Kingdom;Plantae

Phylum:Streptophyta

Class:Equisetopsida

Subclass:Magnoliidae

Order:Poales

Family:Poaceae

 Genus:Setaria

 Species: parviflora

Description:it's 

Thrives in moist ground, including wetlands, marshes, disturbed areas, and along the margins of salt marshes. It is Known for its cylindrical seedheads, which tend to droop when ripe. 

Inflorescence is 

 seedheads are formed on branches rather than directly from the main axis of the inflorescence. 

Uses: good forage for livestock and a source of food for humans. It's also used for environmental purposes, as a material, and potentially for medicinal purposes.