The differences between Elves and Men

[Fingolfin of the Noldor]

In one of Tolkiens letters he states that Elves had leaf shaped ears. Most leaves come to a point, or points.

Actually I believe you are thinking of the linguistic connection between "lhaw" and "las." in the etymologies.

The only thing which, i believe, is stated in the letters is that hobbits have slightly pointed "elvish" ears. whether this is a reference to the quendi or rather traditional elves is a matter of debate.