Ceanothus cyaneus


Proc. Calif. Acad. Sci., ser. 4, 16: 361. 1927.

Common names: Lakeside ceanothus
Conservation concern
Treatment appears in FNA Volume 12. Treatment on page 90. Mentioned on page 81.

Shrubs, evergreen, 2–5 m. Stems erect, not rooting at nodes; branchlets light green, not thorn-tipped, angled in cross section, flexible, often tuberculate (tubercles minute, brownish), puberulent, glabrescent. Leaves: 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. Inflorescences terminal, paniclelike, 15–30(–40) cm. Flowers: sepals, petals, and nectary deep blue. Capsules 3–5 mm wide, deeply lobed; valves smooth, weakly crested. 2n = 24.

Phenology: Flowering Apr–Jun.
Habitat: Rocky or gravelly slopes, chaparral.
Elevation: 40–600 m.


V12 282-distribution-map.jpg

Calif., Mexico (Baja California).


Ceanothus cyaneus is known in the flora area only from San Diego County, and is threatened throughout its range.

Selected References


Lower Taxa

... more about "Ceanothus cyaneus"
Clifford L. Schmidt† +  and Dieter H. Wilken +
Eastwood +
Lakeside ceanothus +
Calif. +  and Mexico (Baja California). +
40–600 m. +
Rocky or gravelly slopes, chaparral. +
Flowering Apr–Jun. +
Proc. Calif. Acad. Sci., ser. +
Conservation concern +
Ceanothus cyaneus +
Ceanothus subg. Ceanothus +
species +