Green muhly, marsh muhly Muhlenbergia ramosa (Hack.) Makino - Canada, United States, northern Mexico Muhlenbergia ramulosa (Humb., Bonpl. & Kunth) Swallen - United States (Arizona New Mexico Colorado), Mesoamerica, Argentina Muhlenbergia reederorum Soderstr. - Mexico Muhlenbergia repens (J.Presl) Hitchc. - Mexico, United States (Arizona New Mexico Texas Colorado Oklahoma Utah) Muhlenbergia reverchonii – Seep muhly - United States (Texas Oklahoma) Muhlenbergia richardsonis – Mat muhly - Canada (incl Yukon + NWT), United States (Alaska plus northern + western states), northern + central Mexico Muhlenbergia rigens – Deergrass - Mexico, United States (California Nevada Arizona New Mexico Texas) Muhlenbergia rigida (Kunth) Kunth - United States (Arizona New Mexico Texas), Mexico, South America (Colombia to Argentina) Muhlenbergia robusta (E.Fourn.) Hitchc. - Mexico, Central America Muhlenbergia schmitzii Hack. - Mexico Muhlenbergia schreberi – Nimblewill - eastern + central United States, Ontario, Mexico, Uruguay, southern Brazil, northern Argentina Muhlenbergia scoparia Vasey - Mexico Muhlenbergia seatonii Scribn. ex Seaton - Mexico Muhlenbergia sericea (Michx.) P.M.Peterson United States (Texas Alabama Florida Georgia Louisiana Mississippi North Carolina South Carolina) Muhlenbergia setarioides E.Fourn. - Mexico, Central America Muhlenbergia setifolia Vasey - United States (Arizona New Mexico Texas), Mexico Muhlenbergia sinuosa Swallen - United States (Arizona New Mexico), Mexico Muhlenbergia sobolifera (Muhl.) Trin. - eastern + central United States, Ontario Muhlenbergia spatha Columbus - Mexico Muhlenbergia speciosa Vasey - Mexico Muhlenbergia spiciformis Trin. - Mexico, Cuba, United States (New Mexico Texas) Muhlenbergia straminea Hitchc. - Mexico, United States (New Mexico Arizona Texas) Muhlenbergia stricta (J.Presl) Kunth - Mexico Muhlenbergia strictior Beal - Mexico Muhlenbergia subaristata Swallen - Mexico Muhlenbergia subbiflora Hitchc. - Mexico Muhlenbergia sylvatica – Woodland muhly - eastern + central United States, Quebec, Ontario Muhlenbergia tarahumara P.M.Peterson & Columbus - Mexico Muhlenbergia tenella (Kunth) Trin. - Mexico, Central America, Colombia, Argentina Muhlenbergia tenuiflora (Willd.) Britton, Stern & Poggenb. - eastern + central United States, Quebec, Ontario Muhlenbergia tenuifolia (Kunth) Kunth - United States (Texas New Mexico Arizona Colorado), Mexico, Peru, Argentina Muhlenbergia tenuissima (J.Presl) Kunth - Mexico, Central America Muhlenbergia texana Buckley - Mexico, United States (Arizona New Mexico Texas) Muhlenbergia thurberi (Scribn.) Rydb. - Mexico, United States (Texas New Mexico Arizona Colorado Utah Nevada) Muhlenbergia torreyana (Schult.) Hitchc. – New Jersey muhly, Torrey's muhly, Torrey's dropseed - New Jersey New York Delaware Maryland North Carolina Tennessee Georgia Muhlenbergia torreyi (Kunth) Hitchc. ex Bush - southwestern United States, Mexico, Argentina Muhlenbergia trifida Hack. - Mexico, Guatemala Muhlenbergia