Sporobolus cryptandrus is a species of grass known as sand dropseed.

[1] It is native to North America, where it is widespread in southern Canada, most of the United States, and northern Mexico.

The inflorescence is dense and narrow when new, spreading out and becoming diffuse, with some branches sticking straight out, with age.

[2][3] Sand dropseed is a common grass in many types of North American prairies and grows in a wide variety of other habitats, including disturbed areas such as roadsides.

The seeds of this grass provide food for small birds and mammals, including scaled quail (Callipepla squamata) and black-tailed prairie dogs (Cynomys ludovicianus).