溪畔杜鹃 Rhododendron rivulare

  • Scientific Name: Rhododendron rivulare Hand.-Mazz.
  • Ref: Anz. Akad. Wiss. Wien, Math.-Naturwiss. Kl. 58:152. 1921
  • Chinese Common Name: 溪畔杜鹃 xīpàn dùjuān
  • Family: Ericaceae
  • Genus: Rhododendron
  • Distribution: Dense valley forests; 700–1200 m. Guangdong, Guangxi, Guizhou, Hubei, Hunan, Sichuan.
  • Photo: 04/22/2016, Hangzhou Botanical Garden, Zhejiang
Shrubs, evergreen, 1–3 m tall; young shoots densely shortly ferruginous glandular-hairy, also with coarse flat appressed hairs and long setae. Summer and winter leaves different. Petiole 5–10 mm, densely shortly ferruginous glandular-hairy; leaf blade papery, ovate-lanceolate or oblong-ovate, 5–9(–11.5) × 1–4 cm; base subrounded; margin entire, shortly setose; apex acuminate and mucronate; abaxial surface conspicuously hairy on midrib; adaxial surface sparsely villous, later with hair remnants only on midrib; lateral veins not reaching the margin. Inflorescence more than 10-flowered. Pedicel ca. 1.5 cm, densely shortly glandular-hairy and with coarse long flat appressed hairs; calyx lobes narrowly triangular, 2–5 mm, shortly pale yellow-brown glandular-hairy and coarsely long-strigose; corolla funnelform, purple-red, ca. 2.3 cm; tube narrowly cylindric, widening above, ca. 13 × 2 mm, outer surface glabrous, inner surface puberulent, lobes oblong-ovate; stamens 5, unequal, 2.5–2.8 cm, exserted, filaments puberulent below; ovary ovoid, densely red-brown-setose. Capsule oblong-ovoid, ca. 9 × 4 mm, densely long setose. Fl. Apr–Jun, fr. Jul–Nov. (Flora of China)

04/22/2016, Hangzhou Botanical Garden, Zhejiang

04/22/2016, Hangzhou Botanical Garden, Zhejiang

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