Crataegus eximia

Beadle

Biltmore Bot. Stud. 1: 62. 1902.

Conservation concernEndemic
Treatment appears in FNA Volume 9. Treatment on page 585. Mentioned on page 581.

Shrubs or trees, 30–40 dm. Stems: twigs: new growth reddish green, 1-year old reddish-brown, older gray; thorns on twigs slightly curved, 2-years old blackish gray, usually fine, 3–4 cm. Leaves: petiole length 25–40% blade, densely stipitate-glandular (at least young); blade ovate-rhombic to ovate-trullate, 4.5–6.5 cm (flowering) to 8 cm (mature), base cuneate to broadly cuneate, lobes 3 or 4 (or 5) per side, sinuses deep, lobe apex subacute to acute, angled, margins finely serrate, veins 5 or 6 per side, apex acute, adaxial midvein scabrous young. Inflorescences 4–6-flowered; branches glabrous; bracteoles caducous, very narrowly obovate, ± membranous, margins glandular. Flowers 22–25 mm diam.; sepals narrowly triangular, 4–5 mm, margins finely glandular-serrate; anthers cream; styles 3 or 4. Pomes red, orbicular, 8–12 mm diam.; sepals spreading; pyrenes 3–5.


Phenology: Flowering late May; fruiting Sep–Oct.
Habitat: Rocky woods and glades
Elevation: 200 m

Discussion

Of conservation concern.

Known only from the flowering type specimen and the protologue by Beadle, Crataegus eximia seems one of the most distinct entities in the series on the basis of its large rhomboid-ovate leave with deep sinuses and angled lobes, large flowers, late flowering date (23 May in 1901).

Selected References

None.

Lower Taxa

None.
... more about "Crataegus eximia"
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
James B. Phipps +
Beadle +
thin-exfoliating +  and corrugated +
compound +  and simple +
opposite +  and alternate +
cuneate +  and broadly cuneate +
Pulcherrimae +
7 cm70 mm <br />0.07 m <br /> (8 cm80 mm <br />0.08 m <br />) +
ovate-rhombic +  and ovate-trullate +
8 cm80 mm <br />0.08 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
adnate +  and distinct +
crowded +, scattered +  and alternate +
not +  and aggregated +
less hard +  and mealy +
2.2 cm22 mm <br />0.022 m <br /> (2.5 cm25 mm <br />0.025 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 green +
older +, old +  and new +
Rocky woods and glades +
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 +
stipitate-glandular +
crenate to 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 +
stipitate-glandular +
stipitate-glandular +
Flowering late May +  and fruiting Sep–Oct. +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
pruinose +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
orbicular +
Biltmore Bot. Stud. +
not arillate +
persistent +
free +  and distinct +
triangular +
nonaccrescent +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
1-50-flowered +  and few-leaved +
Conservation concern +  and Endemic +
free +  and distinct +
branched +  and simple +
persistent +
distinct +
exsert +  and lateral +
elongate +
Crataegus eximia +
Crataegus (sect. Coccineae) ser. Pulcherrimae +
species +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
blackish gray +
straight +
slender +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
craspedodromous +  and gland-tipped +
inconspicuous +
corrugated +  and rough +
less erect +  and oblique +
1 +  and several +
determinate +
few +  and numerous +
6 +  and 5 +
tree +  and shrub +