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Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
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Annual to tree, glandular or not. Leaf: simple to palmately or pinnately compound, generally alternate; stipules free to fused (0), persistent to deciduous. Inflorescence: cyme, raceme, panicle, cluster, or flowers 1; bractlets on pedicel ("pedicel bractlets") generally 0–3(many), subtended by bract or generally not. Flower: generally bisexual, radial; hypanthium free or fused to ovary, saucer- to funnel-shaped, subtending bractlets ("hypanthium bractlets") 0–5, alternate sepals; sepals generally 5; petals generally 5, free; stamens (0,1)5–many, anther pollen sacs generally 2; pistils (0)1–many, simple or compound, ovary superior to inferior, styles 1–5. Fruit: 1–many per flower, achene (fleshy-coated or not), follicle, drupe, or pome with generally papery core, occasionally drupe-like with 1–5 stones. Seed: generally 1–5 (per fruit, not per flower).
110 genera, ± 3000 species: worldwide, especially temperate; many cultivated for ornamental, fruit, especially Cotoneaster, Fragaria, Malus, Prunus, Pyracantha, Rosa, Rubus. [Potter et al. 2007 Plant Syst Evol 266:5–43] Number of teeth is per leaf or leaflet, not per side of leaf or leaflet, except in Drymocallis. —Scientific Editors: Daniel Potter, Thomas J. Rosatti.
Unabridged references: [Robertson 1974 J Arnold Arbor 55:303–332, 344–401, 611–662]
Key to Rosaceae
Shrub, tree, thorny. Leaf: simple, alternate, petioled, ± ovate, generally ± lobed above middle, toothed, deciduous. Inflorescence: panicle on short-shoot tips, domed; pedicel bractlets several to many, ± 5 mm, narrow, margins glandular. Flower: hypanthium urn-shaped, bractlets 0; sepals small, margins entire to finely toothed, generally glandular; petals white; stamens ± 10 or 20; ovary inferior, styles 1–5, free. Fruit: pome, drupe-like, red to black, generally lighter in color before fully mature, core of 1–5 laterally pitted stones [or not]; sepals reflexed [or not].Key to Crataegus
± 200 species: northern temperate. (Greek: hard, for wood) [Phipps & O'Kennon 2002 Sida 20:115–144] Several species cultivated, escaped.
Unabridged note: Various species cultivated in arboreta, escaped elsewhere; several species in retail commerce, e.g., Crataegus ×media Sarg. cvs (generally misnamed as Crataegus laevigata (Poir.) DC. or Crataegus oxyacantha L.), Crataegus monogyna cvs, Crataegus phaenopyrum (L. f.) Medik.
Stem: thorns 8–12 mm. Leaf: of short-shoots 3–8 cm, wide-elliptic to -ovate or narrow-obovate, base wedge-shaped, unlobed to shallowly lobed, thin to ± leathery. Inflorescence: glabrous. Flower: 12–13 mm wide; sepals distally glandular-serrate; stamens ± 20, anthers pink; styles 3–5. Fruit: 10–12 mm diam, ± spheric, deep purple to black, stones 3–5.
2n=34,51,68. Streamsides in meadows, scrub, forest; 30–1250 m. Klamath Ranges, North Coast Ranges, Cascade Range, High Sierra Nevada, n Central Coast (Marin Co.); to Alaska, Montana. [Crataegus suksdorfii (Sarg.) Kruschke] May–Jun [Online Interchange]
Previous taxon: Crataegus douglasii
Next taxon: Crataegus monogyna
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Dec 6 2013
Citation for this treatment: [Author of taxon treatment] 2012. Crataegus gaylussacia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=91319, accessed on Dec 6 2013
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|Bioregions in which Crataegus gaylussacia occurs||Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.|
Chart based on elevation range in eFlora and elevations and coordinates of CCH records.
Data provided by the participants of the Consortium of California Herbaria.
Note: About half of the CCH records include both elevation and coordinates.
| Data provided by the participants of the Consortium of California Herbaria.
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