“…The genus contains approximately 540 species (Simon et al, 2011), about 38% of which have been analysed to date (Erdtman 1945(Erdtman , 1952Van Campo & Guinet, 1961;Barros, 1966;Guinet, 1969;Sorsa, 1969;Barth, 1973;Silvestre-Capelato & Melhem, 1997;Caccavari, 1985Caccavari, , 1986aCaccavari, , 1986bCaccavari, , 1987Caccavari, , 1988Caccavari, , 1989Grether & Martínez-Bernal, 1996;Grether, 1997;Martínez-Bernal, 2006;Flores-Cruz et al, 2006;Lima et al, 2008;Buril et al, 2010). These studies revealed the group's diverse pollen morphology with respect to grain number per polyad (4, 8, 12 or 16), and polyad size and shape, characterising Mimosa as a eurypalynous genus.…”