Crataegus stonei

Sargent

Rhodora 5: 62. 1903.

Common names: Stone’s hawthorn
Conservation concernEndemic
Synonyms: Crataegus biltmoreana var. stonei (Sargent) Kruschke
Treatment appears in FNA Volume 9. Treatment on page 591. Mentioned on page 586.

Shrubs, 10–20 dm. Stems: twigs: new growth reddish green, glabrous or villous, 1-year old dull reddish-brown, eventually gray; thorns on twigs ± straight, 2-years old blackish, ultimately gray, ± slender, 4–6 cm. Leaves: petiole length 30–40% blade, winged distally, villous, glandular; blade narrowly ovate, 7–8 cm, base cuneate, lobes 0 or 1–3 per side, sinuses shallow, lobe apex acute, margins serrate, teeth gland-tipped, veins 4 or 5 per side, apex acuminate, abaxial surface sparsely villous along veins, adaxial sparsely villous. Inflorescences 4–6-flowered; branches villous; bracteoles not seen. Flowers 18–20 mm diam.; hypanthium densely pubescent; sepal length not recorded, margins coarsely glandular-serrate, acuminate, abaxially pubescent; stamens 5–10, anthers pink; styles 3 or 4. Pomes dull yellow to russet, broadly ellipsoid, 12–14 mm diam., hairy; sepals on collar, ± reflexed; pyrenes 3 or 4.


Phenology: Flowering late May–early Jun; fruiting Sep–Oct.
Habitat: Woods, openings
Elevation: 20–300 m

Discussion

Of conservation concern.

Crataegus stonei is another species related to C. biltmoreana, from which it differs mainly in its pink anthers, proportionately narrower and more elongate leaves, and lower stature.

Selected References

None.

Lower Taxa

None.
... more about "Crataegus stonei"
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
James B. Phipps +
Sargent +
orangebrown +
thin-exfoliating +  and corrugated +
compound +  and simple +
opposite +  and alternate +
cuneate +
Intricatae +
6 cm60 mm <br />0.06 m <br /> (9 cm90 mm <br />0.09 m <br />) +
7 cm70 mm <br />0.07 m <br /> (8 cm80 mm <br />0.08 m <br />) +
adnate +  and distinct +
crowded +, scattered +  and alternate +
Stone’s hawthorn +
Mass. +, N.Y. +  and Pa. +
not +  and aggregated +
20–300 m +
less hard +  and mealy +
1.8 cm18 mm <br />0.018 m <br /> (2 cm20 mm <br />0.02 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 +, reddish-brown +  and reddish green +
old +  and new +
villous +  and glabrous +
Woods, openings +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
deciduous +
craspedodromous +
glandular-serrate +
acuminate +
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 +
Flowering late May–early Jun +  and fruiting Sep–Oct. +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
pruinose +
yellow +  and russet +
1.2 cm12 mm <br />0.012 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
ellipsoid +
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 +
pubescent +  and glabrous +
Crataegus biltmoreana var. stonei +
Crataegus stonei +
Crataegus (sect. Coccineae) ser. Intricatae +
species +
4 cm40 mm <br />0.04 m <br /> (6 cm60 mm <br />0.06 m <br />) +
gray +  and blackish +
straight +
slender +
4 cm40 mm <br />0.04 m <br /> (6 cm60 mm <br />0.06 m <br />) +
gland-tipped +
inconspicuous +
buff to gray-brown +  and corrugated +
less erect +  and oblique +
1 +  and several +
straight +
determinate +
5 +  and 4 +