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, umbellike 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.

"thin" is not a number.

... more about "Ceanothus hearstiorum"
glandular-papillate +
perigynous +  and epigynous +
Retuse (?) +  and Truncate (?) +
Clifford L. Schmidt† +  and Dieter H. Wilken +
Hoover & Roof +
cuneate +  and obtuse +
3-veined +  and veined +
not gland-dotted +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
3[-5]-veined +  and pinnate +
spinulose +, spinose +, serrate +  and entire +
denticulate +, dentate +, crenulate +, crenate +  and serrulate +
oblong-obovate;oblong;oblong-obovate;oblong;linear +
2mm;10mm +
not thorn-tipped +
angled +  and round +
not lobed +  and weakly lobed +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Hearst ceanothus +
20–200 m. +
Consolidated alluvial or serpentine soils, maritime chaparral, coastal prairies. +
free +  and adnate +
0 cm0 mm <br />0 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
axillary +  and terminal +
unisexual +  and bisexual +
racemelike +  and umbel-like +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
deciduous +  and persistent +
glandular-denticulate;entire +
intrastaminal +
superior +  and inferior +
not fleshy +
perigynous +  and epigynous +
adnate +  and distinct +
6 +  and 5 +
Clawed (?) +, Obovate (?) +  and Spatulate (?) +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Flowering Mar–Apr. +
2-4-carpellate +
Four Seasons +
pink +, usually white +  and cream blue or purple +
distinct +
spreading +  and incurved +
6 +  and 5 +
keeled;lanceolate;deltate +
Endemic +  and Conservation concern +
not rooting +
prostrate +  and spreading +
3-veined +  and veined +
Ceanothus hearstiorum +
Ceanothus subg. Ceanothus +
species +
paniclelike +  and racemelike +
gland-tipped +
not crested +
unarmed +  and armed +
shrub +  and matlike +
polygamous +, dioecious +  and synoecious +