Ceanothus dentatus

Torrey & A. Gray

Fl. N. Amer. 1: 268. 1838.

Common names: Cropleaf ceanothus
Endemic
Synonyms: Ceanothus dentatus subsp. floribundus (Hooker) Trelease C. floribundus Hooker
Treatment appears in FNA Volume 12. Treatment on page 92. Mentioned on page 80, 91.

Shrubs, evergreen, 0.5–1.5 m. Stems erect, ascending or spreading, not rooting at nodes; branchlets brown to reddish-brown, not thorn-tipped, round in cross-section, rigid, puberulent. Leaves: petiole 1–2 mm; blade flat to cupped, narrowly elliptic to narrowly oblong or linear, 5–16 × 2–8 mm, base obtuse, margins obscurely glandular-denticulate, strongly revolute, glands 14–36, apex truncate to retuse, abaxial surface pale green, villosulous to strigillose, especially on veins, adaxial surface dark green, strigillose, not glandular papillate; pinnately veined, veins not furrowed. Inflorescences axillary or terminal, racemelike, 1.5–3 cm. Flowers: sepals, petals, and nectary deep blue. Capsules 2.5–4 mm wide, not lobed to weakly lobed; valves smooth, crested or not.


Phenology: Flowering Mar–Jun.
Habitat: Sandy soils, slopes, flats, maritime chaparral, cypress and pine forests.
Elevation: 0–50 m.

Discussion

Ceanothus dentatus is a narrow endemic, restricted to the Monterey Bay region. Some specimens of this species have been mistaken for C. papillosus. Papillose glands are restricted to leaf blade margins and are absent from adaxial leaf surfaces in C. dentatus, but are evenly distributed over the adaxial leaf surfaces in C. papillosus. Putative hybrids between C. dentatus and C. griseus have been named C. ×lobbianus Hooker (M. Van Rensselaer and H. McMinn 1942).

Selected References

None.

Lower Taxa

None.

"thin" is not a number.

... more about "Ceanothus dentatus"
villosulous +  and strigillose +
perigynous +  and epigynous +
Truncate (?) +  and Retuse (?) +
Clifford L. Schmidt† +  and Dieter H. Wilken +
Torrey & A. Gray +
3-veined +  and veined +
not gland-dotted +
0.5 cm5 mm <br />0.005 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
3[-5]-veined +  and pinnate +
spinulose +, spinose +, serrate +  and entire +
denticulate +, dentate +, crenulate +, crenate +  and serrulate +
narrowly elliptic;narrowly oblong or linear +
2mm;8mm +
not thorn-tipped +
not lobed +  and weakly lobed +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Cropleaf ceanothus +
0–50 m. +
Sandy soils, slopes, flats, maritime chaparral, cypress and pine forests. +
free +  and adnate +
0 cm0 mm <br />0 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
terminal +  and axillary +
unisexual +  and bisexual +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
deciduous +  and persistent +
glandular-denticulate +
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–Jun. +
2-4-carpellate +
Fl. N. Amer. +
pink +, usually white +  and cream blue or purple +
distinct +
spreading +  and incurved +
6 +  and 5 +
keeled;lanceolate;deltate +
not rooting +
spreading +, ascending +  and erect +
3-veined +  and veined +
Ceanothus dentatus subsp. floribundus +  and C. floribundus +
Ceanothus dentatus +
Ceanothus subg. Ceanothus +
species +
paniclelike +  and racemelike +
gland-tipped +
not +  and crested +
not furrowed +
unarmed +  and armed +
polygamous +, dioecious +  and synoecious +