Crataegus lettermanii Sargent, Bot. Gaz. 31: 220. 1901 (as lettermani); C. collina var. secta (Sargent) E. J. Palmer; C. secta Sargent

Leaf blades broadly elliptic, 5–7.5 cm, nearly full grown at anthesis, length/width = 1.3, chartaceous, lobes 1 or 2 per side, evident, max LII 20%, lobe apex obtuse, margins serrate, teeth 1 mm, apex subacute to obtuse, adaxial surface matte, pubescent young. Inflorescence branches pubescent. Flowers 14–18 mm diam.; stamens 5–15(–20), anthers white or cream.

Flowering Apr; fruiting Sep–Oct. Pastures, fencerows, scrub, open woodlands; 10–500 m; Mo.

Variety lettermanii has leaves rather large for Crataegus collina; they are also relatively wide and have well-developed, obtuse lobes, making it like a larger var. hirtiflora.