Crataegus phaenopyrum is a small tree to 12 m, stems smooth, thorns to 7 cm long, older stems brown, new growth green.
Leaves alternate, broadly triangular in outline, to 6 cm long, 5 cm wide, sharply 3-5 lobed (like small maple leaves), margin coarsely toothed, shiny dark green above, paler below, tip pointed, base truncate to slightly lobed veins extending into sinuses as well as to lobe tips, stalk 1-2 cm, no glands.
Flowers white about 1 cm wide , anthers pink, sepals short, triangular, tips pointed; Inflorescence branched, many-flowered; June.
Fruit fleshy, bright red, 0.4-0.5 cm wide, sepals usually deciduous leaving a circular scar.
Wetland status: UPL.
Frequency in NYC: Very infrequent.
Habitat: Generally in overgrown horticultural areas.