5. 참나무목 Fagales

1. 수꽃은 물론 암꽃도 보통 꼬리꽃차례에 달린다 ········································································자작나무과 Betulaceae

1. 수꽃은 꼬리꽃차례에 달리고 암꽃은 각두나 송이로 된 총포로 둘러싸여있다 ········································ 참나무과 Fagaceae