See text Hesperostipa is a genus of grasses in the family Poaceae.

Members of the genus are commonly known as needle-and-thread grass or needlegrass.

[2] The Hesperostipa species, formerly called Stipa, are endemic to North America.

The new name adds Classical Greek: ἕσπερος, romanized: hesperos, lit.

'western', as other Stipa species are found on the Eurasian continent (i.e., the eastern hemisphere).