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FOC | Family List | FOC Vol. 14 | Apiaceae | Rhododendron

368. Rhododendron clementinae Forrest ex W. W. Smith, Notes Roy. Bot. Gard. Edinburgh. 8: 343. 1915.

麻点杜鹃 ma dian du juan

Shrubs, 2–5 m tall; young shoots glabrous. Petiole slightly narrowly winged, 15–20 mm, glabrous; leaf blade thickly leathery, broadly elliptic to ovate-elliptic, 6–11 × 3–6 cm; base rounded or cordate; margin slightly revolute; apex rounded, mucronate; abaxial surface indumentum 2-layered, thick or thin, upper layer whitish to pale cinnamon or tawny woolly-tomentose, sometimes ± deciduous, surface with or without a pellicle, hairs branched, lower layer grayish, appressed; adaxial surface slightly rugulose, glabrous. Inflorescence racemose-umbellate, 7–15-flowered; rachis ca. 15 mm, glabrous. Pedicel 2–3 cm, glabrous; calyx lobes 6(or 7), ca. 1.5 mm, glabrous; corolla broadly campanulate or cuplike, white to bright rose, with many crimson dots, 2.5–4.5 cm, lobes 6 or 7; stamens 12(–14), filaments with scurfy hairs on lower half; ovary and style glabrous; stigma discoid. Capsule cylindric, 10–20 × 6–10 mm. Fl. May–Jun, fr. Jul–Oct.

Forests, forest margins, thickets, mountains; 2600–4100 m. SW Shaanxi, SW Sichuan, NW Yunnan.


1 Leaf blade 9–11 cm, upper layer of abaxial indumentum thick, whitish to pale cinnamon, with a pellicle; corolla 4–4.5 cm, 6(or 7)-lobed; capsule 1.5–2 cm.   368a subsp. clementinae
+ Leaf blade 6–7 cm, upper layer of abaxial indumentum thin, tawny, ± deciduous, without a pellicle; corolla 2.5–2.8 cm, 7-lobed; capsule 1–1.5 cm.   368b subsp. aureodorsale

Lower Taxa


 

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Photos by The Biodiversity of the Hengduan Mountains Project  
  • Image File (David Boufford)
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  • Image File (David Boufford)
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