Crataegus

Shrub or small tree, to 20 ft., of dense growth, with numerous long and slender spines:lvs. rather slender-petioles, broadly elliptic or ovate, doubly serrate. glabrous , shining and dark green above,  almost glabrous beneath : corymbs more or less villous; fls. fragrant; calyx-teeth glandular-serrate: fr. X in. in diam.