Ceanothus cuneatus
Ceanothus dentatus
buck brush, common buckbrush, narrow-leaf buckthorn, sedge-leaf buckthorn, wedgeleaf cuneatus
cropleaf ceanothus, dwarf ceanothus, sandscrub ceanothus
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.
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.
axillary or terminal, 0.8–2.5 cm.
axillary or terminal, racemelike, 1.5–3 cm.
sepals, petals, and nectary white to lavender or blue.
sepals, petals, and nectary deep blue.
4–6 mm wide, weakly lobed;
valves smooth, horns subapical, prominent, erect, intermediate ridges absent.
2.5–4 mm wide, not lobed to weakly lobed;
valves smooth, crested or not.
Ceanothus cuneatus
Ceanothus dentatus
Varieties 4 (4 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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. | 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. | 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. | var. ramulosus |
3. Leaf blade margins 5–9-toothed, apices rounded to truncate. | var. rigidus |
CA
OR
WA
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
