Ceanothus cyaneus
Ceanothus cuneatus
lakeside ceanothus, San Diego buckbrush
buck brush, common buckbrush, narrow-leaf buckthorn, sedge-leaf buckthorn, wedgeleaf cuneatus
petiole 2–6 mm;
blade flat, ovate-elliptic, 20–50 × 15–20 mm, base rounded, margins usually denticulate to serrulate, rarely entire, not revolute, teeth 23–58, apex acute to obtuse, abaxial surface pale green, veins puberulent, adaxial surface dark green, glabrous or sparsely puberulent; 3-veined from base.
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.
terminal, paniclelike, 15–30(–40) cm.
axillary or terminal, 0.8–2.5 cm.
sepals, petals, and nectary deep blue.
sepals, petals, and nectary white to lavender or blue.
3–5 mm wide, deeply lobed;
valves smooth, weakly crested.
4–6 mm wide, weakly lobed;
valves smooth, horns subapical, prominent, erect, intermediate ridges absent.
= 24.
Ceanothus cyaneus
Ceanothus cuneatus
Ceanothus cyaneus is known in the flora area only from San Diego County, and is threatened throughout its range.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Varieties 4 (4 in the flora).
(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
WildflowerSearch
iNaturalist
USDA Plants Database
OR
WA
Flora NW
PNW Herbaria
