898 MISC. PUBLICATION 200, U. S. DEPT. OF AGRICULTURE 



(4) Oryzopsis exigua Thurb., in Wilkes, U.S. Expl. Exped. Bot. 17: 481. 1874. 

 Cascade Mountains, Oreg., Wilkes Expl. Exped. 



(3) Oryzopsis hendersoni Vasey, Contrib. U.S. Natl. Herb. 1: 267. 1893. 



[Clements Mountain, near North Yakima], 24 Henderson 2249. 

 Oryzopsis exigua var. hendersoni Jones, Contrib. West. Bot. 14: 11. 1912. 



Based on 0. hendersoni Vasey. 

 (12) Oryzopsis hymenoides (Roem. and Schult.) Ricker; Piper, Contrib. U.S. 



Natl. Herb. 11: 109. 1906. Based on Stipa hymenoides Roem. and Schult. 

 Stipa membranacea Pursh, Fl. Amer. Sept. 2: 728. 1814. Not S. membranacea 



L., 1753. Banks of the Missouri River, Bradbury. 

 Stipa hymenoides Roem. and Schult., Syst. Veg. 2: 339. 1817. Based on 



Stipa membranacea Pursh. 

 Eriocoma cuspidata Nutt., Gen. PL 1: 40. 1818. Grassv plains of the Missouri 



[type from "Platte Plains", Nuttall]. 

 Milium cuspidatum Spreng., Syst. Veg. 1: 251. 1825. Based on Eriocoma 



cuspidata Nutt. 

 Urachne lanata Trin. and Rupr., Mem. Acad. St. Petersb. VI. Sci. Nat. 1: 126. 



1834. North America. 

 Eriocoma membranacea Steud., Nom. Bot. ed. 2. 1: 586. 1840, as synonym of 



Urachne lanata Trin. 

 Fendleria rhynchelytroides Steud., Svn. PI. Glum. 1: 420. 1854. New Mexico, 



Fendler 979. 

 Oryzopsis cuspidata Benth.; Vasey, Grasses U.S. 23. 1883. Based on Eriocoma 



cuspidata Nutt. 

 Oryzopsis membranacea Vasey, U.S.Dept.Agr., Div. Bot. Bull. 12 2 : pi. 10. 1891. 



Based on Stipa membranacea Pursh. 

 Eriocoma membranacea Beal, Grasses N.Amer. 2: 232. 1896. Based on Stipa 



membranacea Pursh. 

 Eriocoma hymenoides Rydb., Bull. Torrey Bot. Club 39: 102. 1912. Based on 



Stipa hymenoides Roem. and Schult. 

 (7) Oryzopsis kingii (Boland.) Beal, Grasses N.Amer. 2: 229. 1896. Based on 



Stipa kingii Boland. 

 Stipa kingii Boland., Calif. Acad. Sci. Proc. 4: 170. 1872. Mount Dana, 



Calif., Bolander 6076 [error for 6097]. 

 (2) Oryzopsis micrantha (Trin. and Rupr.) Thurb. Acad. Nat. Sci. Phila Proc. 



1863:' 78. 1863. Based on Urachne micrantha Trin. and Rupr. 

 Urachne micrantha Trin. and Rupr., Mem. Acad. St. Petersb. VI. Sci. Nat. 5 1 : 



16. 1842. North America [type from Saskatchewan]. 

 (1) Oryzopsis miliacea (L.) Benth. and Hook.; Aschers. and Schweinf., Mem. 



Inst. Egypte 2: 169. 1887. Presumably based on Agrostis miliacea L. 

 Agrostis miliacea L., Sp. PL 61. 1753. Europe. 

 Achnatherum miliaceum Beauv., Ess. Agrost. 20, 146, 148. 1812. Based on 



Agrostis miliacea L. 

 Piptatherum miliaceum Coss., Notes Crit. 129. 1851. Based on Agrostis 



miliacea L. 



(5) Oryzopsis pungens (Torr.) Hitchc, Contrib. U.S. Natl. Herb. 12: 151. 



1908. Based on Milium pungens Torr. 



Milium pungens Torr.; Spreng., Neu. Entd. 2: 102. 1821. "Schenectady in 

 Massachusetana. " [Error for New York.] 



Oryzopsis parviflora Nutt., Jour. Acad. Nat. Sci. Phila. 3: 125. 1823. Bellows 

 Falls, Vt. 



Panicum firmum Kunth, Rev. Gram. 1: 37. 1829. Based on Milium pungens 

 Torr. 



Urachne brevicaudata Trin., Mem. Acad. St. Petersb. VI. Sci. Nat. 1: 127. 

 1834. Lake Winnipeg, Canada. 



Urachne canadensis Torr. and Gray; Trin. and Rupr., Mem. Acad. St. Petersb. 

 VI. Sci. Natl. 5 1 : 17. 1842, as synonym of Urachne brevicaudata Trin. 

 (9) Oryzopsis racemosa (J. E. Smith) Ricker; Hitchc, Rhodora 8: 210. 1906. 

 Based on Milium racemosum J. E. Smith. 



Milium racemosum J. E. Smith, in Rees's Cycl. 23: Milium no. 15. 1813. 

 Lancaster, Pa., Muhlenberg. 



Oryzopsis melanocarpa MuhL, Descr. Gram. 79. 1817. Pennsylvania, 

 Muhlenberg. 



Piptatherum nigrum Torr., Fl. North, and Mid. U.S. 1: 79. 1823. Williams- 

 town and Deerfield, Mass.; Kingston and Fishkill Mountains, N.Y.; Penn- 

 sylvania, Muhlenberg. 



« See Piper, Contrib. U.S. Natl. Herb. 11: 109. 1906. 



