Ceanothus diversifolius

Kellogg

Proc. Calif. Acad. Sci. 1: 58. 1855.

Common names: Pine mat
Endemic
Synonyms: Ceanothus decumbens S. Watson
Treatment appears in FNA Volume 12. Treatment on page 94. Mentioned on page 80, 87.

Shrubs, evergreen, 0.2–0.3 (–0.5) m, matlike. Stems spreading, sometimes rooting at nodes; branchlets green, sometimes tinged red, not thorn-tipped, usually round, sometimes angled, in cross-section, flexible, puberulent. Leaves: petiole 3–11 mm; blade flat, elliptic to widely ovate, 12–45 × 6–20 mm, base obtuse to rounded, margins serrulate to denticulate, not revolute, usually not wavy, sometimes wavy, teeth 27–42, apex ± obtuse to rounded, abaxial surface pale green, pilosulous, adaxial surface green, pilosulous; usually pinnately veined, rarely 3-veined from base. Inflorescences axillary, umbellike to racemelike, 1.3–4 cm. Flowers: sepals, petals, and nectary usually blue to pale blue, rarely white. Capsules 4–5 mm wide, weakly lobed near apex; valves smooth, crested.


Phenology: Flowering Apr–Jun.
Habitat: Well-drained slopes and canyons, open to shaded sites, mixed evergreen and conifer forests.
Elevation: 700–2300 m.

Discussion

Ceanothus diversifolius occurs in the North Coast Ranges and the western slopes of the Cascade Range and the Sierra Nevada; it often forms mats to two meters wide. Marginal teeth on young leaves are notable in having more or less persistent, narrowly conic glands, not seen elsewhere in Ceanothus.

Selected References

None.

Lower Taxa

None.

"thin" is not a number.

... more about "Ceanothus diversifolius"
perigynous +  and epigynous +
Clifford L. Schmidt† +  and Dieter H. Wilken +
Kellogg +
obtuse +  and rounded +
3-veined +  and veined +
not gland-dotted +
1.2 cm12 mm <br />0.012 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
3[-5]-veined +  and pinnate +
spinulose +, spinose +, serrate +  and entire +
denticulate +, dentate +, crenulate +, crenate +  and serrulate +
elliptic;widely ovate +
6mm;20mm +
not thorn-tipped +
angled +  and round +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Pine mat +
700–2300 m. +
Well-drained slopes and canyons, open to shaded sites, mixed evergreen and conifer 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 +
umbellike +  and racemelike +
1.3 cm13 mm <br />0.013 m <br /> (4 cm40 mm <br />0.04 m <br />) +
3-veined +  and veined +
deciduous +  and persistent +
wavy;wavy;serrulate;denticulate +
white;usually blue;pale 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 /> (1.1 cm11 mm <br />0.011 m <br />) +
Flowering Apr–Jun. +
2-4-carpellate +
Proc. Calif. Acad. Sci. +
pink +, usually white +  and cream blue or purple +
distinct +
spreading +  and incurved +
6 +  and 5 +
keeled;lanceolate;deltate +
3-veined +  and veined +
Ceanothus decumbens +
Ceanothus diversifolius +
Ceanothus subg. Ceanothus +
species +
paniclelike +  and racemelike +
gland-tipped +
crested +
unarmed +  and armed +
shrub +  and matlike +
polygamous +, dioecious +  and synoecious +