familyRosaceae
subfamilyRosaceae subfam. Amygdaloideae
genusCrataegus
sectionCrataegus sect. Macracanthae
speciesCrataegus scabrida
Crataegus scabrida var. scabrida
Synonyms: Crataegus improvisa Sargent
Leaf-blades ovate, 4–7 cm, adaxial surface variably pubescent young. Inflorescence branches glabrous. Flowers: hypanthium glabrous.
Phenology: Flowering May–Jun; fruiting Sep–Oct.
Habitat: Brush, roadsides, woodland edges
Elevation: 50–400 m
Distribution
N.B., N.S., Ont., Que., Maine, Mass., Mich., N.Y., Vt., Wis.
Discussion
Variety scabrida is widely spread through the range of Crataegus scabrida from Wisconsin to New England and Nova Scotia; it is nearly identical to C. brainerdii except for stamen number. Crataegus improvisa is a form with narrowly rhombic leaves.
Selected References
None.
Lower Taxa
None.
"thin" is not a number."glabrous" is not a number. "pubescent" 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 scabrida var. scabrida"
glabrous +
aggregated +
pubescent +
epigynous +
pink +
dehiscent +
acute +
flattened-scaly +
absent +
ovate +
coriaceous +
leafy +
absent +
symmetric +
caducous +
absent +
falcate +
membranous +
woody +
simple +
lobed +
aggregated +
absent +
absent +
hard +
aggregated +
mature +
fascicles +
deep +
determinate +
glabrous +
dull +
persistent +
glabrous +
obconic +
constricted +
2mm;6mm +
6-10-flowered +
glabrous +
axillary +
crassinucellate +
compound +
alternate +
deciduous +
horizontal +
prominent +
craspedodromous +
absent +
dominant +
sessile-glandular +
serrate +
free +
earlier +
absent +
aggregated +
superposed +
monopodial +
corymbose +
domed +
absent +
epigynous +
pale paper brown +
post-mature +
absent +
slender +
1;250 +
exposed +
thin +
pruinose +
suborbicular +
Rhodora +
1901 +
grooved +
not arillate +
2;1 +
persistent +
spreading +
triangular +
annual +
absent +
woody +
excavated +
eroded +
absent +
pitted +
plane +
shallow +
Endemic +
usually shorter +
8;7 +
spreading +
outer +
capitate +
pinnate +
deciduous +
free +
absent +
persistent +
distinct +
terminal +
4;3 +
elongate +
Crataegus scabrida var. scabrida +
Crataegus scabrida +
variety +
compound +
stout +
recurved +
pinnate +
young +
developed +
absent +
inconspicuous +
minute +
absent +
thorny +
determinate +
old +
shiny +
unarmed +
perennial +
incised +
narrower +