Crataegus colonica

Beadle

Biltmore Bot. Stud. 1: 104. 1902.

Endemic
Synonyms: Crataegus lassa var. colonica (Beadle) Lance
Treatment appears in FNA Volume 9. Treatment on page 627. Mentioned on page 620, 628.

Shrubs, 15–30 dm, branches ± weeping. Stems: trunk bark ashy gray, rough or scaly; twigs: new growth densely white-canescent, 1-year old purple-brown or blackish, older dark gray, ± stout; thorns on twigs usually numerous, straight or slightly recurved, 1-year old blackish or purple-brown, moderately stout, 2–4.5 cm. Leaves: petiole length 15% blade, winged distally, densely pubescent, glandularity not recorded; blade obovate, 1.5–2.5 (–3) cm, stiff, ± coriaceous, base gradually tapered, lobes 0, margins basally entire or subentire, distally ± denticulate, veins 2–4 (or 5) per side (except smaller leaves), apex acute and ± cuspidate to ± obtuse, abaxial surface white-tomentose at anthesis, particularly on veins, adaxial glabrescent. Inflorescences 2–4-flowered; branches tomentose; bracteoles oblong-linear, margins sessile-glandular, adaxially thin pubescent. Flowers 12–15 mm diam.; hypanthium tomentose; sepals narrowly triangular, 4 mm, margins finely glandular-serrate, abaxially ± tomentose; anthers cream or ivory; styles 3–5. Pomes green turning red or blushed red, pyriform or suborbicular, 6–9 mm diam., pubescent; sepals spreading; pyrenes 3–5.


Phenology: Flowering early to mid Apr; fruiting Aug.
Habitat: Sand hills, dry sandy woodlands, sandy roadsides
Elevation: 0–100 m

Discussion

Crataegus colonica is particularly abundant in south-central North Carolina. Very thorny species are unusual in ser. Lacrimatae, and C. colonica shares this, as well as habit, small leaves, and distribution with C. pexa. From the latter, it is distinguished by a distinctive leaf shape reminiscent of forms of C. crus-galli, relatively small, more or less pyriform fruits and shorter and less often numerous thorns. Crataegus colonica and C. pexa could represent two poles of the same species.

Selected References

None.

Lower Taxa

None.
... more about "Crataegus colonica"
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
ivory +  and cream +
James B. Phipps +
Beadle +
thin-exfoliating +  and corrugated +
compound +  and simple +
opposite +  and alternate +
tapered +
2.5 cm25 mm <br />0.025 m <br /> (3 cm30 mm <br />0.03 m <br />) +
obovate +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
semipersistent +, caducous +  and deciduous +
adnate +  and distinct +
crowded +, scattered +  and alternate +
spreading +  and pendulous +
N.C. +  and S.C. +
not +  and aggregated +
0–100 m +
1.2 cm12 mm <br />0.012 m <br /> (1.5 cm15 mm <br />0.015 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 +, blackish +, purple-brown +  and old +
older +  and new +
white-canescent +
Sand hills, dry sandy woodlands, sandy roadsides +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
deciduous +
eglandular +  and craspedodromous +
tomentose +  and pubescent +
denticulate +, subentire +  and entire +
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 early to mid Apr +  and fruiting Aug. +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
pruinose +
, +  and green turning red or blushed red +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
suborbicular +  and pyriform +
Biltmore Bot. Stud. +
not arillate +
circumscissile +
persistent +
free +  and distinct +
triangular +
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 +
woolly-tomentose +
Crataegus lassa var. colonica +
Crataegus colonica +
Crataegus (sect. Coccineae) ser. Lacrimatae +
species +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
purple-brown +, blackish +  and old +
straight +
slender +
2 cm20 mm <br />0.02 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
craspedodromous +  and gland-tipped +
inconspicuous +
scaly +  and rough +
less erect +  and oblique +
1 +  and several +
determinate +
2 +  and 4 +