Crataegus schuettei

Ashe

J. Elisha Mitchell Sci. Soc. 17: 7. 1901.

Common names: Schuette or royal hawthorn aubépine de Schuette
EndemicIllustrated
Treatment appears in FNA Volume 9. Treatment on page 565. Mentioned on page 562, 563, 566, 570.

Shrubs or trees, 40–70 dm. Stems: twigs: new growth reddish, glabrous, 1-year old shiny reddish-brown, older dull gray; thorns on twigs 1-year old glossy, dark-brown to blackish, ± stout, 3–6 cm. Leaves: petiole length 50–60% blade, usually glandular; blade ovate to oblong-ovate or narrowly ovate (ovate on extension shoots), 3–6 cm, base truncate, rounded, or cuneate, lobes 4 or 5 per side, sinuses moderately deep, lobe apex acute to acuminate, margins serrate, teeth 1 mm, veins 5 or 6 per side, apex acute, adaxial surface sparsely to densely scabrous-pubescent young, early glabrescent. Inflorescences 4–10-flowered; branches usually glabrous, rarely sparsely pubescent; bracteoles absent or few, linear. Flowers 15–26 mm diam.; hypanthium glabrous; sepals 3–4 mm, margins subentire or glandular-serrate, abaxially glabrous; stamens 20, anthers red; styles 3–5. Pomes red, ellipsoid to suborbicular, 8–20 mm diam., succulent; sepals ± erose or erect-patent; pyrenes 3–5, dorsally grooved. 2n = 51.

Distribution

V9 957-distribution-map.jpg

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

Discussion

Varieties 4 (4 in the flora).

Crataegus schuettei ranges from Wisconsin through the southern Great Lakes to southern New England, to North Carolina. Recent discoveries add the Ozarks and may add Minnesota (see discussion under C. fluviatilis) to the documented range. Variety schuettei closely resembles C. macrosperma, differing principally in its often larger flowers, 20 stamens, usually glandular-serrate sepal margins, and larger fruit but is not nearly so variable as C. macrosperma; the other varieties are very rare. Still, the four varieties are fairly distinct. Crataegus basilica appears to be the southern form of the type variety and is very like sympatric C. macrosperma except for stamen number.

Selected References

None.

Key

1 Inflorescence branches sparsely pubescent; leaf blades narrowly ovate, bases ± narrowly cuneate. Crataegus schuettei var. cuneata
1 Inflorescence branches glabrous; leaf blades ± ovate to ovate-oblong, bases subtruncate or broadly cuneate to rounded > 2
2 Flowers 24–26 mm diam.; pomes 15–20 mm diam. Crataegus schuettei var. gigantea
2 Flowers 15–20 mm diam.; pomes 8–15 mm diam > 3
3 Leaf blades ± ovate, sinuses shallow (max LII 15–20%), proximal lobes almost never most deeply separated, spreading at 45º–60º. Crataegus schuettei var. schuettei
3 Leaf blades ovate to ovate-oblong, proximal sinuses deep (max LII 30–40%), proximal lobes the most deeply separated, spreading at 60º–80º. Crataegus schuettei var. ferrissii
... more about "Crataegus schuettei"
appressed-scabrous-pubescent +
glabrescent +  and scabrous-pubescent +
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
James B. Phipps +
orangebrown +
thin-exfoliating +  and corrugated +
compound +  and simple +
opposite +  and alternate +
cuneate +, rounded +  and truncate +
Tenuifoliae +
8 cm80 mm <br />0.08 m <br /> (12 cm120 mm <br />0.12 m <br />) +
ovate +  and oblong-ovate or narrowly ovate +
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
pubescent +  and glabrous +
adnate +  and distinct +
crowded +, scattered +  and alternate +
Schuette or royal hawthorn +  and aubépine de Schuette +
Ont. +, Que. +, Ark. +, Conn. +, Ill. +, Ind. +, Ky. +, Maine +, Mass. +, Md. +, Mich. +, Minn. +, Mo. +, N.C. +, N.H. +, N.J. +, N.Y. +, Ohio +, Pa. +, R.I. +, Tenn. +, Va. +, Vt. +, W.Va. +  and Wis. +
not +  and aggregated +
1.5 cm15 mm <br />0.015 m <br /> (2.6 cm26 mm <br />0.026 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 +, reddish-brown +  and reddish +
older +, old +  and new +
dull +  and shiny +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
deciduous +
eglandular +  and craspedodromous +
glandular-serrate +  and subentire +
6 cm60 mm <br />0.06 m <br /> (8 cm80 mm <br />0.08 m <br />) +
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
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 +
eglandular +  and sessile-glandular +
glandular +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
pruinose +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
ellipsoid +  and suborbicular +
succulent +
J. Elisha Mitchell Sci. Soc. +
not arillate +
persistent +
free +  and distinct +
erect-patent +
triangular +
nonaccrescent +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 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 sect. Tenuifoliae +
Crataegus schuettei +
Crataegus (sect. Coccineae) ser. Tenuifoliae +
species +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
dark-brown +  and blackish +
straight +
stout +  and slender +
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
craspedodromous +  and gland-tipped +
1 cm10 mm <br />0.01 m <br /> (?) +
inconspicuous +
less erect +  and oblique +
1 +  and several +
straight +
determinate +
glabrescent +  and pilose +
6 +  and 5 +
tree +  and shrub +