Ceanothus crassifolius

Torrey in War Department [U.S.]

Pacif. Railr. Rep. 4(5): 75. 1857.

Common names: Hoary-leaf ceanothus
Treatment appears in FNA Volume 12. Treatment on page 98. Mentioned on page 96, 97, 107, 108.

Shrubs, 1.5–4 m. Stems erect, not rooting at nodes; branchlets grayish brown to brown, ± flexible to rigid, tomentulose, hairs straight. Leaves not fascicled; petiole 2–6 mm; blade flat to ± cupped, elliptic to widely elliptic, 12–25 (–30) × 8–15 (–23) mm, base obtuse to rounded, margins thick or revolute, entire to denticulate most of length, teeth 8–19, apex obtuse to rounded, abaxial surface pale green to white, tomentulose to glabrate, adaxial surface green, sparsely tomentulose, hairs straight, glabrescent. Inflorescences axillary or terminal, 1–2 cm. Flowers: sepals and petals white; nectary blue to black. Capsules 5–9 mm wide, sometimes weakly lobed at apex; valves viscid, smooth, horns lateral, prominent, erect, intermediate ridges absent. 2n = 24.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Leaf blade abaxial surfaces densely tomentulose, veins obscured, margins denticulate and revolute. Ceanothus crassifolius var. crassifolius
1 Leaf blade abaxial surfaces sparsely tomentulose to glabrate, veins evident, margins entire to weakly denticulate, thick to weakly revolute. Ceanothus crassifolius var. planus

"thick" is not a number.

... more about "Ceanothus crassifolius"
pale green +  and white +
tomentulose +  and glabrate +
perigynous +  and epigynous +
Obtuse (?) +  and Rounded (?) +
Clifford L. Schmidt† +  and Dieter H. Wilken +
Torrey in War Department [U.S.] +
obtuse +  and rounded +
Ceanothus sect. Cerastes +
3-veined +  and veined +
elliptic +  and elliptic to widely +
2.5 cm25 mm <br />0.025 m <br /> (3 cm30 mm <br />0.03 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
not gland-dotted +
1.2 cm12 mm <br />0.012 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
3[-5]-veined +  and pinnate +
spinulose +, spinose +, serrate +  and entire +
denticulate +, dentate +, crenulate +, crenate +  and serrulate +
8mm;15mm +
not thorn-tipped +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Hoary-leaf ceanothus +
Calif. +  and nw Mexico +
straight +
glabrescent +
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 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
deciduous +  and persistent +
entire;denticulate +
revolute +
intrastaminal +
superior +  and inferior +
not fleshy +
perigynous +  and epigynous +
adnate +  and distinct +
6 +  and 5 +
Clawed (?) +, Obovate (?) +  and Spatulate (?) +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
2-4-carpellate +
Pacif. Railr. Rep. +
intermediate +
distinct +
spreading +  and incurved +
6 +  and 5 +
keeled;lanceolate;deltate +
not rooting +
Ceanothus crassifolius +
Ceanothus subg. Cerastes +
species +
paniclelike +  and racemelike +
not gland-tipped +
unarmed +  and armed +
polygamous +, dioecious +  and synoecious +