Crataegus ×lucorum

Crataegus ×lucorum Sargent

Bot. Gaz. 31: 227. 1901.

Endemic
Treatment appears in FNA Volume 9. Treatment on page 640. Mentioned on page 561, 562, 641.

Shrubs or trees, 50–70 dm. Stems: twigs: new growth slightly villous, 1-year old brown, older dark gray-brown; thorns on twigs ± straight to ± recurved, 2-years old bright redbrown, slender to moderately stout, 4–5 cm. Leaves deciduous; petiole very slender, length 50–60% blade, glandular; blade ovate to obovate, 4–5 cm, thin, base rounded to broadly cuneate, lobes 3 or 4 per side, sinuses shallow to moderately deep, lobe apex acute, margins serrate, venation craspedodromous, veins 4 or 5 per side, apex acute, surfaces glabrous. Inflorescences 5–10-flowered; branches sparsely villous; bracteoles caducous, ± linear, membranous, margins glandular-serrate. Flowers 18 mm diam.; hypanthium glabrous; sepal margins glandular-serrate; stamens 20, anthers purple; styles 4 or 5. Pomes red, ± obovoid, 12–16 mm; flesh succulent; pyrenes dorsally grooved, sides plane.


Phenology: Flowering May; fruiting Sep–Oct.
Habitat: Brush, borders of woods, stream banks
Elevation: 200–300 m

Distribution

V9 1102-distribution-map.jpg

Ont., Ill., Ind., N.Y., Ohio.

Discussion

Crataegus ×lucorum is scattered from Illinois to New York, exhibiting a mixture of characteristics of ser. Coccineae and ser. Tenuifoliae.

Selected References

None.

Lower Taxa

None.
... more about "Crataegus ×lucorum"
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
James B. Phipps +
Crataegus ×lucorum Sargent +
compound +  and simple +
opposite +  and alternate +
rounded +  and broadly cuneate +
8 cm80 mm <br />0.08 m <br /> (12 cm120 mm <br />0.12 m <br />) +
ovate +  and obovate +
4 cm40 mm <br />0.04 m <br /> (5 cm50 mm <br />0.05 m <br />) +
adnate +  and distinct +
crowded +, scattered +  and alternate +
Ont. +, Ill. +, Ind. +, N.Y. +  and Ohio. +
not +  and aggregated +
200–300 m +
succulent +
18 cm180 mm <br />0.18 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 />) +
dark gray-brown +  and brown +
older +, old +  and new +
Brush, borders of woods, stream banks +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
deciduous +
craspedodromous +
glandular-serrate +  and serrate +
serrate +  and crenate +
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 +
glandular +
Flowering May +  and fruiting Sep–Oct. +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
obovoid +
1.2 cm12 mm <br />0.012 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
not arillate +
persistent +
free +  and distinct +
appressed +  and erect +
triangular +
1-50-flowered +  and few-leaved +
shallow +  and moderately deep +
free +  and distinct +
branched +  and simple +
persistent +
distinct +
exsert +  and lateral +
elongate +
Crataegus ×lucorum +
Crataegus +
species +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
bright redbrown +
slender +  and moderately stout +
4 cm40 mm <br />0.04 m <br /> (5 cm50 mm <br />0.05 m <br />) +
craspedodromous +  and gland-tipped +
inconspicuous +
straight +
5 +  and 4 +
tree +  and shrub +