Crataegus brittonii

Eggleston

Bull. Torrey Bot. Club 36: 640. 1909.

Common names: Britton hawthorn
Conservation concernEndemic
Synonyms: Crataegus uniflora var. brittonii (Eggleston) Lance
Treatment appears in FNA Volume 9. Treatment on page 606. Mentioned on page 605, 607.

Shrubs, slender, 30–40 dm. Stems: twigs: new growth pubescent, 1-year old gray-brown, ± shiny, glabrous, older gray; thorns on twigs often numerous, ± straight to slightly recurved, 1-year old blackish, ± slender, 3–5 cm. Leaves: petiole 3–6 mm, flared distally, pubescent, glandularity not recorded; blade elliptic-rhombic to broadly elliptic-rhombic, 2–3.5 cm (usually widest near middle), length/width = 1.3 or wider, base broadly cuneate, lobes 0, or 1 (or 2) per side, margins crenate-serrate, teeth caducous, gland-tipped, venation ± craspedodromous, veins 3 or 4 per side, apex rounded to subacute, abaxial surface pale green, soft-pubescent, indumentum variably persistent with age, adaxial dark green, appressed-pubescent. Inflorescences 2–6-flowered; branches densely pubescent; bracteoles type 2. Flowers 14–18 mm diam.; hypanthium densely pubescent; sepals foliaceous, at least as long as petals, adaxially pubescent; anthers ivory; styles 3–5. Pomes red or ruddy, sometimes becoming dull brown, 14 mm, pubescent; sepals reflexed; pyrenes 3–5.


Phenology: Flowering Apr–May; fruiting Sep–Nov.
Habitat: Brush
Elevation: 0–200 m

Discussion

Of conservation concern.

Crataegus brittonii is a rare species with a scattered distribution.

For a discussion of the possibly synonymous but untypified pink-anthered Crataegus rhodella Ashe and C. arenicola Ashe see J. B. Phipps and K. A. Dvorsky (2006).

Selected References

None.

Lower Taxa

None.
... more about "Crataegus brittonii"
appressed-pubescent +
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
James B. Phipps +
Eggleston +
thin-exfoliating +  and corrugated +
compound +  and simple +
opposite +  and alternate +
cuneate +
Crataegus sect. Parvifoliae +
3.5 cm35 mm <br />0.035 m <br /> (6 cm60 mm <br />0.06 m <br />) +
elliptic-rhombic +  and broadly elliptic-rhombic +
2 cm20 mm <br />0.02 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
adnate +  and distinct +
crowded +, scattered +  and alternate +
Britton hawthorn +
reduced +
Ala. +, Ga. +, N.C. +  and Tenn. +
not +  and aggregated +
0–200 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 />) +
craspedodromous +
gray +  and gray-brown +
older +, old +  and new +
glabrous +  and pubescent +
Brush +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
deciduous +
stipitate-glandular +
toothed +  and crenate +
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 +
eglandular +  and sessile-glandular +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Flowering Apr–May +  and fruiting Sep–Nov. +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
pruinose +
brown +, ruddy +  and red +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
suborbicular +
14 cm140 mm <br />0.14 m <br /> (?) +
Bull. Torrey Bot. Club +
not arillate +
persistent +
free +  and distinct +
triangular +
nonaccrescent +
1-50-flowered +  and few-leaved +
Conservation concern +  and Endemic +
free +  and distinct +
branched +  and simple +
persistent +
distinct +
exsert +  and lateral +
elongate +
Crataegus uniflora var. brittonii +
Crataegus brittonii +
Crataegus (sect. Coccineae) ser. Parvifoliae +
species +
5 cm50 mm <br />0.05 m <br /> (8 cm80 mm <br />0.08 m <br />) +
straight +
slender +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
craspedodromous +  and gland-tipped +
inconspicuous +
less erect +  and oblique +
1 +  and several +
straight +
determinate +
4 +  and 3 +