Crataegus (sect. Crataegus) ser. Microcarpae

Man. Cult. Trees ed. 2, 367. 1940.

Endemic
Basionym: Crataegus sect. Microcarpae Loudon Arbor. Frutic. Brit. 2: 825. 1838
Treatment appears in FNA Volume 9. Treatment on page 499. Mentioned on page 495, 496, 525, 529.

Shrubs or trees, 30–70 dm. Stems: trunk bark cream to cinnamon brown or light gray-brown in patches, in shade darker patches pale tan or olive green, exfoliating with smooth, thin flakes; compound thorns on trunks sometimes present; thorns on twigs determinate. Leaves long-persistent: petiole length 5–30% blade; blade narrowly or broadly spatulate, narrow, 1.5–3 cm, coriaceous, lobes 0 or 1 per side, sinuses ± shallow to deep, venation craspedodromous, veins to lobes and deeper sinuses; blades on extension shoots usually more diverse in shape, larger, more deeply incised. Inflorescences 20–30-flowered; branches glabrous; bracteoles ± caducous, linear, small, membranous to herbaceous, margins usually eglandular, sometimes ± stipuliform. Flowers 10 mm diam.; sepals triangular; stamens 20, anthers pale-yellow; styles 3–5. Pomes bright-orange-red, orbicular, 3–5 mm diam., matte to glossy; sepal remnants persistent; pyrenes 3–5, dorsally obscurely grooved, sides plane apical quarters exposed.

Distribution

sc, se United States

Discussion

Species 1.

Selected References

None.

0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
pale-yellow +
James B. Phipps +
Linnaeus +
exfoliating +
compound +  and simple +
opposite +  and alternate +
Crataegus sect. Microcarpae +
8 cm80 mm <br />0.08 m <br /> (12 cm120 mm <br />0.12 m <br />) +
incised +  and spatulate +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
adnate +  and distinct +
crowded +, scattered +  and alternate +
sc +  and se United States +
not +  and aggregated +
10 cm100 mm <br />0.1 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 />) +
tomentose +  and glabrous +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
long-persistent +
entire +  and serrate +
stipuliform +
inferior +  and superior +
biseriate +  and clustered +
collateral +  and basal +
olive green +, pale tan +  and shade darker +
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 +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
bright-orange-red +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
matte +  and glossy +
orbicular +
Man. Cult. Trees ed. +
not arillate +
persistent +
free +  and distinct +
appressed +  and erect +
triangular +
1-50-flowered +  and few-leaved +
craspedodromous +
less shallow +  and deep +
free +  and distinct +
branched +  and simple +
persistent +
distinct +
exsert +  and lateral +
elongate +
glabrous +  and tomentose +
Crataegus (sect. Crataegus) ser. Microcarpae +
Crataegus sect. Crataegus +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
curved +  and straight +
slender +
1 cm10 mm <br />0.01 m <br /> (6 cm60 mm <br />0.06 m <br />) +
craspedodromous +  and gland-tipped +
inconspicuous +
exfoliating +
1 +  and few +
determinate +
2 +  and 8 +
tree +  and shrub +