Chemical constituents from leaves of Crataegus pinnatifida Bge. 山楂叶的化学成分。
Any of various usually thorny trees or shrubs of the genus Crataegus having clusters of white or pinkish flowers and reddish fruits containing a few one-seeded nutlets. 山楂一种山楂属乔木或灌木，通常带刺，有白色或粉色花簇和微红色内有一些单籽小核的果实。
