Pursh's Lotus
Acmispon americanus

The only Lotus with red veins.

Acmis'pon: presumably from the Greek acme, "a point or edge,"
and explained as "Point hooked" in probable reference to the hook-tipped fruit.

Formerly Lotus purshianas named for Frederick Traugott Pursh.
The change in the species name unfortunately loses reference
to this famous plant collector.