Higher Taxonomy
Common Name: BUCKTHORN FAMILY Habit: [Perennial herb] shrub, tree, generally erect, often thorny. Leaf: simple, generally alternate, often clustered on short-shoots; stipules generally present, occasionally modified into spines; generally petioled; blade pinnate-veined or 1--5-ribbed from base. Inflorescence: cyme, panicle, umbel, or flowers 1 or clustered in axils or on short-shoots. Flower: generally bisexual, radial; hypanthium subtending, surrounding, or partly fused to ovary; sepals 4--5; petals 0, 4--5, generally clawed; stamens 0, 4--5, alternate sepals, attached to hypanthium top, each generally fitting into a petal concavity; disk (0 or) between stamens, ovary, thin to fleshy, entire or lobed, free from ovary, adherent or fused to hypanthium; ovary superior or +- inferior, chambers [1]2--4, 1--2-ovuled, style 1, stigma entire or 2--3-lobed. Fruit: capsule, drupe. Genera In Family: 50--52 genera, 950 species: especially tropics, subtropics some cultivated (Ceanothus; Frangula; Rhamnus; Ziziphus). eFlora Treatment Author: John O. Sawyer, Jr., except as noted Scientific Editor: Steve Boyd, Thomas J. Rosatti.
| Common Name: CALIFORNIA-LILAC Habit: Shrub, tree-like or not, generally erect or mat- to mound-like. Stem: branches generally arranged like leaves; twigs thorn-like or not, generally not angled. Leaf: alternate or opposite, some clustered on short-shoots or not, deciduous or evergreen; stipules scale-like, thin, deciduous, or knob-like, corky, thick, base persistent; blade flat or wavy, tip generally acute to obtuse, margin thick (i.e., thicker than adjacent blade) or not, rolled under or not, wavy or not, entire or gland- or sharp-toothed, glands generally dark, teeth pale, alternate blade 1--3-ribbed from base, generally thin, opposite blade 1-ribbed from base, thick, firm. Inflorescence: umbel-, raceme-, or panicle-like aggregations of few-flowered clusters, axillary or terminal; pedicels white to deep blue or pink. Flower: conspicuous, generally < 5 mm; hypanthium surrounding fleshy disk below ovary base, in fruit thick, not splitting; sepals generally 5, lance-deltate, incurved, colored like petals, persistent; petals generally 5, blade hood-like, white to deep blue or pink; stamens generally 5, opposite petals; ovary 1/2-inferior, 3-lobed, chambers 3, each 1-ovuled, styles 3. Fruit: capsule, +- spheric, generally +- 3-lobed, generally smooth, 3-ridged or not, horned or not. Seed: 3, 2--5 mm. Species In Genus: +- 55 species: North America. Etymology: (Greek: thorny pl) Note: Hybrids possibly common (named hybrids not recognized here), discussed in Fross & Wilken; possible hybrid forms do not key easily. eFlora Treatment Author: Dieter H. Wilken & Dylan O. Burge Reference: Fross & Wilken 2006 Ceanothus. Timber Press; Burge et al. 2015 Syst Bot 40:950--961.
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Ceanothus cyaneus Eastw.
NATIVEHabit: Plant open, < 3 m. Stem: ascending to erect; twigs flexible, not thorn-like, green, +- dark-papillate, angled, internodes ridged. Leaf: alternate, evergreen; stipules scale-like; petiole 2--6 mm; blade 15--45 mm, 15--20 mm wide, generally < 2 × width, +- ovate-elliptic, adaxially green, glabrous, abaxially pale green, +- glaucous, glabrous except veins puberulent, margin +- serrate, teeth 23--58, minutely gland-tipped or not. Inflorescence: panicle-like, 5--30 cm. Flower: bright blue. Fruit: 3--5 mm wide, +- 3-ridged distally; horns 0. Chromosomes: 2n=24. Ecology: Slopes, ridges, chaparral; Elevation: 45--1050 m. Bioregional Distribution: s PR (San Diego Co.); Distribution Outside California: northern Baja California. Flowering Time: Apr--Jun Jepson eFlora Author: Dieter H. Wilken & Dylan O. Burge Reference: Fross & Wilken 2006 Ceanothus. Timber Press; Burge et al. 2015 Syst Bot 40:950--961. Jepson Online InterchangeListed on CNPS Rare Plant Inventory
Previous taxon: Ceanothus cuneatus var. ramulosusNext taxon: Ceanothus decornutus
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Citation for this treatment: Dieter H. Wilken & Dylan O. Burge 2016, Ceanothus cyaneus, in Jepson Flora Project (eds.) Jepson eFlora, Revision 4, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=18438, accessed on February 23, 2019.
Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on February 23, 2019.
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No expert verified images found for Ceanothus cyaneus. |
Geographic subdivisions for Ceanothus cyaneus:
s PR (San Diego Co.); |
Markers link to CCH specimen records. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).
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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month
Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time.
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