Cypresses

With one small mutation, giving you two ridges, one down each side of your seeds, you gain a slightly better distribution from each plant than before.  This is enough to help you cross continents, one seed fall at a time, over tens of thousands of years.

But there might be a better way, or at least a faster way.

Time has passed in the animal kingdom too, and there are now creatures called birds.  They like seeds.  Sometimes they eat the seeds, fly a long way, and then poop out the seed still in good enough condition to grow and become a new plant.  That's a lot better than being blown an extra thirty or fifty feet!

You could encourage the birds to help...

Feathered friends.
Sky rats.