familyRosaceae
subfamilyRosaceae subfam. Amygdaloideae
genusCrataegus
sectionCrataegus sect. Coccineae
speciesCrataegus margarettae
Crataegus margarettae var. angustifolia
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
Distribution
Ont., Ind., Mich.
Discussion
Of conservation concern.
Variety angustifolia is very sporadic in its occurrence but has a rather limited range.
Selected References
None.
Lower Taxa
None.
"thin" is not a number."entire" is not a number."glabrous" is not a number."adnate" is not a number."dm" is not declared as a valid unit of measurement for this property.
... more about "Crataegus margarettae var. angustifolia"
glabrous +
aggregated +
epigynous +
ivory +
dehiscent +
acute +
flattened-scaly +
orangebrown +
exposed +
stipuliform +
cuneate +
1.6-2 +
mid +
chartaceous +
matte +
subcoriaceous +
leafy +
absent +
symmetric +
caducous +
subherbaceous +
absent +
numerous +
falcate +
membranous +
spreading +
woody +
simple +
lobed +
aggregated +
absent +
absent +
hard +
aggregated +
mature +
caducous +
small +
fascicles +
determinate +
glabrous +
persistent +
glabrous +
obconic +
constricted +
2mm;6mm +
6-15-flowered +
axillary +
crassinucellate +
stipitate-glandular +
compound +
alternate +
deciduous +
horizontal +
prominent +
absent +
obscure +
dominant +
free +
earlier +
glabrous +
absent +
aggregated +
superposed +
monopodial +
corymbose +
convex +
absent +
epigynous +
pale paper brown +
post-mature +
eglandular +
sessile-glandular +
absent +
1;250 +
longitudinal +
exposed +
thin +
pruinose +
glabrous +
bright +
in C. C. Deam, Fl. Indiana, +
1940 +
grooved +
plane +
nonaccrescent +
not arillate +
2;1 +
sessile +
persistent +
reflexed +
1/2;2/3 +
triangular +
annual +
absent +
woody +
grooved +
eroded +
absent +
pitted +
shallow +
matte +
usually shorter +
spreading +
outer +
capitate +
pinnate +
deciduous +
free +
absent +
persistent +
distinct +
terminal +
3;2 +
elongate +
Crataegus margarettae var. angustifolia +
Crataegus margarettae +
variety +
compound +
blackish +
straight +
recurved +
shiny +
slender +
pinnate +
young +
developed +
absent +
inconspicuous +
minute +
fibrous +
absent +
thorny +
straight +
determinate +
serrate +
unarmed +
multistemmed +
perennial +
incised +
narrower +