button grass
Dactyloctenium radulans (R.Br.) P.Beauv.

Dactyloctenium radulans, commonly known as button grass, is a species in the Poaceae family. It was first described in 1812 and is native to a wide range of regions, including parts of Europe and North America, as well as several countries in Oceania.
Description
Dactyloctenium radulans is a grass species belonging to the Poaceae family. It is found in various regions such as Belgium, France, the Netherlands, Great Britain, and the United States, as well as in states like Arizona, Florida, and Massachusetts. It also occurs in Australia, including New South Wales, Northern Territory, Queensland, South Australia, Victoria, and Western Australia. The species was formally published in 1812 and is recognized by its common name, button grass, in English.
Other common names
ButtongrassButton-grasseight-day grassbutton grassfinger grasssmall crowfoot
Distribution
Belgium · Flemish Region · Walloon Region · France · The Netherlands · Great Britain · England · conterminous 48 United States · Arizona · Florida · Massachusetts · New South Wales · Northern Territory · Queensland · South Australia · South Carolina · Victoria · Western Australia
Synonyms
Dactyloctenium radulans var. conglobatumEleusine radulansDactyloctenium radulans f. conglobatum