Needle-and-Thread Grass

Genus Stipa
Grass Family (Poaceae/Graminae)





Needle-and-Thread Grass
(Stipa comata)


This grass grows 2 or 3 feet tall. Each of its seeds has a sharp head and a long thread extending out from it. When the seeds ripen and fall to the ground, changes in temperature and humidity cause this thread to twist, helping the seed to corkscrew into the ground.



Needle-and-Thread Grass





Government Creek Cove
Boulder Mountain
Wayne County, Utah


References


Photographed
by Sandra Bray