|
Bolinas ceanothus, Mason's ceanothus
|
feltleaf ceanothus, island ceanothus
|
| Shrubs, 0.6–2 m. Stems erect to ascending, not rooting at nodes; branchlets dark brown, rigid, ± tomentulose. |
Shrubs, sometimes arborescent, evergreen, 2–7 m. Stems erect, not rooting at nodes; branchlets brown, not thorn-tipped, round or slightly angled in cross section, flexible, tomentulose. |
not fascicled; petiole 1–2 mm; blade flat, usually elliptic or oval, sometimes suborbiculate, 7–21 × 4–13 mm, base rounded to ± cuneate, margins not revolute, denticulate most of length, teeth 9–17, apex obtuse, rounded to truncate, abaxial surface pale green to grayish green, strigose on veins, glabrate, adaxial surface dark green, glabrous. |
petiole 8–25 mm; blade not aromatic, flat to cupped, widely ovate to elliptic, 25–80 × 20–40 mm, herbaceous, not resinous, base rounded, margins serrulate, teeth (35–)40–65, apex acute to obtuse, abaxial surface pale green, usually densely tomentulose, rarely glabrate, adaxial surface green, dull, glabrous or sparsely puberulent; 3-veined from base. |
axillary, 1–2.5 cm. |
axillary or terminal, paniclelike, conic, 5–12 cm. |
sepals, petals, and nectary deep blue to purple. |
sepals and petals pale blue to blue; nectary blue to dark blue. |
3–4 mm wide, not lobed; valves smooth, horns apical, minute, not rugose, intermediate ridges absent. |
6–8 mm wide, ± lobed; valves rugose, ± viscid, weakly crested. |
= 24. |
= 24. |
|
|
|
|
| Flowering Feb–Apr. |
Flowering Feb–May. |
| Soils derived from serpentine, chaparral, pine forests. |
Rocky slopes, ridges, chaparral, oak woodlands, closed-cone pine woodlands. |
| 100–500 m. (300–1600 ft.) |
60–600 m. (200–2000 ft.) |
|
CA
|
CA; Mexico (Baja California)
|
Ceanothus masonii occurs only at a few localities on Bolinas Ridge, Marin County. With the exception of its leaf morphology, it bears a close resemblance to C. gloriosus var. exaltatus. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Ceanothus arboreus is restricted to Santa Catalina, Santa Cruz, and Santa Rosa islands, California, and Guadalupe Island, Baja California. Plants with glabrate leaves on Santa Cruz and Santa Rosa Islands have been called C. arboreus var. glaber. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
| FNA vol. 12, p. 103. |
FNA vol. 12, p. 88. |
| Rhamnaceae > Ceanothus > subg. Cerastes |
Rhamnaceae > Ceanothus > subg. Ceanothus |
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. 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. 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, C. verrucosus |
|
C. arboreus var. glaber |
| McMinn: Madroño 6: 171. (1942) |
Greene: Bull. Calif. Acad. Sci. 2: 144. (1886) |
| |
CA
WildflowerSearch
iNaturalist
USDA Plants Database
