Crataegus prona

Ashe

J. Elisha Mitchell Sci. Soc. 19: 17. 1903.

Endemic
Synonyms: Crataegus gravis Ashe
Treatment appears in FNA Volume 9. Treatment on page 570. Mentioned on page 568.

Shrubs or trees, 60 dm. Stems: twigs: new growth reddish green, glabrous, 1-year old reddish-brown, sometimes very dark, older mid gray; thorns on twigs recurved, 2-years old dark blackish red, ± shiny, ± slender, 3–5 cm. Leaves: petiole 2–4 cm, glabrous, eglandular or sparsely glandular; blade deltate-ovate to ovate, 4–7 cm length/width = 1.1–1.2, subcoriaceous, base broadly rounded to ± cuneate, lobes 3–5 per side, sinuses usually shallow, lobe apex acute, margins strongly serrate, veins 5 or 6 per side, apex acute to acuminate, surfaces glabrous except adaxial appressed-hairy young. Inflorescences 5–12-flowered; branches glabrous; bracteoles few, margins glandular. Flowers 16–18 mm diam.; hypanthium glabrous; sepals narrowly triangular, 5–6 mm, margins subentire, abaxially glabrous; stamens 6–10, anthers red to purple; styles 3 or 4. Pomes reddish orange to bright red, suborbicular to oblong, 8–11 mm diam.; sepals patent-reflexed or commonly erose; pyrenes 3 or 4, dorsally grooved.


Phenology: Flowering May; fruiting Sep–Oct.
Habitat: Brush
Elevation: 100–300 m

Distribution

V9 969-distribution-map.jpg

Ont., Ind., Mich., N.Y., Pa., Wis.

Discussion

Crataegus prona ranges from Wisconsin and Indiana through Michigan to New York and Pennsylvania.

Crataegus prona is similar to C. populnea but with proportionately wider leaves and narrow pomes. When better known, it may prove the same as C. populnea. Crataegus gravis is a form with more oblong fruit and smaller leaves with sharper lobes.

Selected References

None.

Lower Taxa

None.
... more about "Crataegus prona"
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
red +  and purple +
James B. Phipps +
orangebrown +
thin-exfoliating +  and corrugated +
compound +  and simple +
opposite +  and alternate +
broadly rounded +  and more or less cuneate +
7 cm70 mm <br />0.07 m <br /> (8 cm80 mm <br />0.08 m <br />) +
4cm +  and 7cm +
deltate-ovate +  and ovate +
2 cm20 mm <br />0.02 m <br /> (7 cm70 mm <br />0.07 m <br />) +
adnate +  and distinct +
crowded +, scattered +  and alternate +
Ont. +, Ind. +, Mich. +, N.Y. +, Pa. +  and Wis. +
not +  and aggregated +
100–300 m +
1.6 cm16 mm <br />0.016 m <br /> (1.8 cm18 mm <br />0.018 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 />) +
gray +, dark +, reddish-brown +  and reddish green +
older +, old +  and new +
Brush +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
deciduous +
subentire +
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 +
glandular +  and eglandular +
sessile-glandular +  and glandular +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Flowering May +  and fruiting Sep–Oct. +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
pruinose +
reddish orange +  and bright red +
0.8 cm8 mm <br />0.008 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
suborbicular +  and oblong +
J. Elisha Mitchell Sci. Soc. +
not arillate +
persistent +
free +  and distinct +
patent-reflexed +
triangular +
nonaccrescent +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
1-50-flowered +  and few-leaved +
free +  and distinct +
branched +  and simple +
persistent +
distinct +
exsert +  and lateral +
elongate +
Crataegus gravis +
Crataegus prona +
Crataegus (sect. Coccineae) ser. Populneae +
species +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
red +  and dark blackish +
straight +
slender +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
craspedodromous +
inconspicuous +
less erect +  and oblique +
1 +  and several +
straight +
determinate +
6 +  and 5 +
tree +  and shrub +