Allergy Information

Although the grass family in general is considered significant allergenically, this genus is not typically considered to be problematic. High amounts of wind borne pollen are produced.

Genus Details

Paspalum is a perennial grass grown as an ornamental in the south. Crown grass can flower when short and produces lots of pollen. It can grow to 6' tall.

Pollen Description

Grains are spheroidal to ovoidal, sometimes elliptical. The exine is thin and the surface is granular to finely reticuloid. Pocaceae apertures are 1-porate, with the pores usually circular to ovoidal.

Grains are 22-122 micrometers in diameter.

Genus Distribution

The shaded areas on the map indicates where the genus has been observed in the United States.

- Native, observed in a county 

- Introduced, observed in a county 

- Rarely observed