Cowpeas, soja beans, beggarweed, velvet beans, alfalfa and melilotus can all be grown in the pecan area.    From Wordnik.com.  [The Pecan and its Culture] Reference

Trifolium melilotus officinalis. tSteenklinte.    From Wordnik.com.  [Allgemeines Polyglotten-Lexicon der Naturgeschichte mit erklaerenden Anmerkungen] Reference