Ceanothus purpureus, with the common name Napa ceanothus[1] and hollyleaf ceanothus, is a species of shrub in the family Rhamnaceae. It is endemic to northern California, where it is known only from the Inner North Coast Ranges north of the Bay Area, mainly in Sonoma and Napa Counties.[1] The largest remaining population of this shrub occurs on Mt. George near Napa, where it is protected in a botanical preserve.[2]

Ceanothus purpureus
Ceanothus purpureus subsp. divergens

Imperiled  (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. purpureus
Binomial name
Ceanothus purpureus

Description

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The Ceanothus purpureus plant grows in woodland and chaparral habitat. It is spreading or erect in form, approaching 2 meters in maximum height. The woody parts are gray to reddish brown in color. The evergreen leaves are oppositely arranged and up to about 2.5 centimeters long. They are round to oval, wavy, and edged with spiny teeth, resembling the leaf of holly. The inflorescence is a small cluster of blue or purple flowers. The fruit is a horned capsule about half a centimeter long.

References

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  1. ^ a b c "Ceanothus purpureusNapa ceanothus". NatureServe Explorer.
  2. ^ "Foote Botanical Preserve at Mt. George". Land Trust of Napa County.
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