MANUAL OF THE GRASSES OF THE UNITED STATES 



901 



Agrostis expansa Poir. ex Steud., Nom. 

 Bot. ed. 2. 1 : 40. 1840, as synonym of 

 Cinna arachnoidea Kunth. 



Agrostis longiflora Willd. ex Steud., Nom. 

 Bot. ed. 2. 1: 41. 1840, as synonym of 

 Cinna arachnoidea Kunth. 



Muhlenbergia trichopodes Chapm., Fl. 

 South. U. S. 553. 1860. Based on 

 Agrostis trichopodes Ell. 



Muhlenbergia caespitosa Chapm., Bot. 

 Gaz. 3: 18. 1878. Apalachicola, Fla., 

 Chapman. 



Muhlenbergia capillaris var. trichopodes 

 Vasey, U. S. Natl. Herb. Contrib. 3: 

 66. 1892. Based on Agrostis tricho- 

 podes Ell. 



Podosaemum trichopodes Bush, Amer. 

 Midi. Nat. 7: 30. 1921. Based on 

 Agrostis trichopodes Ell. 

 (46) Muhlenbergia filiculmis Vasey, U. S. 

 Natl. Herb. Contrib. 1: 267. 1893. 

 Green Mountain Falls, Colo., Sheldon 

 [321]. 

 (13) Muhlenbergia filiformis (Thurb.) 

 Rydb., Torrey Bot. Club Bui. 32: 600. 

 1905. Based on Vilfa depauperata var. 

 filiformis Thurb. 



Vilfa depauperata var. filiformis Thurb. in 

 S. Wats, in King, Geol. Ex pi. 40th Par. 

 5: 376. 1871. Yosemite Valley, Calif., 

 Bolander 6091; Donner Lake, Torrey 

 565; East Humboldt Mountains, Nev., 

 Watson 1280; Uinta Mountains, Utah, 

 Watson 1281. 



Vilfa gracillima Thurb. in S. Wats., Bot. 

 Calif. 2: 268. 1880. Not Muhlenbergia 

 gracillima Torr. 1856. California, Sierra 

 Nevada, Brewer [2827]; Yosemite Val- 

 ley, Bolander [6091]. 



Sporobolus gracillimus Vasey, Grasses U. 

 S. Descr. Cat. 44. 1885. Based on 

 Vilfa gracillima Thurb. 



Sporobolus filiformis Rydb., U. S. Natl. 

 Herb. Contrib. 3: 189. 1895. Based on 

 Vilfa depauperata var. filiformis Thurb. 



Sporobolus depauperatus var. filiformis 

 Beal, Grasses N. Amer. 2: 296. 1896. 

 Montana, Williams; Utah, Jones. 



Sporobolus simplex Scribn., U. S. Dept. 

 Agr., Div. Agrost. Bui. 11: 48. 1898. 

 Georgetown, Colo., Rydberg 2411. 



Sporobolus aristatus Rydb., Torrey Bot. 

 Club Bui. 28: 266. 1901. Not Muhlen- 

 bergia aristata Pers. 1805. Big Horn 

 Mountains, Wyo., Tweedy 2196. 



Sporobolus simplex var. thermale Merr., 

 Rhodora 4:48. 1 902. Lolo Hot Springs 

 Mont., Griffiths 302a. 



Muhlenbergia simplex Rydb., Torrey Bot. 

 Club Bui. 32: 600. 1905. Not M. 

 simplex Kunth, 1829. Based on Sporo- 

 bolus simplex Scribn. 



Muhlenbergia aristulata Rydb., Torrev 

 Bot. Club Bui. 32: 600. 1905. Based 

 on Sporobolus aristatus Rydb. 



Muhlenbergia filiformis var. fortis E. H, 



Kelso, Rhodora 38: 298. 1936. Based 

 on Sporobolus simplex Scribn. 



Muhlenbergia idahoensis St. John, Fl. 

 Southeast. Wash, and Adj. Idaho 50. 

 1937. Zaza, Nez Perce County, Idaho, 

 St. John 9085. 

 (3) Muhlenbergia fragilis Swallen, U. S. 

 Natl. Herb. Contrib. 29: 206. 1947. 

 Alpine, Brewster County, Tex., War- 

 nock 517. 

 (38) Muhlenbergia frondosa (Poir.) Fer- 

 nald, Rhodora 45: 235. pi. 750. 1943. 

 Based on Agrostis frondosa Poir. 



Agrostis frondosa Poir. in Lam., Encycl. 

 Sup. 1: 252. 1790. Described from a 

 cultivated or adventive specimen grown 

 in Germany. 



Agrostis lateriflora Michx. Fl. Bor. Amer. 

 1: 53. 1803. Mississippi River [Illi- 

 nois], Michaux. 



Vilfa lateriflora Beauv., Ess. Agrost. 16, 

 147, 181. 1812. Based on Agrostis 

 lateriflora Michx. (Appears erroneously 

 as laterifolia on pages 16 and 147, but 

 correctly on page 181.) 



Cinna lateriflora Kunth, Rev. Gram. 1: 

 67. 1829. Based on Agrostis lateriflora 

 Michx. 



Muhlenbergia lateriflora Trin. ex Kunth, 

 Enum. PI. 1 : 207.' 1833, as synonym of 

 Cinna lateriflora Kunth. 



Calamagi'ostis compressa Doell in Mart., 

 Fl. Bras. 2 3 : 56. 1878. "E seminibus a 

 cl. Glaziou prope Rio de Janeiro lectis 

 in horto bot. Monacensi anno 1869 

 cultura enata." A specimen named in 

 Doell's script and bearing the above data 

 was examined in Doell's herbarium in the 

 Botanical Institute at Freiburg. This 

 agrees perfectly with Doell's description. 

 It is a characteristic specimen of Muhlen- 

 bergia frondosa except that the rachilla 

 is minutely produced beyond the palea, 

 a very rare occurrence in Muhlenbergia. 

 Presumably the seed from Rio de 

 Janeiro failed to germinate, and this 

 species, probably in a neighboring plot, 

 intruded. 

 Muhlenbergia frondosa forma commu- 

 tata (Scribn.) Fernald, Rhodora 45: 

 235. 1943. Based on M. mexicana 

 subsp. commutata Scribn. 



Muhlenbergia mexicana subsp. commutata, 

 Scribn., Rhodora 9: 18. 1907. Maine, 

 Fernald 522 in 1896. 



Muhlenbergia mexicana var. commutata 

 Farwell, Mich. Acad. Sci. Rpt, 17: 181. 

 1916. Based on M. mexicana subsp. 

 commutata Scribn. 



Muhlenbergia commutata Bush, Amer. 

 Midi. Nat. 6: 61. 1919. Based on M. 

 mexicana subsp. commutata Scribn. 



Muhlenbergia mexicana forma commutata 

 Wiegand, Rhodora 26: 1. 1924. Based 

 on M. mexicana subsp. commutata 

 Scribn. 



