Ceanothus oliganthus var. oliganthus

Common names: Hairy ceanothus
Endemic
Synonyms: Ceanothus divaricatus Nuttall C. hirsutus Nuttall
Treatment appears in FNA Volume 12. Treatment on page 88.

Stems: branchlets ± flexible, puberulent to villosulous. Leaf-blades ovate, elliptic, or elliptic-oblong, adaxial surface usually villosulous, sometimes glabrate. Flowers: sepals, petals, and nectary blue or purplish blue; nectary and ovary glabrous. Capsules glabrous; valves smooth, usually crested, sometimes not.


Phenology: Flowering Mar–Jun.
Habitat: Open slopes and ridges, chaparral, woodlands.
Elevation: 60–1500 m.

Discussion

Variety oliganthus occurs primarily in the Coast Ranges south of San Francisco Bay, the Transverse Ranges, and the northern Peninsular Ranges. Putative hybrids and intergradation with var. orcuttii and Ceanothus tomentosus var. olivaceus have been reported from the Santa Ana Mountains, California (M. Van Rensselaer and H. McMinn 1942).

Selected References

None.

Lower Taxa

None.

"thin" is not a number.

gray-green +  and pale green +
glabrate +  and hirtellous +
glabrate +  and villosulous +
perigynous +  and epigynous +
Acute (?) +, Rounded (?) +  and Obtuse (?) +
Clifford L. Schmidt† +  and Dieter H. Wilken +
Nuttall in J. Torrey and A. Gray +
obtuse +  and subcordate +
3-veined +  and veined +
not gland-dotted +
0.8 cm8 mm <br />0.008 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
3[-5]-veined +  and pinnate +
spinulose +, spinose +, serrate +  and entire +
denticulate +, dentate +, crenulate +, crenate +  and serrulate +
ovate;widely elliptic +
4mm;25mm +
puberulent +  and villosulous +
angled +  and round +
depressed +  and lobed +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Hairy ceanothus +
60–1500 m. +
Open slopes and ridges, chaparral, woodlands. +
free +  and adnate +
0 cm0 mm <br />0 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
unisexual +  and bisexual +
1.5 cm15 mm <br />0.015 m <br /> (5.2 cm52 mm <br />0.052 m <br />) +
deciduous +  and persistent +
denticulate +
purplish blue;blue +
intrastaminal +
superior +  and inferior +
not fleshy +
perigynous +  and epigynous +
adnate +  and distinct +
6 +  and 5 +
Clawed (?) +, Obovate (?) +  and Spatulate (?) +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Flowering Mar–Jun. +
2-4-carpellate +
Fl. N. Amer. +
purplish blue +  and blue +
distinct +
spreading +  and incurved +
6 +  and 5 +
keeled;lanceolate;deltate +
not rooting +
3-veined +  and veined +
Ceanothus divaricatus +  and C. hirsutus +
Ceanothus oliganthus var. oliganthus +
Ceanothus oliganthus +
variety +
paniclelike +  and racemelike +
gland-tipped +
rugose +  and smooth +
crested +
unarmed +  and armed +
polygamous +, dioecious +  and synoecious +