Hesperostipa Explained

Hesperostipa is a genus of grasses in the family Poaceae. Members of the genus are commonly known as needle-and-thread grass or needlegrass.

The Hesperostipa species, formerly called Stipa, are endemic to North America. The new name adds, as other Stipa species are found on the Eurasian continent (i.e., the eastern hemisphere).^{[1] [2]}

Selected species

• Hesperostipa comata (Trin. & Rupr.) Barkworth  - needle-and-thread grass
  • Hesperostipa comata subsp. comata
  • Hesperostipa comata subsp. intermedia (Scribn. & Tweedy) Barkworth
• Hesperostipa curtiseta (Hitchc.) Barkworth  - Canadian needlegrass
• Hesperostipa neomexicana (Thurb.) Barkworth  - New Mexico needlegrass
• Hesperostipa saxicola (Hitchc.) Valdés-Reyna & Barkworth
• Hesperostipa spartea (Trin.) Barkworth  - porcupine grass^[3]

Notes and References

1. Web site: Henry George Liddell, Robert Scott, An Intermediate Greek-English Lexicon, ἕσπερος. 2021-08-25. www.perseus.tufts.edu.
2. Barkworth. Mary E.. 1993. North American Stipeae (Gramineae): Taxonomic changes and other comments. Phytologia. 74. 1–25. 10.5962/bhl.part.2304. free.
3. Web site: GRIN Species Records of Hesperostipa . Germplasm Resources Information Network . United States Department of Agriculture . 2013-08-16.