WOOTON AND STANDLEY—FLORA OF NEW MEXICO, 71 
11. Muhlenbergia squarrosa (Trin.) Rydb. Bull. Torrey Club 36: 531. 1909. 
Vilfa squarrosa Trin. Mém. Acad. St. Pétersb. VI. Sci. Nat. 3': 100. 1840. 
Tyre Locauiry: North America. 
Rance: British America to California and Mexico. 
New Mexico: Tunitcha Mountains; Chama; Ensenada; Sandia Mountains; Rio 
Pueblo; Pecos; Grants Station. Transition Zone. 
12. Muhlenbergia lemmoni Scribn. Contr. U. 8. Nat. Herb. 1: 56, 1890. 
Type LocaLity: Ballinger, Runnels County, Texas. 
Rance: Western Texas to Arizona and Mexico. 
New Mexico: Organ Mountains (Wooton). Hillsides. 
13. Muhlenbergia wrightii Vasey; Coulter, Man. Rocky Mount. 409. 1885. 
Type Locatity: ‘“ New Mexico.” 
RanaeE: Colorado to Mexico. 
New Mexico: Baldy; Johnsons Mesa; Trout Springs; El Rito Creek; Las Vegas; 
near Datil; near La Jara; Kingston; Winter Folly. Damp mountain slopes, in the 
Transition Zone. 
14. Muhlenbergia cuspidata (Torr.) Rydb. Bull. Torrey Club 32: 599. 1905. 
Vilfa cuspidata Torr.; Hook. Fl. Bor. Amer, 2: 288. 1839. 
Type tocauty: “ Banks of the Saskatchawan, near the Rocky Mountains.” 
Ranae: British America to New Mexico and Missouri. 
New Mexico: Pecos; Cross L Ranch; Kingston. Open slopes, in the Upper 
Sonoran Zone. 
15. Muhlenbergia thurberi (Scribn.) Rydb. Bull. Torrey Club 32: 601. 1905. 
Sporobolus thurberi Scribn. U. S. Dept. Agr. Div. Agrost. Bull. 11: 48. 1898. 
Type LocALity: Plaza Larga, New Mexico. Type collected by Bigelow. 
Ranae: Colorado to New Mexico. 
New Mexico: Plaza Larga; Carrizo Mountains; Eagle Creek. Dry hills, in the 
Upper Sonoran Zone. 
16. Muhlenbergia repens (Presl) Hitchc. in Jepson, Fl. Calif. 1: 111. 1912. 
APAREJO GRASS. 
Sporobolus repens Presl, Rel. Haenk. 1: 241. 1830. 
Vilfa utilis Torr. U. 8. Rep. Expl. Miss. Pacif. 5: 365. 1857. 
Sporobolus utilis Scribn. U. 8. Dept. Agr. Div. Agrost. Bull. 17: 171. 1899. 
Mulhlenbergia utilis Rydb.; Woot. & Stand]. N. Mex. Agr. Exp. Sta, Bull. 81: 
74. 1912. 
Type LocaLity: Mexico, 
Ranae: Western Texas to southern California. 
New Mexico: Kingston; Mangas Springs; Salinas; Tularosa; Fort Bayard; Thorn- 
ton; Raton Mountains; Deming; Mesilla Valley. Plains and low hills, in the Lower 
and Upper Sonoran zones. 
Aparejo grass receives its name from its use by the Mexicans in packing their 
‘‘aparejos” or pads which are a substitute for pack saddles. It is a rather aggressive 
weed in the lower Rio Grande Valley, crowding out grasses and other plants. 
17. Muhlenbergia trifida Hack. Repert. Nov. Sp. Fedde 8: 518. 1910. 
Type Locality: Michoacan, Mexico. 
Ranae: Western Texas and Colorado to California and Mexico. 
New Mexico: Santa Fe and Las Vegas mountains; Johnsons Mesa; Raton Moun- 
tains; Tunitcha Mountains; Chama; Grants Station; Mogollon Mountains; Black 
Range; Burro Mountains; San Luis Mountains; Orgun Mountains; White Mountains. 
Open hills and in canyons, in the Upper Sonoran and Transition zones, 
