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1. Ledum palustre Linnaeus, Sp. Pl. 1: 391. 1753.
杜香 du xiang
Shrubs erect or creeping, to 50 cm tall. Branches slender; young branches densely covered with rust-colored wool; terminal buds conspicuous, ovoid, scales densely rufous-woolly. Leaf blade linear, linear-lanceolate, or narrowly oblong, 1–8 × 0.1–1.5 cm, abaxially densely rufous-hairy or woolly, sometimes also white-pubescent, with raised midvein, adaxially dark green and wrinkled, margin strongly or slightly recurved. Inflorescence many-flowered; pedicels thin. Calyx lobes 5, ovate, 5–8 mm, persistent. Corolla milky white, 5–25 mm, densely rufous-woolly. Stamens 10; filaments pilose at base. Style persistent, 2–4 mm. Capsule ovoid, 3.5–4 mm. Fl. Jun–Jul, fr. Jul–Aug.
Coniferous forests, forest margins, marshes, wet meadows; 400–1400 m. Heilongjiang, Jilin, Nei Mongol [N Korea, Mongolia, Russia; NE Asia, C and N Europe, North America].
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| 1 |
Leaf blade linear-lanceolate or narrowly oblong, 2–8 × 0.4–1.5 cm. |
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1b var. dilatatum |
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Leaf blade linear, 1–3 × 0.1–0.3 cm. |
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(2) |
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| 2 (1) |
Shrubs creeping; leaf blade abaxially densely rufous-hairy and white-pubescent. |
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1c var. decumbens |
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Shrubs often erect; leaf blade abaxially densely rufous-woolly, not white-pubescent
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1a var. palustre |
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Lower Taxa
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