Horntoad said:
all three of those mentioned were once considers vars. of Mimosa quadrivalvis.
I'm afraid the jury's still out on this one. The Catalogue of Life, to which we generally assign preference because it seems to have the most up-to-date information, and GRIN still recognize Mimosa quadrivalvis var. hystricina, Mimosa quadrivalvis var. latidens, and Mimosa quadrivalvis var. nuttallii as accepted names and do not list M. hystricina, M. latidens, or M. nuttallii as accepted names.
ITIS, on the other hand, lists the three vars. as synonyms of M. hystricina, M. latidens, and M. nuttallii, and The Plant List actually recognizes all six as accepted names.
Accordingly, we have listed all six in our database, but there probably will be changes in the future, and three are most likely to be reclassified as synonyms of three others.
