species 339 observations
Otay Mountain Ceanothus
Ceanothus otayensis
Field notes
Ceanothus otayensis, the Otay Mountain buckbrush or Otay Mountain lilac, is a plant species known only from the Otay and San Miguel Mountains of San Diego County, California, and in nearby Baja California, Mexico. It occurs on dry slopes and brushlands at elevations of 600–1100 m.
Ceanothus otayensis is a shrub up to 120 cm tall, erect, not rooting at the nodes. Leaves are opposite, evergreen, broadly ovate, up to 15 mm long. Flowers are white to pale blue, borne in a spike of umbels. Fruits are spherical, about 5 mm across.
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Caterpillars
Moths and butterflies raised on it
Ceanothus Stem Gall Moth, California Tortoiseshell, Pacuvius Duskywing, Pale Swallowtail
36
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Hosted animals
Gall makers, leaf miners and other animals living on or in it
Ceanothus Bud Gall Midge, Pacific Flat-Headed Borer
2
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Plant eaters
Animals that feed on it
Margined Calligrapher, White-bowed Smoothwing, Common Grass Skimmer, Western Yellowjacket
16
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Flower visitors
Pollinators and other flower visitors
Black-tailed Bumble Bee, Yellow-faced Bumble Bee, Echo Azure, Oblique Streaktail
50
Range
Greener is more native, amber more introduced; paler is less certain. How this was decided
Key traits
- Layer
- Shrubs
From USDA PLANTS.