Difference between revisions of "Crataegus laevigata"

(Poiret) de Candolle in A. P. de Candolle and A. L. P. P. de Candolle

in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 2: 630. 1825.

Common names: Woodland hawthorn aubépine épineuse aubépine à deux styles
Introduced
Basionym: Mespilus laevigata Poiret in J. Lamarck et al., Encycl. 4: 439. 1798
Synonyms: Crataegus oxyacanthoides Thuillier
Treatment appears in FNA Volume 9. Treatment on page 497. Mentioned on page 496.
FNA>Volume Importer
FNA>Volume Importer
(No difference)

Revision as of 20:38, 24 September 2019

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

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.

Lower Taxa

None.
... more about "Crataegus laevigata"
James B. Phipps +
(Poiret) de Candolle in A. P. de Candolle and A. L. P. P. de Candolle +
Mespilus laevigata +
Woodland hawthorn +, aubépine épineuse +  and aubépine à deux styles +
Wash. +  and Europe. +
10–50 m +
Woodlands, scrub, hedges +
Flowering Apr–May +  and fruiting Sep–Oct. +
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. +
Introduced +
Crataegus oxyacanthoides +
Crataegus laevigata +
Crataegus (sect. Crataegus) ser. Crataegus +
species +