Ceanothus oliganthus var. sorediatus

(Hooker & Arnott) Hoover

Leafl. W. Bot. 10: 349. 1966.

Common names: Jim-brush
Endemic
Basionym: Ceanothus sorediatus Hooker & Arnott Bot. Beechey Voy., 328. 1838
Treatment appears in FNA Volume 12. Treatment on page 89. Mentioned on page 86, 88, 94.

Stems: branchlets sometimes rigid and becoming weakly thorn-tipped, glabrous to sparsely puberulent. Leaf-blades elliptic or ovate, adaxial surface sparsely villosulous to glabrate. Flowers: sepals, petals, and nectary usually pale to deep blue, rarely white; nectary and ovary glabrous. Capsules glabrous, valves usually smooth, usually not crested, sometimes weakly crested. 2n = 24.


Phenology: Flowering Feb–Jun.
Habitat: Open slopes and ridges, chaparral, oak woodlands, mixed evergreen forests.
Elevation: 60–1300 m.

Discussion

Variety sorediatus occurs in the Coast Ranges of California from Humboldt County south to San Luis Obispo County, and in the Transverse and northern Peninsular ranges of southern California. Putative hybrids have been reported with Ceanothus integerrimus (Santa Lucia Mountains), C. leucodermis (San Gabriel Mountains), and C. thyrsiflorus (Santa Cruz Mountains).

Selected References

None.

Lower Taxa

None.

"thin" is not a number.

gray-green +  and pale green +
glabrate +  and hirtellous +
sparsely villosulous +  and glabrate +
perigynous +  and epigynous +
Acute (?) +, Rounded (?) +  and Obtuse (?) +
Clifford L. Schmidt† +  and Dieter H. Wilken +
(Hooker & Arnott) Hoover +
obtuse +  and subcordate +
Ceanothus sorediatus +
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 +
glabrous +  and sparsely puberulent +
angled +  and round +
depressed +  and lobed +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Jim-brush +
60–1300 m. +
Open slopes and ridges, chaparral, oak woodlands, mixed evergreen forests. +
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 +
white;usually pale;deep 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 Feb–Jun. +
2-4-carpellate +
Leafl. W. Bot. +
pink +, usually white +  and cream blue or purple +
distinct +
spreading +  and incurved +
6 +  and 5 +
keeled;lanceolate;deltate +
not rooting +
3-veined +  and veined +
Ceanothus oliganthus var. sorediatus +
Ceanothus oliganthus +
variety +
paniclelike +  and racemelike +
gland-tipped +
rugose +  and smooth +
crested +
unarmed +  and armed +
polygamous +, dioecious +  and synoecious +