Paspalum dilatatum is a species of grass known by the common name dallisgrass, Dallas grass, or sticky heads. It is native to Brazil and Argentina, but it is known throughout the world as an introduced species and at times a common weed. Its rapid growth and spreading rhizomes make it an invasive pest in some areas. It is present in the southern half of North America, southern Europe, much of Africa, Australia, New Zealand, and many tropical and subtropical areas.

Paspalum dilatatum is a food source for several avian species, including the long-tailed widowbird.

Paspalum dilatatum

The common name dallisgrass was derived from A. T. Dallis, a 19th-century farmer who grew the species extensively near La Grange, Georgia.

Paspalum dilatatum

Description

This is a perennial bunch grass forming dense, stiff clumps in the soil and spreading outward. It grows decumbent in a mat or erect to well over 1 m (3 ft) tall. The leaves are mostly hairless, growing up to 35 cm (14 in) long and 2.5 cm (1 in) wide. The inflorescence is divided into a few branches lined neatly with beadlike pairs of green to purple spikelets.

Paspalum dilatatum

References

External links

{ https://projects.ncsu.edu/forage/dallis.htm (Dallis poisoning Cattle)

Jepson Manual Treatment

Grass Manual Treatment

Photo gallery

dilatatum

Grasses of South America

Flora of southern South America

Grasses of Argentina

Flora of Bolivia

Flora of Brazil

Invasive plant species in Sri Lanka