36 
POALES 
3. Elymus. 156. 
Flowering scales awned, 
Spikelets spreading. 
Awns of flowering scales less than 2 cm. long. 
Empty scales narrowly awl-shaped, spikes slender. 
1. E. striatus. 
Empty scales narrowly lanceolate, spikes stout. 
Flowering scales glabrous, 2. E. virginicus. 
Flowering scales pubescent. 3. E. hirsutiglumis. 
Awns of flowering scales over 2 cm. long. 
‘Spikes slender, peduncles long exserted. 
Flowering scales hirsute, 4. E. canadensis. 
Flowering scales merely hispidulous, 6. E. brachystachys. 
Spikes stout, usually partly included at the base. 5. E. robustus. 
Spikelets appressed. 
Empty scales acuminate to short awned; 3-6 flowered. 7. E. glaucus. 
Empty scales long awned; 1-3 flowered. 8. E. macounii. 
Flowering scale awnless. 9. E, condensatus. 
1. Elymus striatus Willd. Slender Wild-rye. 
Throughout the state. Belmont; Callaway; Franklin; Long Pine; 
Plainview; Sioux County; Thomas County. : 
Ja. Elymus striatus var, Arkansanus (Scrib. & Ball.) Hitche. 
Red Cloud; Weeping Water. 
3. Elymus hirsutiglumis (Scribn. & Sm.) 
Merriman; Nemaha; Red Cloud. 
4. Elymus canadensis L. Wild Rye. 
Common all over the state. Anselmo; Aten; Belmont; Broken Bow; 
Cherry County; Halsey; Hat Creek; Hardy; Kearney; Mullen; Red 
Cloud. 
5. Elymus robustus Scribn. & Sm. 
Common throughout the state. Box Butte County; Callaway; Halsey; 
Lincoln; Minden. 
6. Elymus brachystachys Scribn. & Ball. 
On dry plains in the western part of the state. Callaway; Ewing; 
Red Cloud; Wood Lake. 
7. Elymus glaucus Buckl. 
Culbertson; Lincoln; Mullen; Newcastle. 
8. Elymus macounii Vasey. 
In the eastern part of the state, not common. Cass County; Nehaw- 
ka; O'Neill; Red Cloud; Fort Robinson; Whitman. 
9. Elymus condensatus Presl. 
In wet saline soil in the western part of the state. Glen; Newark; 
Nemaha; Valley County, 
4, Sitanion, 155. 
1. Sitanion elymoides Raf. 
In dry soil in the western part of the state. Chadron; Scotts Bluff 
County; Sioux County. 
