MANUAL OF THE GRASSES OF THE UNITED STATES 893 



Epicampes rigens Benth., Jour. Linn. Soc. Bot, 19: 88. 1881. Based on 



the species Thurber described as Cinnn macroura, not that of (H.B.K.) 



Kunth. 

 Crypsinna rigens Jones, Contrib. West. Bot. 14: 8. 1912. Based on Epi- 

 campes rigens Benth. 

 (46) Muhlenbergia rigida (H.B.K.) Kunth, Rev. Gram. 1: 63. 1829. Based on 



Podosaemum rigid urn H.B.K. 

 Podosaemum rigidum H.B.K., Nov. Gen. and Sp. 1: 129. 1815. Mexico, 



Humboldt and Bonpland. 

 Trichochloa rigida Roem. and Schult,. Syst. Veg. 2: 386. 1817. Based on 



Podosaemum rigidum H.B.K. 

 Muhlenbergia berlandieri Trin., Mem. Acad. St. Petersb. VI. Sci. Nat. 4 1 : 299. 



1841. Mexico. Berlandier. 

 (30) Muhlenbergia schreberi Gmel., Syst. Nat, 2: 171. 1791. Based on the 



species described by Schreber (Gen. PL 1: 44. 1789) under Muhlenbergia 



with no specific name, [Pennsvlvanial. 

 Muhlenbergia diffusa Willd., Sp.' PI. 1: 320. 1797. North America. 

 Dilepyrum minutifiorum Michx., Fl. Bor. Amer. 1: 40. 1803. Kentucky 



and Illinois, Michaux. Listed as Dylepyrum muUiflorum by Beauv., Ess. 



Agrost. 160. 1812. 

 Dylepyrum diffusum Beauv., Ess. Agrost. 160. 1812. Name only, referred 



to Muhlenbergia. Probably the same as M. diffusa Willd. 

 Cynodon diffusus Raspail, Ann. Sci. Nat., Bot, 5: 303. 1825. Based on 



"Muhlenbergia Schr." (error for Willd.). 

 Agrostis apetala Bosc; Trin., Mem. Acad. St. Petersb. VI. Sci. Nat. 4 1 : 287. 



1841, as synonym of Muhlenbergia diffusa Schreb. 

 Muhlenbergia botleri Fourn., Mex. PI. 2: 85. 1886. Orizaba, Mexico, Botteri 



87. 

 Muhlenbergia minutifiorum Hitchc, Kans. Acad. Sci. Trans. 14: 140. 1896. 



Based on Dilepyrum minutifiorum Michx. 

 Muhlenbergia schreberi var. palustris (Scribn.) Scribn., Rhodora 9: 17. 



1907. Based on M. palustris Scribn. (Published as M. schreberi palustris.) 

 Muhlenbergia palustris Scribn., LT.S.Dept.Agr., Div. Agrost. Bull. 11: 47. 



1898. District of Columbia, Steele in 1896. 

 Muhlenbergia schreberi var. palustris Scribn.; Robinson, Rhodora 10: 65. 1908. 



Based on M. palustris Scribn. 

 (44) Muhlenbergia setifolia Vasey, Bot. Gaz. 7: 92. 1882. Guadalupe Moun- 

 tains, Tex., Havard. 

 <22) Muhlenbergia sobolifera (Muhl.) Trin., Gram. Unifl. 189. pi. 5. f. 4. 1824. 



Based on Agrostis sobolifera Muhl. 

 Agrostis sobolifera Muhl.; Willd., Enum. PL 95. 1809. Pennsylvania. 

 Achnatherum soboliferum Beauv., Ess. Agrost. 20, 146. 18l2. Based on 



Agrostis sobolifera Muhl. 

 Trichochloa sobolifera Trin., Fund. Agrost. 117. 1820. Based on Agrostis 



sobolifera Muhl. 

 Cinna sobolifera Link, Enum. PL 1: 71. 1821. Based on Agrostis sobolifera 



W T illd. 

 Podosaemum soboliferum Link, Hort. Berol. 1: 83. 1827. Based on Agrostis 



sobolifera Muhl. 

 Muhlenbergia sobolifera var. setigera Scribn., Rhodora 9: 18. 1907. 



Texas, Reverchon 70. (Published as M. sobolifera setigera.) 

 Muhlenbergia sobolifera forma setigera Deam, Ind. Dept. Conserv. Pub. 82: 



163. 1929. Based on M. sobolifera setigera Scribn. 

 (7) Muhlenbergia squarrosa (Trin.) Rydb., Bull. Torrey Bot. Club 36: 531. 



1909. Based on Vilfa squarrosa Trin. 

 Vilfa squarrosa Trin., Mem. Acad. St. Petersb. VI. Sci. Nat. 4 1 : 100. 1840. 



Menzies Island [Columbia River, Wash.]. 

 Vilfa richardsonis Trin., Mem. Acad. St. Petersb. VI. Sci. Nat. 4 1 : 103. 1840. 



North America, Richardson. 

 Muhlenbergia aspericaulis Nees; Trin. Mem. Acad. St. Petersb. VI. Sci. Nat. 4 1 : 



103. 1840, as svnonvm of Vilfa richardsonis Trin. 

 Vilfa depauperata Torr/; Hook., FL Bor. Amer. 2: 257. pi. 36. 1840. Colum- 

 bia River, from Menzies Island upward, Douglas. 

 Sporobolus depauperatus Scribn., Bull. Torrey Bot. Club 9: 103. 1882. Based 



on Vilfa depauperata Torr. 

 Sporobolus aspericaulis Scribn., Bot. Gaz. 21: 15. 1896. Based on Muhlen- 

 bergia aspericaulis Nees. 



