Crataegus punctata

Jacquin

Hort. Bot. Vindob. 1: 10, plate 28. 1770.

Common names: Dotted or white haw aubépine ponctuée
EndemicIllustrated
Synonyms: Crataegus punctata var. microphylla Sargent
Treatment appears in FNA Volume 9. Treatment on page 542. Mentioned on page 497, 522, 523, 543, 546, 635, 637.

Shrubs or trees, 40–80 dm. Stems: compound thorns on trunks present; twigs: new growth pubescent, 1-year old pale gray; thorns on twigs usually numerous, ± straight to ± recurved, 1-year old gray, slender, 2–5 cm. Leaves: petiole 0.5–1.5 cm, length 12–20% blade, winged distally, pubescent young, eglandular; blade narrowly obovate to oblanceolate or broadly elliptic, 4–7 cm, equal to or less than 1.5 times as long as wide, base narrowly cuneate, lobes 0 or 5–7 per side distal to widest part of leaf, lobe apex acute, margins sharply serrate to sometimes crenate distally, teeth frequency decreasing proximally, veins 7–10 per side, impressed young, apex subacute to obtuse, abaxial surface sparsely short-pilose except on veins, adaxial matte, sparsely short-pilose, glabrate mature. Inflorescences 10–25-flowered, compact; branches appressed-hairy; bracteoles membranous, margins sessile or short-stipitate-glandular. Flowers 14–19 mm diam.; hypanthium densely pubescent; sepals 6–8 mm, margins entire or subentire, adaxially pubescent proximally; stamens (10–) 20, anthers cream, rose, or pink-purple; styles 3–5. Pomes usually deep burgundy, sometimes scarlet, orange, or yellow, suborbicular, 11–16 (–20) mm diam., punctate, traces of pubescence remaining; sepals reflexed; pyrenes 3–5.2n = 34.


Phenology: Flowering May–Jun; fruiting Sep–Oct.
Habitat: Open sites, fencerows, successional fields, brush, light shade in woodlands, edges of mesic hardwood forests, brushy secondary forests
Elevation: 30–1800 m

Distribution

V9 914-distribution-map.jpg

N.B., Ont., Que., Conn., Ill., Ind., Iowa, Ky., Maine, Mass., Mich., Minn., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., Tenn., Vt., Va., W.Va., Wis.

Discussion

Crataegus punctata is a common northeastern North American hawthorn, ranging across the northeast quarter of the United States and adjacent Canada to New Brunswick, to North Carolina and Tennessee, occurring mainly above 1000 m in the southern Appalachians. South of New Jersey, it is not found near the coast. The species may occur in nearly pure populations of up to several thousand individuals. The best growth is in sunny sites near streams.

Crataegus punctata is recognized among sympatric species by its matte green leaves (unlike the somewhat similar C. crus-galli) with impressed veins, tabulate branching when grown in the open, usually burgundy fruits with pale dots; the whitish or ashy gray twigs present a distinctive feature in winter (J. B. Phipps et al. 2003, plate 55), responsible for the common name white haw. The similar C. collina, with an allopatric distribution and much earlier flowering season, is often confused with it but is readily differentiated (see key and discussion for that species). Extension-shoot leaves of C. punctata may be very deeply incised with veins to the sinuses, a characteristic not found in C. collina.

Some forms of Crataegus punctata bear scarlet or yellow (var. aurea Aiton) fruit. Hairier forms, especially hairier leaves, have been named var. canescens Britton; very small-leaved forms have been called var. microphylla Sargent. Nearly glabrous forms, all with somewhat glossy foliage, less coarse leaf toothing than C. punctata, and ten stamens, occur sporadically and have been named C. grandis Ashe and var. pausiaca (Ashe) E. J. Palmer. They are probably hybrids with C. crus-galli, as is the similar C. ×disperma, treated under interserial hybrids. The very rare C. ×puberis Sargent is perhaps a hybrid with C. macrosperma, C. ×kellermanii Sargent a hybrid with C. pruinosa, and C. ×neobaxteri Sargent a hybrid with a species of ser. Rotundifoliae.

Selected References

None.

Lower Taxa

None.
... more about "Crataegus punctata"
glabrate +  and short-pilose +
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
pink-purple +, rose +  and cream +
James B. Phipps +
Jacquin +
orangebrown +
thin-exfoliating +  and corrugated +
compound +  and simple +
opposite +  and alternate +
cuneate +
Crataegus sect. Punctatae +
6 cm60 mm <br />0.06 m <br /> (8 cm80 mm <br />0.08 m <br />) +
narrowly obovate +  and oblanceolate or broadly elliptic +
4 cm40 mm <br />0.04 m <br /> (7 cm70 mm <br />0.07 m <br />) +
appressed-hairy +
adnate +  and distinct +
crowded +, scattered +  and alternate +
Dotted or white haw +  and aubépine ponctuée +
N.B. +, Ont. +, Que. +, Conn. +, Ill. +, Ind. +, Iowa +, Ky. +, Maine +, Mass. +, Mich. +, Minn. +, N.H. +, N.J. +, N.Y. +, N.C. +, Ohio +, Pa. +, R.I. +, Tenn. +, Vt. +, Va. +, W.Va. +  and Wis. +
not +  and aggregated +
30–1800 m +
1.4 cm14 mm <br />0.014 m <br /> (1.9 cm19 mm <br />0.019 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 />) +
old +  and new +
Open sites, fencerows, successional fields, brush, light shade in woodlands, edges of mesic hardwood forests, brushy secondary forests +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
deciduous +
pubescent +  and short-stipitate-glandular +
subentire +, entire +, crenate +  and serrate to sometimes +
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 +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Flowering May–Jun +  and fruiting Sep–Oct. +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
pruinose +
yellow +, orange +, scarlet +  and burgundy +
1.1 cm11 mm <br />0.011 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
pubescent +  and glabrous +
suborbicular +
Hort. Bot. Vindob. +
not arillate +
persistent +
free +  and distinct +
triangular +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
1-50-flowered +  and few-leaved +
Endemic +  and Illustrated +
free +  and distinct +
branched +  and simple +
persistent +
distinct +
exsert +  and lateral +
elongate +
glabrous +  and tomentose +
Crataegus punctata var. microphylla +
Crataegus punctata +
Crataegus (sect. Coccineae) ser. Punctatae +
species +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
straight +
less straight +  and more or less recurved +
slender +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
craspedodromous +  and gland-tipped +
inconspicuous +
less erect +  and oblique +
1 +  and several +
determinate +
not +  and pubescent +
7 +  and 10 +
tree +  and shrub +