Crataegus margarettae var. angustifolia

E. J. Palmer in C. C. Deam

in C. C. Deam, Fl. Indiana, 543. 1940.

Conservation concernEndemic
Treatment appears in FNA Volume 9. Treatment on page 602.

Leaves: blade lance-elliptic or oblong-lanceolate, 3–5 cm, base cuneate, lobes 0 or obscure, sinuses shallow, apex acute. Flowers 12–17 mm diam. Pomes broadly ellipsoid to suborbicular.


Phenology: Flowering May; fruiting Sep–Oct.
Habitat: Hedgerows, thickets, wood margins, dry areas
Elevation: 100–300 m

Discussion

Of conservation concern.

Variety angustifolia is very sporadic in its occurrence but has a rather limited range.

Selected References

None.

Lower Taxa

None.
glabrescent +  and appressed-short-pubescent +
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
glabrous +  and pubescent +
James B. Phipps +
E. J. Palmer in C. C. Deam +
orangebrown +
thin-exfoliating +  and corrugated +
compound +  and simple +
opposite +  and alternate +
cuneate +
Crataegus sect. Rotundifoliae +
lance-elliptic +  and elliptic +
6 cm60 mm <br />0.06 m <br /> (9.5 cm95 mm <br />0.095 m <br />) +
green +  and bluish green +
oblong-lanceolate +  and lance-elliptic +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
elliptic +  and linear +
pubescent +  and glabrous +
adnate +  and distinct +
crowded +, scattered +  and alternate +
Ont. +, Ind. +  and Mich. +
not +  and aggregated +
100–300 m +
1.2 cm12 mm <br />0.012 m <br /> (1.7 cm17 mm <br />0.017 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 +, brownish gray +  and brownish tan +
older +, old +  and new +
dull +  and shiny +
Hedgerows, thickets, wood margins, dry areas +
constricted +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
stipitate-glandular +
deciduous +
glandular-serrate +  and serrate +
subentire +, entire +  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 +
pubescent +  and glabrous +
Flowering May +  and fruiting Sep–Oct. +
adnate +, free +, connate +  and distinct +
dark gray-brown +  and russet +
exfoliating +  and corrugated +
pruinose +
burgundy +, dull +, red +, orange-red +  and yellow +
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
broadly ellipsoid +  and suborbicular +
in C. C. Deam, Fl. Indiana, +
nonaccrescent +
not arillate +
persistent +
free +  and distinct +
triangular +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
1-50-flowered +  and few-leaved +
concave +  and plane +
Conservation concern +  and Endemic +
free +  and distinct +
branched +  and simple +
persistent +
distinct +
exsert +  and lateral +
elongate +
glabrous +  and tomentose +
Crataegus margarettae var. angustifolia +
Crataegus margarettae +
variety +
5 cm50 mm <br />0.05 m <br /> (7 cm70 mm <br />0.07 m <br />) +
straight +
slender +
2.5 cm25 mm <br />0.025 m <br /> (5 cm50 mm <br />0.05 m <br />) +
craspedodromous +  and gland-tipped +
inconspicuous +
less erect +  and oblique +
1 +  and several +
straight +
determinate +
few +  and numerous +
4 +  and 3 +