Flora of North America species comparison

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Ceanothus lemmonii

Lemmon's 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.
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.
Inflorescences

axillary or terminal, umbel-like to racemelike, 2–6.5 cm.
Flowers

sepals, petals, and nectary pale to deep blue.
Capsules

3–4 mm wide, lobed near apex;

valves smooth, crested.
2n

= 24.

Ceanothus lemmonii
Phenology Flowering Apr–May.
Habitat Rocky slopes and flats, open sites, conifer forests, oak and pine woodlands.
Elevation 200–1300 m. (700–4300 ft.)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
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.)
Source FNA vol. 12, p. 94.
Parent taxa Rhamnaceae > Ceanothus > subg. Ceanothus
Sibling taxa
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. 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
Name authority Parry: Proc. Davenport Acad. Nat. Sci. 5: 192. (1889) — (as lemmoni)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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