Crataegus pruinosa var. parvula
Canad. J. Bot. 58: 1684. 1980.
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
Ont., Mass., Mich., N.Y., N.C., Va.
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.