Rhododendron dauricum

Rhododendron dauricum (Chinese: 兴安杜鹃; pinyin: Xīng'ān dùjuān)[1] is a species of flowering plant in the heath family Ericaceae native to forests and forest margins in Eastern Siberia, Mongolia, North China and Hokkaido, Japan. The Latin specific epithet dauricum means "from Siberia"[2]: 70  – Transbaikal is also known as Dauria.

Rhododendron dauricum
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Ericales
Family: Ericaceae
Genus: Rhododendron
Species:
R. dauricum
Binomial name
Rhododendron dauricum

Description

Growing to 1.5 m (5 ft) tall and broad, it is a compact semi-evergreen shrub with purple flowers which open in late winter or early spring, before the dark green leaves appear.[3][4]

Phytochemistry

R. dauricum contains monoterpenoids daurichromenic acid (DCA) and confluentin (decarboxylated DCA) as well as rhododaurichromenic acids A and B which are structurally related to Cannabichromene.[5]

Cultivation

R. dauricum is the basis of the PJM hybrid (Rhododendron dauricum × Rhododendron carolinianum).

The cultivar ‘Mid-winter’, with bright pink flowers, has gained the Royal Horticultural Society’s Award of Garden Merit.[4][6] It is hardy down to −20 °C (−4 °F), but like all rhododendrons requires a sheltered position in dappled shade and acid soil enriched with leaf mould.

References
  1. Fang, Ruizheng; Chamberlain, David F. "Rhododendron mucronulatum". Flora of China. Vol. 14. Retrieved 7 October 2018 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  2. Harrison, Lorraine (2012). RHS Latin for Gardeners. United Kingdom: Mitchell Beazley. ISBN 978-1845337315.
  3. Description of Rhododendron dauricum. American Rhododendron Society
  4. "RHS Plantfinder - Rhododendron dauricum 'Mid-winter'". Retrieved 8 October 2018.
  5. Shi, Qing; Li, Teng-Teng; Wu, Yong-Mei; Sun, Xin-Yu; Lei, Chun; Li, Jing-Ya; Hou, Ai-Jun (1 December 2020). "Meroterpenoids with diverse structures and anti-inflammatory activities from Rhododendron anthopogonoides". Phytochemistry. 180: 112524. doi:10.1016/j.phytochem.2020.112524. PMID 33038550. S2CID 222280745.
  6. "AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 85. Retrieved 8 October 2018.

Bibliography
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.