Crataegus dispar

Beadle

Biltmore Bot. Stud. 1: 28. 1901.

Endemic
Treatment appears in FNA Volume 9. Treatment on page 632. Mentioned on page 620.

Shrubs or trees, 50 dm, branches ± weeping. Stems: ultimate twigs relatively stout; twigs: new growth densely appressed-canescent, 2–3-years old dark gray or gray-brown; thorns on twigs absent or numerous, straight, 2-years old purple-brown, slender, 3–4 cm. Leaves: petiole length 20–35% blade, densely appressed-hairy young, glandular; blade ± obovate-spatulate, 2.3–3.5 cm, thin, base gradually tapered, lobes 2 per side, subterminal, sinuses shallow (LII 15–20%), lobe apex acute, margins glandular-serrate, veins 2 or 3 per side, apex acuminate, abaxial surface ± persistently pubescent, adaxial densely tomentose, ± glabrate. Inflorescences 2–4-flowered; branches densely appressed-pubescent; bracteoles deciduous, linear, margins glandular, adaxially short-pubescent. Flowers 13–16 mm diam.; hypanthium densely pubescent; sepals narrow, 3 mm, margins glandular-serrate, abaxially pubescent; anthers ivory; styles 4 or 5. Pomes bright-orange-red or reddish, orbicular, 8–12 mm diam., glabrate to slightly pubescent; sepals reflexed; pyrenes 4 or 5.


Phenology: Flowering Mar–Apr; fruiting Jul–Aug.
Habitat: Brush, sandy soil
Elevation: 30–100 m

Discussion

Crataegus dispar is a somewhat scarce species, concentrated in South Carolina and with scattered records from Alabama, Florida, and Georgia. The author notes the species in South Carolina grows in extremely dry conditions.

Crataegus dispar is one of the most easily recognized members of ser. Lacrimatae, even identifiable in specimens lacking reproductive parts and sometimes from extension shoots alone. Of note are the wide extension-shoot leaves, often deeply incised into wide-spreading, sharp segments lobed nearly to the sinuses, rather as in C. marshallii.

Selected References

None.

Lower Taxa

None.
... more about "Crataegus dispar"
glabrate +  and tomentose +
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 +
tapered +
8 cm80 mm <br />0.08 m <br /> (12 cm120 mm <br />0.12 m <br />) +
obovate-spatulate +
2.3 cm23 mm <br />0.023 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
appressed-pubescent +
adnate +  and distinct +
crowded +, scattered +  and alternate +
spreading +  and pendulous +
Ala. +, Fla. +, Ga. +  and S.C. +
not +  and aggregated +
30–100 m +
1.3 cm13 mm <br />0.013 m <br /> (1.6 cm16 mm <br />0.016 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 +, dark gray +  and old +
appressed-canescent +
Brush, sandy soil +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
deciduous +
subterminal +
eglandular +  and craspedodromous +
pubescent +  and short-pubescent +
serrate +  and crenate +
4 cm40 mm <br />0.04 m <br /> (5 cm50 mm <br />0.05 m <br />) +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
firm +  and coriaceous +
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 />) +
circular +  and elliptic +
0 (?) +  and 4 (?) +
free +  and distinct +
post-mature +
appressed-hairy +
Flowering Mar–Apr +  and fruiting Jul–Aug. +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
pruinose +
reddish +  and bright-orange-red +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
glabrate +  and slightly pubescent +
orbicular +
Biltmore Bot. Stud. +
not arillate +
circumscissile +
persistent +
free +  and distinct +
triangular +
nonaccrescent +
3 cm30 mm <br />0.03 m <br /> (?) +
1-50-flowered +  and few-leaved +
free +  and distinct +
branched +  and simple +
persistent +
distinct +
exsert +  and lateral +
elongate +
woolly-tomentose +
Crataegus dispar +
Crataegus (sect. Coccineae) ser. Lacrimatae +
species +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
purple-brown +
straight +
slender +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
craspedodromous +  and gland-tipped +
inconspicuous +
less erect +  and oblique +
1 +  and several +
determinate +
3 +  and 2 +
tree +  and shrub +