Cenchrus longispinus

Mat Sandbur is a loosely clumped summer annual grass with branching stems, referred to as culms, of up to 2.5' long.  Under certain conditions, it can persist as a biennial or perennial.  It is also considered a winter annual, that is, it can live for one year, with a winter included.

Several culms are produced from the base that may sprawl along the ground or stand in an ascending fashion.  In their natural habitat, they can be found growing in sandy sites, abandoned fields and in areas that have been disturbed recently.  

Its aggressive, invasive nature is intensified by its bur's ability to latch onto the fur of animals and the clothing of passersby to be spread to other locations. They can also attach themselves to vehicle tires or be washed to new locations via rainfall.  Additional rooting can take place where the nodes touch the ground.  

The main flower stalk axis is wavy. Typically, each spike can contain 40 and occasionally up to 50 burs. The spike is enclosed by a leaf sheath.  

They often form large mats and can grow up to 2' in length.  

Insects, Diseases, and Other Plant Problems:  This plant can be invasive.  The burs can prick the skin when dry out. Farm animals are often injured when grazing in locations where this plant is growing, often injuring their mouths and eye.