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lakeside ceanothus, San Diego buckbrush
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Hearst ceanothus, Hearst ranch buckbrush, Hearst's ceanothus
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| 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, 0.1–0.3 m, matlike or moundlike. |
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spreading or prostrate, not rooting at nodes, some flowering branches ascending; branchlets green to reddish brown, not thorn-tipped, round or slightly angled in cross section, flexible, densely puberulent. |
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 1–2 mm; blade flat to cupped, linear, oblong, or oblong-obovate, 8–20 × 2–10 mm, base cuneate to obtuse, margins entire or obscurely glandular-denticulate, weakly revolute, glands 23–31, apex truncate or retuse, abaxial surface green, densely tomentulose, adaxial surface dark green, glandular-papillate and sometimes villosulous; pinnately veined, veins ± furrowed. |
terminal, paniclelike, 15–30(–40) cm. |
terminal or axillary, umbel-like or racemelike, 1–5 cm. |
sepals, petals, and nectary deep blue. |
sepals, petals, and nectary deep blue. |
3–5 mm wide, deeply lobed; valves smooth, weakly crested. |
4–5 mm wide, not lobed to weakly lobed; valves smooth, not crested. |
= 24. |
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| Flowering Apr–Jun. |
Flowering Mar–Apr. |
| Rocky or gravelly slopes, chaparral. |
Consolidated alluvial or serpentine soils, maritime chaparral, coastal prairies. |
| 40–600 m. (100–2000 ft.) |
20–200 m. (100–700 ft.) |
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CA; Mexico (Baja California)
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CA |
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.) |
Ceanothus hearstiorum occurs in a small area of coastal bluffs in northern San Luis Obispo County, growing in close proximity to another local endemic, C. maritimus (subg. Cerastes). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
| FNA vol. 12, p. 90. |
FNA vol. 12, p. 93. |
| Rhamnaceae > Ceanothus > subg. Ceanothus |
Rhamnaceae > Ceanothus > subg. Ceanothus |
C. americanus, C. arboreus, C. arcuatus, C. confusus, C. cordulatus, C. crassifolius, C. cuneatus, C. dentatus, C. divergens, C. diversifolius, C. fendleri, C. ferrisiae, C. foliosus, C. fresnensis, C. gloriosus, C. griseus, C. hearstiorum, C. herbaceus, C. impressus, C. incanus, C. integerrimus, C. jepsonii, C. lemmonii, C. leucodermis, C. maritimus, C. martini, C. masonii, C. megacarpus, C. microphyllus, C. oliganthus, C. ophiochilus, C. otayensis, C. palmeri, C. papillosus, C. parryi, C. parvifolius, C. pauciflorus, C. perplexans, C. pinetorum, C. prostratus, C. pumilus, C. purpureus, C. roderickii, C. sanguineus, C. sonomensis, C. spinosus, C. thyrsiflorus, C. tomentosus, C. velutinus, C. verrucosus |
C. americanus, C. arboreus, C. arcuatus, C. confusus, C. cordulatus, C. crassifolius, C. cuneatus, C. cyaneus, C. dentatus, C. divergens, C. diversifolius, C. fendleri, C. ferrisiae, C. foliosus, C. fresnensis, C. gloriosus, C. griseus, C. herbaceus, C. impressus, C. incanus, C. integerrimus, C. jepsonii, C. lemmonii, C. leucodermis, C. maritimus, C. martini, C. masonii, C. megacarpus, C. microphyllus, C. oliganthus, C. ophiochilus, C. otayensis, C. palmeri, C. papillosus, C. parryi, C. parvifolius, C. pauciflorus, C. perplexans, C. pinetorum, C. prostratus, C. pumilus, C. purpureus, C. roderickii, C. sanguineus, C. sonomensis, C. spinosus, C. thyrsiflorus, C. tomentosus, C. velutinus, C. verrucosus |
| Eastwood: Proc. Calif. Acad. Sci., ser. 4, 16: 361. (1927) |
Hoover & Roof: Four Seasons 2(1): 4. (1966) |
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CA
WildflowerSearch
iNaturalist
USDA Plants Database
