Muhlenbergia expansa (Poir.) Trin., Gram. Unifl. Sesquifl.: 193. 1824 sec. Dávila & al. 2006
- =Agrostis arachnoides Poir., Encycl. Suppl. 1: 249. 1810 syn. sec. Dávila & al. 2006
- =Podosemum purpureum (P. Beauv.) P. Beauv., Ess. Agrostogr.: 176. 1812 syn. sec. Dávila & al. 2006
- =Vilfa arachnoidea (Poir.) P. Beauv., Ess. Agrostogr.: 147, 181. 1812 syn. sec. Dávila & al. 2006
- =Agrostis trichopodes Elliott, Sketch Bot. S. Carolina 1(2): 135–136, pl. 8, f. 1. 1816 syn. sec. Dávila & al. 2006
- =Cinna arachnoidea (Poir.) Kunth, Révis. Gramin. 1: 67. 1829 syn. sec. Dávila & al. 2006
- =Agrostis rubicunda Bosc ex Desv. in Mém. Soc. Agric. Angers 1: 159. 1831 syn. sec. Dávila & al. 2006
- =Muhlenbergia arachnoidea Trin. ex Kunth, Enum. Pl. 1: 207. 1833 syn. sec. Dávila & al. 2006
- =Agrostis expansa (Poir.) Poir. ex Steud., Nomencl. Bot., ed. 2, 1: 40. 1840 syn. sec. Dávila & al. 2006
- =Agrostis longiflora Willd. ex Steud., Nomencl. Bot. 1: 41. 1840 syn. sec. Dávila & al. 2006
- =Muhlenbergia trichopodes (Elliott) Chapm., Fl. South. U.S.: 553. 1860 syn. sec. Dávila & al. 2006
- =Muhlenbergia caespitosa Chapm. in Bot. Gaz. 3(3): 18. 1878 syn. sec. Dávila & al. 2006
- =Muhlenbergia capillaris var. trichopodes (Elliott) Vasey in Contr. U. S. Natl. Herb. 3: 66. 1892 syn. sec. Dávila & al. 2006
- =Podosemum trichopodes (Elliott) Bush in Amer. Midl. Naturalist 7: 30. 1921 syn. sec. Dávila & al. 2006