Ceanothus cuneatus

(Hooker) Nuttall in J. Torrey and A. Gray

Fl. N. Amer. 1: 267. 1838.

Illustrated
Basionym: Rhamnus cuneata Hooker Fl. Bor.-Amer. 1: 124. 1831
Treatment appears in FNA Volume 12. Treatment on page 99. Mentioned on page 78, 96, 97, 98, 101, 106, 107.

Shrubs, 0.5–3.5 m. Stems erect, ascending, or spreading, not rooting at nodes; branchlets grayish brown to brown, rigid or flexible, glabrate, puberulent, or tomentulose, hairs straight. Leaves usually both fascicled and not fascicled on same plant, rarely none fascicled; petiole 1–3 mm; blade flat to cupped, elliptic, oblanceolate, obovate, or orbiculate, 4–22 (–30) × 3–12 (–22) mm, base rounded, margins thick, not revolute, entire or denticulate distal to middle, teeth 0–9, apex obtuse, rounded, truncate, or retuse, abaxial surface pale green, glabrate or glabrous, adaxial surface green, glabrous. Inflorescences axillary or terminal, 0.8–2.5 cm. Flowers: sepals, petals, and nectary white to lavender or blue. Capsules 4–6 mm wide, weakly lobed; valves smooth, horns subapical, prominent, erect, intermediate ridges absent.

Discussion

Varieties 4 (4 in the flora).

Selected References

None.

Key

1 Leaf blades of fascicled and non-fascicled leaves elliptic to widely oblanceolate, length usually 2+ times width; sepals, petals, and nectaries usually white, sometimes pale blue or pale lavender. Ceanothus cuneatus var. cuneatus
1 Leaf blades of fascicled and non-fascicled leaves widely oblanceolate, widely obovate, or orbiculate, length usually less than 2 times width, or of fascicled leaves elliptic to narrowly oblanceolate (in var. fascicularis); sepals, petals, and nectaries usually lavender to blue, sometimes pale blue, rarely white. > 2
2 Leaf blades of fascicled leaves elliptic to narrowly oblanceolate, 9–15 × 3–6 mm, length usually 2+ times width. Ceanothus cuneatus var. fascicularis
2 Leaf blades of fascicled leaves widely oblanceolate, widely obovate, or orbiculate, 4–15 × 3–12 mm, length less than 2 times width. > 3
3 Leaf blade margins usually entire, rarely 1–4-toothed, apices rounded, truncate, or retuse. Ceanothus cuneatus var. ramulosus
3 Leaf blade margins 5–9-toothed, apices rounded to truncate. Ceanothus cuneatus var. rigidus

"thick" is not a number.

... more about "Ceanothus cuneatus"
glabrous +  and glabrate +
perigynous +  and epigynous +
Retuse (?) +, Truncate (?) +, Rounded (?) +  and Obtuse (?) +
Clifford L. Schmidt† +  and Dieter H. Wilken +
(Hooker) Nuttall in J. Torrey and A. Gray +
rounded +
Rhamnus cuneata +
3-veined +  and veined +
2.2 cm22 mm <br />0.022 m <br /> (3 cm30 mm <br />0.03 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
not gland-dotted +
0.4 cm4 mm <br />0.004 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
3[-5]-veined +  and pinnate +
spinulose +, spinose +, serrate +  and entire +
denticulate +, dentate +, crenulate +, crenate +  and serrulate +
orbiculate;obovate;orbiculate;obovate;oblanceolate;elliptic +
3mm;12mm +
not thorn-tipped +
tomentulose +, puberulent +  and glabrate +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Calif. +, Oreg. +  and nw Mexico +
straight +
subapical +
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 +
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
fascicled +  and not fascicled +
deciduous +  and persistent +
denticulate distal;middle +
white;lavender or blue +
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 /> (0.3 cm3 mm <br />0.003 m <br />) +
2-4-carpellate +
Fl. N. Amer. +
intermediate +
pink +, usually white +  and cream blue or purple +
distinct +
spreading +  and incurved +
6 +  and 5 +
keeled;lanceolate;deltate +
Illustrated +
not rooting +
spreading +, ascending +  and erect +
Ceanothus cuneatus +
Ceanothus subg. Cerastes +
species +
paniclelike +  and racemelike +
not gland-tipped +
unarmed +  and armed +
polygamous +, dioecious +  and synoecious +