Ceanothus hearstiorum

Hoover & Roof

Four Seasons 2(1): 4. 1966.

Common names: Hearst ceanothus
EndemicConservation concern
Treatment appears in FNA Volume 12. Treatment on page 93. Mentioned on page 80, 101.

Shrubs, evergreen, 0.1–0.3 m, matlike or moundlike. Stems spreading or prostrate, not rooting at nodes, some flowering branches ascending; branchlets green to reddish brown, not thorn-tipped, round or slightly angled in cross section, flexible, densely puberulent. Leaves: petiole 1–2 mm; blade flat to cupped, linear, oblong, or oblong-obovate, 8–20 × 2–10 mm, base cuneate to obtuse, margins entire or obscurely glandular-denticulate, weakly revolute, glands 23–31, apex truncate or retuse, abaxial surface green, densely tomentulose, adaxial surface dark green, glandular-papillate and sometimes villosulous; pinnately veined, veins ± furrowed. Inflorescences terminal or axillary, umbel-like or racemelike, 1–5 cm. Flowers: sepals, petals, and nectary deep blue. Capsules 4–5 mm wide, not lobed to weakly lobed; valves smooth, not crested.


Phenology: Flowering Mar–Apr.
Habitat: Consolidated alluvial or serpentine soils, maritime chaparral, coastal prairies.
Elevation: 20–200 m.

Discussion

Ceanothus hearstiorum occurs in a small area of coastal bluffs in northern San Luis Obispo County, growing in close proximity to another local endemic, C. maritimus (subg. Cerastes).

Selected References

None.

Lower Taxa

None.
... more about "Ceanothus hearstiorum"
Clifford L. Schmidt† +  and Dieter H. Wilken +
Hoover & Roof +
Hearst ceanothus +
20–200 m. +
Consolidated alluvial or serpentine soils, maritime chaparral, coastal prairies. +
Flowering Mar–Apr. +
Four Seasons +
Endemic +  and Conservation concern +
Ceanothus hearstiorum +
Ceanothus subg. Ceanothus +
species +