familyRosaceae
subfamilyRosaceae subfam. Amygdaloideae
genusCrataegus
sectionCrataegus sect. Coccineae
speciesCrataegus pruinosa
Crataegus pruinosa var. parvula
Canad. J. Bot. 58: 1684. 1980.
Endemic
Basionym: Crataegus parvula Sargent Crataegus S. Michigan, 527. 1907
Shrubs, 20–30 dm, usually branched to base. Leaves: blade broadly rhombic, 2–4 cm widest in middle, length/width = 1.5, lobes 2–4 per side, sinuses shallow, lobe apex acute, base broadly cuneate, adaxial surface glabrous, sometimes sparsely appressed-hairy along veins. Inflorescence branches glabrous. Flowers 15–22 mm diam.; stamens 20, anthers pale-pink.
Phenology: Flowering May; fruiting Sep–Oct.
Habitat: Brush, successional fields, unmanaged pastures
Elevation: 20–300 m
Distribution
Ont., Mass., Mich., N.Y., N.C., Va.
Discussion
Variety parvula is scattered through the northern range of the species and at higher elevations south into the Appalachians; it is characterized by smaller leaves that usually are very shallowly incised.
Selected References
None.
Lower Taxa
None.
... more about "Crataegus pruinosa var. parvula"
aggregated +
epigynous +
pale-pink +
dehiscent +
flattened-scaly +
orangebrown +
exposed +
stipuliform +
cuneate +
1.6-2 +
mid +
rhombic +
? (?) +
widest +
leafy +
absent +
symmetric +
caducous +
absent +
falcate +
spreading +
woody +
simple +
lobed +
prominent +
aggregated +
absent +
absent +
hard +
aggregated +
mature +
fascicles +
determinate +
glabrous +
dull +
persistent +
glabrous +
constricted +
5-10-flowered +
glabrous +
axillary +
crassinucellate +
compound +
alternate +
deciduous +
horizontal +
prominent +
absent +
? (?) +
dominant +
free +
earlier +
subentire +
absent +
aggregated +
superposed +
monopodial +
corymbose +
convex +
absent +
epigynous +
post-mature +
eglandular +
glandular +
absent +
1;250 +
exposed +
thin +
angular +
pruinose +
not punctate +
glabrous +
suborbicular +
Canad. J. Bot. +
1980 +
grooved +
angular +
plane +
not arillate +
2;1 +
persistent +
spreading +
1/2 +
triangular +
nonaccrescent +
annual +
absent +
woody +
excavated +
eroded +
absent +
pitted +
plane +
deeper +
shallow +
shallow +
matte +
Endemic +
usually shorter +
spreading +
capitate +
pinnate +
deciduous +
free +
absent +
persistent +
distinct +
adnate +
terminal +
elongate +
young +
adaxial +
glabrous +
Crataegus pruinosa var. parvula +
Crataegus pruinosa +
variety +
compound +
straight +
recurved +
shiny +
slender +
fine +
pinnate +
young +
developed +
absent +
inconspicuous +
minute +
flattened-scaly +
absent +
thorny +
straight +
determinate +
numerous +
branched +
dense +
perennial +
suberect +
incised +
narrower +