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Dirca occidentalis
Conservation status
Imperiled  (NatureServe)
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Malvales
Family:	Thymelaeaceae
Genus:	Dirca
Species:	D. occidentalis
Binomial name
Dirca occidentalis A.Gray

Dirca occidentalis, the western leatherwood, is a deciduous shrub with leaves three to seven centimeters in length. Yellow flowers emerge prior to leafing. It grows on moist and shaded slopes. It is rare and endemic to the San Francisco Bay area of California. Its closest relative, Dirca palustris, lives in the eastern half of North America.

Gallery

• In flower, Arnold Arboretum of Harvard University accession #311-86*A
• Flower detail
• Flowers

References

1. "NatureServe Explorer 2.0".
2. "Dirca occidentalis". Inventory of Rare and Endangered Plants. online edition, v8-03 0.39. California Native Plant Society.

External links

• Dirca occidentalis images at the Arnold Arboretum of Harvard University Plant Image Database
• Friedman, William (Ned). "As good as gold (well better actually)". Posts from the Collections, Arnold Arboretum of Harvard University website, 28 March 2020. Accessed 30 April 2020.
• Jepson Manual Online Dirca occidentalis A. Gray

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• NatureServe imperiled species
• Thymelaeoideae
• Endemic flora of California
• Endemic flora of the San Francisco Bay Area
• Santa Cruz Mountains
• Thymelaeaceae stubs