Crataegus egens

Beadle

Biltmore Bot. Stud. 1: 85. 1902.

EndemicIllustrated
Synonyms: Crataegus quaesita var. egens (Beadle) Lance
Treatment appears in FNA Volume 9. Treatment on page 622. Mentioned on page 613, 619, 621, 625, 626.

Shrubs or trees, to 50 dm, branches strongly weeping (moving in slight wind). Stems: plants seldom flowering at less than 1 m; twigs: new growth white-canescent, 1-year old purple-brown, older darker or grayer, slender; thorns on twigs sometimes absent, straight or slightly recurved, 1–2-years old blackish to deep gray, fine, 1–2 cm. Leaves: petiole very slender, length 25–50% blade, winged distally, pubescent, glandular; blade short obtrullate to broadly obovate, 1–2 (–3) cm (widest in distal 1/2, length-width mostly less than 1.4:1), thin, base cuneate to slightly rounded, lobes 1 or 2 per side distally, short, lobe apex usually subacute, margins obscurely crenate, sometimes crenate-serrate in distal 1/2, teeth glandular, veins 1 or 2 per side (exiting at or beyond at widest part), apex subacute, not glossy, surfaces sparsely hairy young, abaxial surface soon glabrate except on veins. Inflorescences 1-flowered or 2-flowered; branches densely appressed white-pubescent; bracteoles few, linear, margins sessile-glandular, adaxially thin short-pubescent. Flowers 12–16 mm diam.; hypanthium white-tomentose; sepals triangular, 2–3 mm, margins glandular, abaxially pubescent; anthers ivory; styles 3. Pomes deep, dull yellow, sometimes with red cheek, suborbicular, 8–10 mm diam., glabrous; sepals appressed, sometimes late circumscissile; pyrenes 3.


Phenology: Flowering late Feb–early Apr; fruiting Jul–Aug.
Habitat: Pine barrens, brush, usually on sandy soil
Elevation: 10–100 m

Discussion

Crataegus egens is locally common in north-central Florida and Georgia with outliers occurring in Clark and Henry counties, Alabama, and Jasper County, South Carolina.

The long-petiolate leaves of Crataegus egens are very small and short-obtrullate to broadly obovate, thus proportionally wide. There is some variation in leaf lobing from acute to obtuse and even obscure. An additional characteristic of this species is the way in which extension-shoot leaves may flare outward toward the apex, their obtuse and large terminal end being quite deeply and somewhat irregularly lobed. Specimens with more elongated (1.4–1.6:1) leaves but more or less typically shaped distal ends may be referred to C. cirrata Beadle and are somewhat intermediate with C. floridana. Similar forms with leaves obovate-cuneate, lobes virtually absent, very obtuse and strongly crenate terminally but of uncertain taxonomic status, may key here. Uncommon short specimens of C. egens may be distinguished from C. lepida by leaves of that species being coriaceous and shiny with lobes almost or entirely absent.

Selected References

None.

Lower Taxa

None.
... more about "Crataegus egens"
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 slightly rounded +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
obtrullate +  and broadly obovate +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
semipersistent +, caducous +  and deciduous +
white-pubescent +
adnate +  and distinct +
crowded +, scattered +  and alternate +
spreading +  and pendulous +
Ala. +, Fla. +, Ga. +  and S.C. +
not +  and aggregated +
10–100 m +
1.2 cm12 mm <br />0.012 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 />) +
grayer +, darker +  and purple-brown +
older +, old +  and new +
white-canescent +
slender +
Pine barrens, brush, usually on sandy soil +
white-tomentose +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
2-flowered +  and 1-flowered +
crassinucellate +
deciduous +
eglandular +  and craspedodromous +
glandular +  and sessile-glandular +
pubescent +  and short-pubescent +
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 +
Flowering late Feb–early Apr +  and fruiting Jul–Aug. +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
pruinose +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
suborbicular +
Biltmore Bot. Stud. +
not arillate +
circumscissile +
persistent +
free +  and distinct +
triangular +
nonaccrescent +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
1-50-flowered +  and few-leaved +
Endemic +  and Illustrated +
free +  and distinct +
branched +  and simple +
persistent +
distinct +
exsert +  and lateral +
elongate +
Crataegus quaesita var. egens +
Crataegus egens +
Crataegus (sect. Coccineae) ser. Lacrimatae +
species +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
blackish +  and deep gray +
straight +
slender +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
craspedodromous +  and gland-tipped +
inconspicuous +
less erect +  and oblique +
1 +  and several +
determinate +
sparse +  and numerous +
2 +  and 1 +
plant +, tree +  and shrub +