From The Collaborative International Dictionary of English v.0.48 :
Hedysarum \Hedysarum\ n.
A genus of herbs of Northern temperate regions.
Syn: genus Hedysarum.
[WordNet 1.5]
From WordNet (r) 3.0 (2006) :
Hedysarum
n 1: genus of herbs of north temperate regions [syn:
Hedysarum, genus Hedysarum]