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.

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

V9 832-distribution-map.jpg

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.

Lower Taxa

None.
... more about "Crataegus laevigata"
dark green +  and pale green +
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
pink +  and purple +
James B. Phipps +
(Poiret) de Candolle in A. P. de Candolle and A. L. P. P. de Candolle +
exfoliating +
compound +  and simple +
opposite +  and alternate +
cuneate +
Mespilus laevigata +
8 cm80 mm <br />0.08 m <br /> (12 cm120 mm <br />0.12 m <br />) +
broadly elliptic +  and obovate +
1.4 cm14 mm <br />0.014 m <br /> (5.8 cm58 mm <br />0.058 m <br />) +
adnate +  and distinct +
crowded +, scattered +  and alternate +
Woodland hawthorn +, aubépine épineuse +  and aubépine à deux styles +
Wash. +  and Europe +
not +  and aggregated +
10–50 m +
1.2 cm12 mm <br />0.012 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
unisexual +  and bisexual +
not +  and aggregated +
not +  and aggregated +
yellow +  and red or purplish +
0.6 cm6 mm <br />0.006 m <br /> (2 cm20 mm <br />0.02 m <br />) +
glabrous +  and villous +
Woodlands, scrub, hedges +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
deciduous +
entire +  and serrate +
3 +  and 7 +
with small protuberances or pegs +, denticulate +  and entire +
inferior +  and superior +
biseriate +  and clustered +
collateral +  and basal +
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
elliptic +  and circular +
0 (?) +  and 4 (?) +
free +  and distinct +
post-mature +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Flowering Apr–May +  and fruiting Sep–Oct. +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
bright red +
0.6 cm6 mm <br />0.006 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
cylindric +  and orbicular +
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. +
not arillate +
persistent +
free +  and distinct +
spreading +  and recurved +
triangular +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
1-50-flowered +  and few-leaved +
craspedodromous +
Introduced +
free +  and distinct +
branched +  and simple +
elongate +
persistent +
distinct +
exsert +  and lateral +
elongate +
glabrous +  and tomentose +
Crataegus oxyacanthoides +
Crataegus laevigata +
Crataegus (sect. Crataegus) ser. Crataegus +
species +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
curved +  and straight +
indeterminate +  and determinate +
slender +
1 cm10 mm <br />0.01 m <br /> (?) +
craspedodromous +  and gland-tipped +
inconspicuous +
exfoliating +
1 +  and few +
indeterminate +  and determinate +
few +  and numerous +
2 +  and 8 +
tree +  and shrub +