Ceanothus lemmonii |
Ceanothus maritimus |
|
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Lemmon's ceanothus |
maritime ceanothus, San Luis obispo ceanothus |
|
Habit | Shrubs, evergreen, 0.5–1 m. Stems ascending to spreading, not rooting at nodes; branchlets pale green to grayish green and glaucous, not thorn-tipped, round in cross section, flexible to ± rigid, sparsely villosulous. | Shrubs, 0.3–1 m, moundlike. |
Stems | usually prostrate to ascending, rarely erect, sometimes rooting at proximal nodes; branchlets reddish to grayish brown, rigid, smooth to slightly ridged, tomentulose, glabrescent. |
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Leaves | petiole 2–6 mm; blade flat, narrowly elliptic to oblong-elliptic, 13–35 × 6–15 mm, base cuneate to rounded, margins serrulate to denticulate most of length, not revolute, not wavy, teeth 34–45, apex acute to obtuse, abaxial surface pale green to grayish green and glaucous, villosulous, especially on veins, adaxial surface green, strigillose; pinnately veined or weakly 3-veined from base. |
not fascicled; petiole 1–2 mm; blade flat or cupped, obovate to oblong-obovate, 8–20 × 4–12(–15) mm, base cuneate, margins thick to revolute, usually entire, sometimes denticulate near apex, teeth 3–5, apex acute to rounded, truncate, or retuse, abaxial surface grayish green, tomentulose, adaxial surface green, glabrous. |
Inflorescences | axillary or terminal, umbel-like to racemelike, 2–6.5 cm. |
axillary, 0.8–1.5 cm. |
Flowers | sepals, petals, and nectary pale to deep blue. |
sepals and petals pale to deep blue, sometimes tinged with lavender; nectary dark purplish green. |
Capsules | 3–4 mm wide, lobed near apex; valves smooth, crested. |
5–8 mm wide, not to weakly lobed; valves smooth, horns subapical, minute, erect, intermediate ridges absent. |
2n | = 24. |
|
Ceanothus lemmonii |
Ceanothus maritimus |
|
Phenology | Flowering Apr–May. | Flowering Feb–May. |
Habitat | Rocky slopes and flats, open sites, conifer forests, oak and pine woodlands. | Maritime terraces and bluffs, alluvial or serpentine soils, coastal prairies, open sites in maritime chaparral. |
Elevation | 200–1300 m. (700–4300 ft.) | 10–60 m. (0–200 ft.) |
Distribution |
CA
|
CA |
Discussion | Ceanothus lemmonii occurs in the inner North Coast Ranges, Klamath Mountains, and the western slope of the Cascade Range and northern Sierra Nevada. H. McMinn (1944) reported putative hybrids with C. foliosus, C. integerrimus, and C. oliganthus var. sorediatus. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Ceanothus maritimus is restricted to a small area of coastal bluffs in northern San Luis Obispo County, growing in close proximity to another local endemic, C. hearstiorum (subg. Ceanothus). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 12, p. 94. | FNA vol. 12, p. 101. |
Parent taxa | Rhamnaceae > Ceanothus > subg. Ceanothus | Rhamnaceae > Ceanothus > subg. Cerastes |
Sibling taxa | ||
Name authority | Parry: Proc. Davenport Acad. Nat. Sci. 5: 192. (1889) — (as lemmoni) | Hoover: Leafl. W. Bot. 7: 111. (1953) |
Web links |