Crataegus collina var. hirtiflora

(Sargent) J. B. Phipps

Novon 16: 385. 2006.

Endemic
Basionym: Crataegus hirtiflora Sargent Crataegus Missouri, 82. 1908 (as hertiflora)
Synonyms: C. macropoda Sargent
Treatment appears in FNA Volume 9. Treatment on page 544. Mentioned on page 543, 545.

Leaf-blades broadly elliptic, 3–5 cm, 2/3 to nearly full grown at anthesis, length/width = 1.3, thin to chartaceous, lobes 0 or 1 per side, obscure, max LII 10%, lobe apex usually obtuse, margins serrate, teeth 0.5 mm, apex usually subacute, adaxial surface matte, short-pubescent young. Inflorescence branches short-pubescent. Flowers 15–18 mm diam.; stamens 15–20, anthers white or cream.


Phenology: Flowering Apr; fruiting Sep–Oct.
Habitat: Pastures, fencerows, scrub, open woodlands
Elevation: 10–200 m

Discussion

Variety hirtiflora is common west of the Mississippi River.

Selected References

None.

Lower Taxa

None.
68 +, 51 +  and 34 +
scabrous-pubescent +
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
cream +  and white +
James B. Phipps +
(Sargent) J. B. Phipps +
orangebrown +
thin-exfoliating +  and corrugated +
compound +  and simple +
opposite +  and alternate +
tapering +
Crataegus hirtiflora +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
5 cm50 mm <br />0.05 m <br /> (7.5 cm75 mm <br />0.075 m <br />) +
rhombic-elliptic +, obtrullate +, obovate +, elliptic +  and rhombic-obovate +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
appressed-pubescent +
adnate +  and distinct +
crowded +, scattered +  and alternate +
Ark. +, La. +  and Mo. +
not +  and aggregated +
10–200 m +
1.5 cm15 mm <br />0.015 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 />) +
gray +  and grayish brown +
older +, old +  and new +
Pastures, fencerows, scrub, open woodlands +
pubescent +  and glabrous +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
deciduous +
short-stipitate-glandular +
serrate +  and crenate +
inferior +  and superior +
biseriate +  and clustered +
collateral +  and basal +
eglandular +  and unwinged +
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 +
pubescent +
1 cm10 mm <br />0.01 m <br /> (?) +
Flowering Apr +  and fruiting Sep–Oct. +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
pruinose +
ruddy +  and deep red +
0.8 cm8 mm <br />0.008 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
orbicular +
not arillate +
persistent +
free +  and distinct +
patent-reflexed +
triangular +
1-50-flowered +  and few-leaved +
free +  and distinct +
branched +  and simple +
persistent +
distinct +
exsert +  and lateral +
elongate +
glabrous +  and tomentose +
C. macropoda +
Crataegus collina var. hirtiflora +
Crataegus collina +
variety +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
straight +
slender +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
craspedodromous +  and gland-tipped +
0.5 cm5 mm <br />0.005 m <br /> (?) +
inconspicuous +
less erect +  and oblique +
1 +  and several +
determinate +
few +  and numerous +
not +  and pubescent +
5 +  and 7 +