Lemon like fruits on Navel Orange tree
I have a navel orange tree which bear fruits this year with lot of Lemon looking oranges. On the same tree there are Sweet and round oranges may be around 20 and rest are rough skin lemons which are sour.
I have a meyer lemon tree next to it and the lemons are round and soft skin. I am concerned how these lemons are growing on an orange tree. If cross pollinated then atleast the oranges should look like meyer lemons.
Attached pic is the Lemons like fruit from the Orange tree.