Crataegus schizophylla

Eggleston

Bull. Torrey Bot. Club 38: 243. 1911.

Conservation concernEndemic
Treatment appears in FNA Volume 9. Treatment on page 539. Mentioned on page 536, 537.

Shrubs, 20–40 dm. Stems: twigs: new growth flexuous, glabrous, 1-years old tan, older gray; thorns on twigs ± straight, 1-year old shiny black, 3–5 cm. Leaves: petiole 3–7 mm, length 12–15% blade, glabrous, eglandular; blade yellow-green, shiny, elliptic to narrowly ovate, 2.5–5 cm, coriaceous, base cuneate, lobes 0 or 1–3 per side, margins serrulate, venation craspedodromous, veins 4–6 per side, apex acute to obtuse, surfaces glabrous. Inflorescences 5–20-flowered; branches sparsely hairy; bracteoles not seen. Flowers 12–15 mm diam.; hypanthium glabrous; sepals 3–4 mm, margins ± entire, adaxially glabrous; stamens 10, anthers pink; styles 1–3. Pomes bright red, ± oblong-obovoid, 7–9 mm diam., glabrous; sepals patent-reflexed; pyrenes 1–3.


Phenology: Flowering May–Jun; fruiting Oct.
Habitat: Thickets and banks on sandy soil
Elevation: 10–20 m

Discussion

Of conservation concern.

Crataegus schizophylla is known from Martha’s Vineyard, Duke County. The extension-shoot leaves are larger, relatively wider, with acute lobes. Except for its distinctive leaf form, unique in this series, it closely resembles C. crus-galli.

Selected References

None.

Lower Taxa

None.
... more about "Crataegus schizophylla"
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. Crus-galli +
8 cm80 mm <br />0.08 m <br /> (12 cm120 mm <br />0.12 m <br />) +
yellow-green +
elliptic +  and narrowly ovate +
2.5 cm25 mm <br />0.025 m <br /> (5 cm50 mm <br />0.05 m <br />) +
glandular-punctate +
adnate +  and distinct +
crowded +, scattered +  and alternate +
not +  and aggregated +
10–20 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 />) +
gray +  and tan +
older +, old +  and new +
Thickets and banks on sandy soil +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
deciduous +
craspedodromous +
entire +  and serrulate +
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 +
glabrescent +  and villous +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Flowering May–Jun +  and fruiting Oct. +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
pruinose +
bright red +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
oblong-obovoid +
Bull. Torrey Bot. Club +
not arillate +
persistent +
free +  and distinct +
patent-reflexed +
triangular +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 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 schizophylla +
Crataegus (sect. Coccineae) ser. Crus-galli +
species +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
straight +
reflexed +  and recurved +
medium +  and stout +
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 6 +