Crataegus collina

From Flora of Indiana (1940) by Charles C. Deam

Leaves narrowly obovate or oblong-obovate, 2-6 cm long, 1.5-3 cm wide, rounded or pointed at the apex, attenuate at the base, serrate on the upper two thirds of the blades, or sometimes nearly to the base, thin but firm, with veins slightly impressed above, dull green, scabrous above and villous beneath when young, at maturity glabrous above and slightly villous on the veins beneath; flowers 14-17 mm in diameter, in compound, many flowered, villous corymbs; stamens 15-20; anthers pale yellow or rarely red; calyx lobes lanceolate, usually glandular-serrate; fruit subglobose, 8-14 mm in diameter, dull red, with thin flesh; nutlets usually 4-5. This species has been found in Indiana only in Dearborn County, where it grew on a wooded slope along Laughery Creek, 3 miles west of Aurora.