|
green-bark ceanothus, redheart
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barranca brush, wart-stem ceanothus, white coast ceanothus
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| Shrubs, sometimes arborescent, evergreen, 2–6 m. Stems erect, not rooting at nodes; branchlets green, thorn-tipped or not, round to ± angled in cross section, rigid, glabrous or sparsely puberulent. |
Shrubs, 1–3 m. Stems erect to ascending, not rooting at nodes; branchlets grayish brown, rigid, tomentulose. |
not fascicled; petiole 4–7 mm; blade ± cupped, elliptic to oblong, 11–35 × 8–29 mm, base cuneate to rounded, margins entire, apex obtuse to weakly retuse, abaxial surface pale green, not glaucous, sometimes puberulent on midribs, adaxial surface green, shiny, glabrous; pinnately veined. |
alternate, not fascicled, often crowded; petiole 1–3 mm; blade flat to cupped, widely obovate to suborbiculate, 5–14 × 3–10 mm, base cuneate to rounded, margins not revolute, entire to weakly denticulate distal to middle, teeth 9–16, apex truncate to retuse, abaxial surface pale green, sparsely strigillose, glabrescent, adaxial surface dark green, glabrous. |
axillary, paniclelike, 4–17 cm. |
axillary, 1–1.5 cm. |
sepals, petals, and nectary pale blue to blue. |
sepals and petals white; nectary black. |
4–6 mm wide, not lobed; valves smooth, not conspicuously viscid, not or weakly crested. |
4–6 mm wide, weakly lobed; valves smooth, horns minute or absent, intermediate ridges absent. |
= 24. |
= 24. |
|
|
|
|
| Flowering Jan–May. |
Flowering Jan–Apr. |
| Rocky slopes, coastal sage scrub, chaparral. |
Slopes, coastal mesas, chaparral, pine woodlands. |
| 60–900 m. (200–3000 ft.) |
20–800 m. (100–2600 ft.) |
|
CA; Mexico (Baja California)
|
CA; Mexico (Baja California)
|
Like Ceanothus incanus, plants of C. spinosus are polymorphic for the presence of thorn-tipped branchlets. Putative hybrids with C. thyrsiflorus and C. oliganthus var. sorediatus have been reported (M. Van Rensselaer and H. McMinn 1944). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Ceanothus verrucosus occurs from San Diego County to the foothills of the Sierra San Pedro Mártir and Cedros Island in northern Baja California, Mexico; its habitat is threatened by development and urbanization throughout its range. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
| FNA vol. 12, p. 86. |
FNA vol. 12, p. 97. |
| Rhamnaceae > Ceanothus > subg. Ceanothus |
Rhamnaceae > Ceanothus > subg. Cerastes |
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. 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. 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. 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 |
| Nuttall: in J. Torrey and A. Gray, Fl. N. Amer. 1: 267. (1838) |
Nuttall: in J. Torrey and A. Gray, Fl. N. Amer. 1: 267. (1838) |
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CA
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