Ceanothus impressus

Trelease

Proc. Calif. Acad. Sci., ser. 2, 1: 112. 1888.

Endemic
Treatment appears in FNA Volume 12. Treatment on page 91. Mentioned on page 80, 92.

Shrubs, evergreen, 0.5–3 m. Stems erect, not rooting at nodes; branchlets brown, not thorn-tipped, round in cross-section, flexible, puberulent. Leaves: petiole 0–4 mm; blade ± flat to strongly cupped, oblong, elliptic, or suborbiculate, 5–20 (–25) × 2.5–17 (–20) mm, base rounded, margins serrulate, thick to weakly or strongly revolute, teeth 11–29, apex obtuse to rounded, abaxial surface pale green, villosulous, adaxial surface dark to medium green, sparsely puberulent, not glandular papillate; pinnately veined, veins furrowed. Inflorescences axillary or terminal, umbellike to racemelike, 1.2–3.5 cm. Flowers: sepals, petals, and nectary blue. Capsules 3–4 mm wide, lobed; valves smooth, crested.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Leaf blades oblong to elliptic, 5–11(–14) × 2.5–8(–12) mm, strongly cupped, margins strongly revolute. Ceanothus impressus var. impressus
1 Leaf blades widely elliptic to suborbiculate, 11–20(–25) × 7–17(–20) mm, ± flat to cupped, margins thick to weakly revolute. Ceanothus impressus var. nipomensis

"thin" is not a number.

... more about "Ceanothus impressus"
dark +  and medium green +
perigynous +  and epigynous +
Obtuse (?) +  and Rounded (?) +
Clifford L. Schmidt† +  and Dieter H. Wilken +
Trelease +
rounded +
3-veined +  and veined +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
1.7 cm17 mm <br />0.017 m <br /> (2 cm20 mm <br />0.02 m <br />) +
not gland-dotted +
0.5 cm5 mm <br />0.005 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 +
suborbiculate;elliptic;suborbiculate;elliptic;oblong +
2.5mm;17mm +
not thorn-tipped +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
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 +
umbellike +  and racemelike +
1.2 cm12 mm <br />0.012 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
deciduous +  and persistent +
intrastaminal +
superior +  and inferior +
not fleshy +
perigynous +  and epigynous +
adnate +  and distinct +
6 +  and 5 +
Clawed (?) +, Obovate (?) +  and Spatulate (?) +
0 cm0 mm <br />0 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
2-4-carpellate +
Proc. Calif. Acad. Sci., ser. +
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 impressus +
Ceanothus subg. Ceanothus +
species +
paniclelike +  and racemelike +
gland-tipped +
crested +
unarmed +  and armed +
polygamous +, dioecious +  and synoecious +