Are Mimosa's ever yellow?

[Finn N. Rasmussen]

The genus Mimosa is said to contain about 400 spp. The most common sp. is
probably the widespread weedy Mimosa pudica, which has pink flowers.  The cut
off branches often sold here as "Mimosa" are actually yellow flowered Acacia's,
e.g. A. decurrens.  My question is:  Do all 400 true Mimosa's have pink
flowers? Can you be certain that a "yellow Mimosa" is never a true member of
the genus Mimosa L.?

Finn
                      Finn N. Rasmussen
                      Botanical Laboratory, University of Copenhagen
                      Gothersgade 140, DK-1123 Copenhagen K., Denmark
                      Phone: +45 35 32 21 55   Fax: +45 33 13 91 04
                      Web homepage: http://www.bot.ku.dk
                      Email: FinnR at bot.ku.dk