Ceanothus impressus

Ceanothus impressus is a species of shrub in the family Rhamnaceae known by the common name Santa Barbara ceanothus.[2][3] It is endemic to the Central Coast of California, where it is known from San Luis Obispo and Santa Barbara Counties.[4] It occurs in chaparral habitat.[2]

Ceanothus impressus

Vulnerable  (NatureServe)[1]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Rosales
Family: Rhamnaceae
Genus: Ceanothus
Species:
C. impressus
Binomial name
Ceanothus impressus

This is an upright shrub with a dense or open form, reaching up to 3 meters in height. The evergreen leaves are about 2 centimeters long and oval shaped, highly ridged and wrinkled and curling under along the edges. They may be gland-dotted and have grayish hairy undersides. The shrub flowers abundantly in inflorescences of small blue flowers. The fruit is a crested spherical capsule about 4 millimeters wide.[4][5]

There are two varieties:[4]

  • C. impressus var. impressus generally more compact with intricate branching and cupped leaves
  • C. impressus var. nipomensis (Nipomo ceanothus) a rare variety, more open in shape, known only from a region of San Luis Obispo County

References

  1. "NatureServe Explorer". NatureServe Explorer. NatureServe. 2022. Retrieved 19 May 2022.
  2. Ceanothus impressus. CalFlora.
  3. Ceanothus impressus. USDA PLANTS.
  4. Ceanothus impressus. Flora of North America.
  5. Ceanothus impressus. Jepson eFlora. Jepson Herbarium, University of California.


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