Ceanothus cyaneus |
Ceanothus foliosus |
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lakeside ceanothus, San Diego buckbrush |
wavy leaf ceanothus |
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Habit | 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. | Shrubs, evergreen, 0.3–3.5 m. Stems erect, ascending, arcuate, or prostrate, not rooting at nodes; branchlets green, not thorn-tipped, round or slightly angled in cross section, flexible, villosulous. | ||||||||
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. |
petiole 1–3 mm; blade flat or ± folded lengthwise, narrowly elliptic to oblong-elliptic or oblanceolate, 5–24 × 3–13 mm, base obtuse to rounded, margins entire or weakly glandular-denticulate most of length, ± thick, not revolute, usually wavy, sometimes not wavy, teeth 31–42, apex obtuse, abaxial surface pale green to grayish green, villosulous or glabrous and sometimes sparsely puberulent on veins, adaxial surface dark green, glabrous or sparsely puberulent; pinnately veined or faintly 3-veined from base. |
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Inflorescences | terminal, paniclelike, 15–30(–40) cm. |
axillary, umbel-like to racemelike, 1–3.5(–7) cm. |
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Flowers | sepals, petals, and nectary deep blue. |
sepals, petals, and nectary pale to dark blue. |
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Capsules | 3–5 mm wide, deeply lobed; valves smooth, weakly crested. |
3–4 mm wide, weakly lobed at apex; valves smooth, not or weakly crested. |
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2n | = 24. |
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Ceanothus cyaneus |
Ceanothus foliosus |
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Phenology | Flowering Apr–Jun. | |||||||||
Habitat | Rocky or gravelly slopes, chaparral. | |||||||||
Elevation | 40–600 m. (100–2000 ft.) | |||||||||
Distribution |
CA; Mexico (Baja California)
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CA
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Discussion | 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 3 (3 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 12, p. 90. | FNA vol. 12, p. 93. | ||||||||
Parent taxa | Rhamnaceae > Ceanothus > subg. Ceanothus | Rhamnaceae > Ceanothus > subg. Ceanothus | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Name authority | Eastwood: Proc. Calif. Acad. Sci., ser. 4, 16: 361. (1927) | Parry: Proc. Davenport Acad. Nat. Sci. 5: 172. (1889) | ||||||||
Web links |