Difference between revisions of "Crataegus laevigata"
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 2: 630. 1825.
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|elevation=10–50 m | |elevation=10–50 m | ||
|distribution=Wash.;Europe. | |distribution=Wash.;Europe. | ||
| + | |introduced=true | ||
|discussion=<p>In the flora area, <i>Crataegus laevigata</i> is known only from the San Juan Islands; alleged wild records from elsewhere in North America proved to be misidentifications. The species is widespread in central Europe and scarce beyond that. Woodland hawthorn is more shade-tolerant than many other species, hence the common name.</p><!-- | |discussion=<p>In the flora area, <i>Crataegus laevigata</i> is known only from the San Juan Islands; alleged wild records from elsewhere in North America proved to be misidentifications. The species is widespread in central Europe and scarce beyond that. Woodland hawthorn is more shade-tolerant than many other species, hence the common name.</p><!-- | ||
--><p><i>Crataegus laevigata</i> has more shallowly incised leaves and more obtuse lobes than other species in ser. <i>Crataegus</i>.</p><!-- | --><p><i>Crataegus laevigata</i> has more shallowly incised leaves and more obtuse lobes than other species in ser. <i>Crataegus</i>.</p><!-- | ||
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|publication year=1825 | |publication year=1825 | ||
|special status=Introduced | |special status=Introduced | ||
| − | |source xml=https:// | + | |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V9/V9_832.xml |
|subfamily=Rosaceae subfam. Amygdaloideae | |subfamily=Rosaceae subfam. Amygdaloideae | ||
|tribe=Rosaceae tribe Gillenieae | |tribe=Rosaceae tribe Gillenieae | ||
Revision as of 00:33, 28 May 2020
Shrubs or trees, 80 dm. Stems: twigs: new growth sparsely villous or glabrous; thorns on twigs few to numerous, determinate or indeterminate, stout, 1 cm. Leaves: petiole slender, 0.8–2 cm, glabrous, eglandular; blade broadly elliptic to obovate, 1.4–5.8 cm, base cuneate, lobes 1 or 2 per side, sinuses ± shallow, lobe apex obtuse, margins serrate except proximally, veins 3–7 per side, apex obtuse, abaxial surface pale green, ± pilose along veins and in axils, adaxial ± lustrous dark green, pilose on veins. Inflorescences 3–11-flowered, lax; branches glabrous; bracteole margins irregularly denticulate, bearing few to numerous glands. Flowers 12–22 mm diam.; hypanthium glabrous [to lanate]; sepals 1.5–2.5 mm, margins entire, apex acute; stamens 20, anthers purple; styles 2 or 3. Pomes bright red, orbicular or ± cylindric, 6–14 mm diam.; sepals recurved or spreading; pyrenes 2 or 3. 2n = 34.
Phenology: Flowering Apr–May; fruiting Sep–Oct.
Habitat: Woodlands, scrub, hedges
Elevation: 10–50 m
Distribution
Introduced; Wash., Europe.
Discussion
In the flora area, Crataegus laevigata is known only from the San Juan Islands; alleged wild records from elsewhere in North America proved to be misidentifications. The species is widespread in central Europe and scarce beyond that. Woodland hawthorn is more shade-tolerant than many other species, hence the common name.
Crataegus laevigata has more shallowly incised leaves and more obtuse lobes than other species in ser. Crataegus.
Pink- or red-petaled cultivated forms attributed to Crataegus laevigata are important ornamentals; they are usually cultivars of C. ×media Bechstein. Similar colored cultivars of true C. laevigata are scarce in North America.
Selected References
None.