You are bidding on 5 seeds of Carpinus caroliniana.

 It is a beautiful tree that gets green leaves and is a great shade tree, but it's amazing rippled grey trunks are absolutely stunning and architectural.  These beautiful plants are hardy to USDA zone 4 or possibly colder with protection.  They would make excellent additions to your rare plant collection, or just make a unique statement in your yard.

HAPPY GARDENING :)