Ceanothus lemmonii |
Ceanothus integerrimus |
|
---|---|---|
Lemmon's ceanothus |
deer brush |
|
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, deciduous, 1.5–3 m. Stems ascending to erect, not rooting at nodes; branchlets pale green, not thorn-tipped, round in cross section, flexible, glabrous or strigillose. |
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 3–12 mm; blade flat, lanceolate, elliptic, oblong-elliptic, or ovate, (10–)20–80 × 10–45 mm, base rounded, margins entire or denticulate distally, teeth 3–5, apex acute to obtuse, abaxial surface pale green, glabrate or puberulent, especially on veins, sometimes glabrescent, adaxial surface green, dull, glabrous or sparsely puberulent; usually 3-veined from base, rarely pinnately veined. |
Inflorescences | axillary or terminal, umbel-like to racemelike, 2–6.5 cm. |
usually terminal, rarely axillary, racemelike or paniclelike, 5–25 cm. |
Flowers | sepals, petals, and nectary pale to deep blue. |
sepals, petals, and nectary usually white or pale to dark blue, rarely pink. |
Capsules | 3–4 mm wide, lobed near apex; valves smooth, crested. |
4–5 mm wide, lobed; valves smooth, viscid, not or weakly crested. |
2n | = 24. |
= 24. |
Ceanothus lemmonii |
Ceanothus integerrimus |
|
Phenology | Flowering Apr–May. | Flowering May–Jul. |
Habitat | Rocky slopes and flats, open sites, conifer forests, oak and pine woodlands. | Rocky slopes, open sites, chaparral, conifer and mixed evergreen forests. |
Elevation | 200–1300 m. (700–4300 ft.) | 25–2600 m. (100–8500 ft.) |
Distribution |
CA
|
AZ; CA; NM; OR; WA
|
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.) |
G. T. Benson (1930) recognized four varieties in Ceanothus integerrimus, based on flower color, leaf blade shape, venation, and indumentum. With the exception of regional clines in indumentum density, N. C. Coile (1988) was unable to detect consistent patterns of variation correlated with ecological or geographical distribution. The types of C. integerrimus (D. Douglas in 1831) and C. andersonii (C. C. Parry in 1888) are notable in that they bear oblong leaf blades with one principal vein from the base; the basal pair of secondary veins are shorter than those distal to it and relatively short compared to those in leaves elsewhere in the species. This venation is restricted to only a few specimens from near Ben Lomond, Santa Cruz Mountains, California, and has not been seen since the collection by Parry. W. L. Jepson (1909–1943, vol. 2) suggested that the venation pattern may be correlated with the oblong leaf shape that is shown by the type specimens. Young shoots of Ceanothus integerrimus were used by Native Americans in basketry and for arrow foreshafts (D. E. Moerman 1998). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 12, p. 94. | FNA vol. 12, p. 85. |
Parent taxa | Rhamnaceae > Ceanothus > subg. Ceanothus | Rhamnaceae > Ceanothus > subg. Ceanothus |
Sibling taxa | ||
Synonyms | C. andersonii, C. integerrimus var. californicus, C. integerrimus var. macrothyrsus, C. integerrimus var. puberulus | |
Name authority | Parry: Proc. Davenport Acad. Nat. Sci. 5: 192. (1889) — (as lemmoni) | Hooker & Arnott: Bot. Beechey Voy., 329. (1838) |
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