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Comments

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Li et al. (in T. C. Huang, Fl. Taiwan, ed. 2, 4: 31. 1998) considered that Rhododendron pachysanthum and the synonyms cited above are synonymous with R. hyperythrum. See also the comment under R. hyperythrum below.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of China Vol. 14: 352 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of China @ eFloras.org
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Wu Zhengyi, Peter H. Raven & Hong Deyuan
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Description

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Shrubs; young shoots tomentose. Petiole ca. 15 mm, tomentose; leaf blade leathery, oblong-elliptic, 6–9 × 2.5–3.5 cm; base rounded; apex acute, apiculate; abaxial surface persistently pale white-brown to rufous tomentose, sometimes only on the midrib, hairs branched; adaxial surface rugose or smooth, glabrous. Inflorescence 10–20-flowered; rachis 10–20 mm. Pedicel ca. 2.5 cm, glandular-pubescent; calyx lobes ca. 1 mm, rounded, glandular especially on margin; corolla widely campanulate, white to pale pink, with or without flecks, ca. 4 cm; ovary densely glandular-hairy; style glabrous. Capsule ca. 15 × 5 mm.
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cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of China Vol. 14: 352 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of China @ eFloras.org
editor
Wu Zhengyi, Peter H. Raven & Hong Deyuan
project
eFloras.org
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Habitat & Distribution

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Forests. Taiwan.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of China Vol. 14: 352 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of China @ eFloras.org
editor
Wu Zhengyi, Peter H. Raven & Hong Deyuan
project
eFloras.org
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Rhododendron pachysanthum

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Rhododendron pachysanthum (Chinese: 台湾山地杜鹃; pinyin: Táiwān shāndì dùjuān),[1] the thick-flowered rhododendron,[2] is a species of flowering plant in the heath family Ericaceae, that is native to Taiwan. It is an evergreen shrub growing to 2.5 m (8.2 ft) tall and broad. This species is particularly noted for its 9 cm (3.5 in) leaves, which may be heavily felted on both surfaces, red above and brown beneath. In early spring, trusses of pale pink flowers appear, spotted crimson on the inner surface.[2]

In cultivation in the UK Rhododendron pachysanthum has gained the Royal Horticultural Society’s Award of Garden Merit.[2][3] It is hardy down to −15 °C (5 °F) but like most rhododendrons it requires a sheltered spot in dappled shade, and an acid soil enriched with leaf mould.

Synonyms

  • Rhododendron pseudochrysanthum Hayata
  • Rhododendron f. rufovelutinum T. Yamazaki
  • Rhododendron pseudochrysanthum var. rufovelutinum (T. Yamazaki) T. Yamazaki
  • Rhododendron rufum Batalin var. pachysanthum (Hayata) S. S. Ying.

References

  1. ^ Mingyuan, Fang; Chamberlain, David F. "Rhododendron pachysanthum". Flora of China. Vol. 14. Retrieved 6 October 2018 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  2. ^ a b c "RHS Plantfinder - Rhododendron pachysanthum". Retrieved 3 October 2018.
  3. ^ "AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 85. Retrieved 2 October 2018.
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Rhododendron pachysanthum: Brief Summary

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Rhododendron pachysanthum (Chinese: 台湾山地杜鹃; pinyin: Táiwān shāndì dùjuān), the thick-flowered rhododendron, is a species of flowering plant in the heath family Ericaceae, that is native to Taiwan. It is an evergreen shrub growing to 2.5 m (8.2 ft) tall and broad. This species is particularly noted for its 9 cm (3.5 in) leaves, which may be heavily felted on both surfaces, red above and brown beneath. In early spring, trusses of pale pink flowers appear, spotted crimson on the inner surface.

In cultivation in the UK Rhododendron pachysanthum has gained the Royal Horticultural Society’s Award of Garden Merit. It is hardy down to −15 °C (5 °F) but like most rhododendrons it requires a sheltered spot in dappled shade, and an acid soil enriched with leaf mould.

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