Crataegus craytonii

Beadle

Biltmore Bot. Stud. 1: 121. 1902.

Common names: Crayton hawthorn
Conservation concernEndemic
Treatment appears in FNA Volume 9. Treatment on page 592. Mentioned on page 586.

Shrubs, 20–30 dm. Stems: twigs: new growth reddish green, densely hairy, 1–2-years old dark gray-brown, older gray; thorns on twigs ± straight, 2-years old blackish, very slender, 2–3 cm. Leaves: petiole 1–2 mm wide, length 25–40% blade, winged distally, pubescent, glandular; blade ovate to broadly elliptic, 4–8 cm, base cuneate to truncate (suddenly narrowed to petiole), lobes 3 or 4 per side often obscure, sinuses sometimes quite deep, lobe apex acute, margins strongly serrate, teeth gland-tipped, veins 5 per side, apex acute, surfaces rough-hairy. Inflorescences 3–7-flowered; branches pubescent; bracteole margins stipitate-glandular. Pedicels pubescent. Flowers 20 mm diam.; hypanthium densely pubescent; sepals 7 mm, margins glandular-pectinate to glandular-serrate, abaxially pubescent; stamens 20, anthers pale-yellow or cream; styles 3–5. Pomes red to ruddy, broadly ellipsoid, 7–10 mm diam., pubescent; sepals on collar, ± reflexed; pyrenes 3–5.


Phenology: Flowering Apr; fruiting Sep–Oct.
Habitat: Wooded areas
Elevation: 100–300 m

Discussion

Of conservation concern.

Crataegus craytonii is a rare shrub from a few scattered localities. The species resembles C. biltmoreana in its hairiness but has usually larger, differently shaped leaves, 20 stamens, and red to ruddy pomes.

Selected References

None.

Lower Taxa

None.
... more about "Crataegus craytonii"
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
cream +  and pale-yellow +
James B. Phipps +
Beadle +
orangebrown +
thin-exfoliating +  and corrugated +
compound +  and simple +
opposite +  and alternate +
cuneate +  and truncate +
Intricatae +
6 cm60 mm <br />0.06 m <br /> (9 cm90 mm <br />0.09 m <br />) +
ovate +  and broadly elliptic +
4 cm40 mm <br />0.04 m <br /> (8 cm80 mm <br />0.08 m <br />) +
stipitate-glandular +
adnate +  and distinct +
crowded +, scattered +  and alternate +
Crayton hawthorn +
Ala. +, Ga. +, N.C. +  and Va. +
not +  and aggregated +
100–300 m +
less hard +  and mealy +
20 cm200 mm <br />0.2 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 +, dark gray-brown +  and reddish green +
older +, old +  and new +
Wooded areas +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
deciduous +
craspedodromous +
glandular-pectinate +  and glandular-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 +  and sessile +
1mm +  and 2mm +
Flowering Apr +  and fruiting Sep–Oct. +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
pruinose +
red +  and ruddy +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
ellipsoid +
Biltmore Bot. Stud. +
not arillate +
persistent +
free +  and distinct +
triangular +
nonaccrescent +
7 cm70 mm <br />0.07 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 sect. Flavae +  and Crataegus ser. +
Crataegus craytonii +
Crataegus (sect. Coccineae) ser. Intricatae +
species +
4 cm40 mm <br />0.04 m <br /> (6 cm60 mm <br />0.06 m <br />) +
straight +
slender +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
gland-tipped +
inconspicuous +
buff to gray-brown +  and corrugated +
less erect +  and oblique +
1 +  and several +
straight +
determinate +