Crataegus aemula

Beadle

Biltmore Bot. Stud. 1: 53. 1902.

Endemic
Treatment appears in FNA Volume 9. Treatment on page 569. Mentioned on page 568, 617.

Shrubs or trees, 30–50 dm. Stems: trunks short, slender, 5–7 cm diam., bark smooth to slightly fissured or scaly; compound thorns on trunks sometimes present; twigs: new growth reddish green, pubescent, 1-year old pale tan, becoming gray-brown; thorns on twigs ± straight, chestnut-brown, gray later, ± slender, 3–5 cm. Leaves: petiole 0.5–1.5 cm, pubescent at least young, stipitate-glandular; blade elliptic-ovate or broadly elliptic to suborbicular, 3–5 cm length/width = to 1.5, ± thin, base rounded or broadly truncate, lobes 3 or 4 per side, sinuses shallow, lobe apex acute, margins serrate, teeth regular, veins 4 or 5 per side, apex acute, abaxial surface glabrous, veins sparsely hairy, adaxial sparsely pubescent young, glabrescent. Inflorescences 5–10-flowered; branches coarsely hairy; bracteole margins densely glandular. Flowers 14–18 mm diam.; hypanthium sparsely pubescent; sepals lanceolate, 4 mm, margins glandular-serrate, abaxial pubescence not recorded; stamens 10, anthers pink-purple; styles 3–5. Pomes bright red, suborbicular, 10–13 mm diam., shiny; sepals spreading-reflexed or often erose; pyrenes 3–5, dorsally shallowly grooved. 2n = 51, 68.


Phenology: Flowering Apr; fruiting Sep–Oct.
Habitat: Oak flatwoods, brush
Elevation: 50–600 m

Discussion

Crataegus aemula grows from northwestern Georgia to central Mississippi; it is locally common. The species has escaped notice in floras since Beadle in Small (1903). It is distinguished from sympatric species of the series by twig color, new growth and inflorescence indumentum, leaf shape, stipitate-glandular petioles, and bright red pomes. Remarkably, it seems most similar to C. frugiferens, provisionally placed in ser. Apricae, with which it shares stipitate-glandular petioles but differs in larger (3.5–5 cm) leaves of a proportionately narrower (somewhat narrowly ovate to broadly elliptic) shape with cuneate bases and larger marginal teeth, and 2 or 3 distinct lobes per side. Crataegus frugiferens also has a similar distribution.

Selected References

None.

Lower Taxa

None.
... more about "Crataegus aemula"
glabrescent +  and pubescent +
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
yellow +, rose +  and purple +
James B. Phipps +
Beadle +
orangebrown +
smooth +  and slightly fissured +
compound +  and simple +
opposite +  and alternate +
truncate +  and rounded +
7 cm70 mm <br />0.07 m <br /> (8 cm80 mm <br />0.08 m <br />) +
3cm +  and 5cm +
broadly elliptic +  and suborbicular +
2 cm20 mm <br />0.02 m <br /> (7 cm70 mm <br />0.07 m <br />) +
? (?) +  and ? (?) +
adnate +  and distinct +
crowded +, scattered +  and alternate +
Ala. +, Ga. +  and Miss. +
not +  and aggregated +
50–600 m +
1.4 cm14 mm <br />0.014 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-brown +, pale tan +  and reddish green +
old +  and new +
Oak flatwoods, brush +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
deciduous +
glandular-serrate +  and serrate +
short-stipitate-glandular +
subentire or +  and shallowly moderately glandular-serrate +
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 +
sessile-glandular +  and glandular +
stipitate-glandular +  and pubescent +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Flowering Apr +  and fruiting Sep–Oct. +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
pruinose +
bright red +
1 cm10 mm <br />0.01 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
suborbicular +
Biltmore Bot. Stud. +
not arillate +
persistent +
free +  and distinct +
spreading-reflexed +
lanceolate +
nonaccrescent +
4 cm40 mm <br />0.04 m <br /> (?) +
1-50-flowered +  and few-leaved +
free +  and distinct +
branched +  and simple +
persistent +
distinct +
exsert +  and lateral +
elongate +
glabrous +  and tomentose +
Crataegus aemula +
Crataegus (sect. Coccineae) ser. Populneae +
species +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
gray +  and chestnut-brown +
straight +
slender +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
inconspicuous +
5cm +  and 7cm +
less erect +  and oblique +
1 +  and several +
slender +
straight +
determinate +
5 +  and 4 +
tree +  and shrub +