Castanea alnifolia - Bush Chinkapin* Castanea crenata - Japanese Chestnut Castanea entata - American Chestnut Castanea henryi - Henry's Chestnut Castanea mollissima - Chinese Chestnut Castanea ozarkensis - Ozark Chinkapin Castanea pumila - Allegheny Chinkapin Castanea sativa - Sweet Chestnut Castanea seguinii - Seguin's Chestnut * treated as a synonym of C. pumila by many authors