This shrub is a heavy pollinator, and is potentially very allergenic.
Mulberries have simple, alternate leaves and bear fruit that is beneficial to humans. Where present, it commonly grows in large numbers, frequently in shrub form. The family Moraceae consists of 40 genera and approximately 1000 species. This plant is the topic of the children's nursery song "here we go 'round the mulberry bush".
Pollen grains are spheroidal and 2-3 (-4) porate; the pores usually circular. The sexine is tectate and usually scabrate.
Pollen grains are usually between 17-21 micrometers.
The shaded areas on the map indicates where the genus has been observed in the United States.
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