ovary and capsule densely villous and strigose; leaves abaxially with lateral veins not pubescent. |
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(2) |
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| 2 (1) |
Leaf blade ovate, 2–3(–5.5) cm; petiole usually ca. 2 mm, densely ferruginous-pubescent; corolla lilac-purple; pedicel slightly curved. |
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490 Rhododendron farrerae |
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Leaf blades elliptic, ovate-lanceolate or ovate-rhomboidal, 3.5–7.5 cm; petiole 5–7 mm, glabrescent or sparsely pilose; corolla pink or purplish red; pedicel erect. |
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(3) |
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| 3 (2) |
Pedicels densely softly yellow-brown-hairy; leaf margin entire or rarely serrate. |
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491 Rhododendron mariesii |
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Pedicels densely golden-strigose and stipitate-glandular; leaf margin obscurely crenulate. |
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493 Rhododendron chilanshanense |
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Lower Taxa
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