|definition||Distribution: This genus consists of c. 600 spp that are distributed in temperate
Northern Hemisphere and high altitude tropics. In Australia many species from this
family have been cultivated in cooler regions but only 1 possibly naturalised.
Description: This genus consists of trees (rarely shrubs) that are deciduous or evergreen, monoecious.
For more details regarding the description of species within this genus please see: http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=gn&name=Quercus
Pollen Morphology: The pollen produced by this genus have a rounded triangular shapre in polar view and a flattened oval (oblate) shape in equatorial view. The size of these grains is between 20-30um in polar view and they have three colpi that are short with ragged edges that protrude out of the grain. The surface texture of these grains is slightly granular (scabrate).