Stachyurus

Stachyurus is the only genus in the flowering plant family Stachyuraceae,[1] native to the Himalayas and eastern Asia. They are deciduous shrubs or small trees with pendent racemes of 4-petalled flowers which appear on the bare branches before the leaves.[2] The plants have leaves with serrate margins.

Stachyurus
Stachyurus praecox flowers.
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Crossosomatales
Family: Stachyuraceae
J.Agardh
Genus: Stachyurus
Siebold & Zucc.
Species

See text

Pendunculagin, casuarictin, strictinin, casuarinin and casuariin are ellagitannins found in species in this genus.[3]

Stachyurus praecox from Japan, and the slightly later-flowering S. chinensis from China, are both cultivated as ornamental plants, valued for their exceptionally early flowering periods.

Stachyurus chinensis

Species list
  • Stachyurus chinensis
  • Stachyurus coaetaneus
  • Stachyurus cordatulus
  • Stachyurus himalaicus
  • Stachyurus obovatus
  • Stachyurus praecox
  • Stachyurus retusus
  • Stachyurus salicifolius
  • Stachyurus yunnanensis

References
  1. Christenhusz, M. J. M. & Byng, J. W. (2016). "The number of known plants species in the world and its annual increase". Phytotaxa. Magnolia Press. 261 (3): 201–217. doi:10.11646/phytotaxa.261.3.1.
  2. RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 1405332964.
  3. Tannins of Casuarina and Stachyurus species. I: Structures of pendunculagin, casuarictin, strictinin, casuarinin, casuariin, and stachyurin. Okuda T., Yoshida T., Ashida M. and Yazaki K., Journal of the Chemical Society, 1983, no8, pp. 1765-1772
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