46 Order POALES 
Spikelets 3-6-flowered; awns of the flowering scales often 
twice as long as the scales. 8. E. glaucus. 
Flowering scales awnless or very short awned. 
Empty scales awl-shaped, spike 1-4 dm. long. 9. E. condensatus. 
Empty scales broader, spikes not much over 1 dm. long. 
10. E. curvatus. 
1. Elymus jejunus (Ramaley) Rydb. : 
Rare.. Mullen. 
2. Elymus virginicus L. Wild Rye. 
Mostly along streams in moist soil. Belmont; Callaway; Crete; 
Halsey; Lincoln; Red Cloud. 
3. Elymus canadensis L. Common Wild Rye. 
Common all over the state. Variable, and several forms are con- 
sidered as distinct species by most recent authors. Forms with large 
thick spikes have been called E. robustus, forms with very pubescent 
glumes E. hirsutiglumis, and forms with smooth glumes E. brachy- 
stachys. Anselmo; Aten; Belmont; Broken Bow; Callaway; Halsey; 
Hardy; Hat Creek; Kearney; Lincoln; Minden; Merriman; Mullen; 
Nemaha; Red Cloud. 
4, Elymus striatus Willd. Slender Wild Rye. 
Common over must of the state. Belmont; Callaway; Franklin; Long 
Pine; Nemaha. 
5. Elymus arkansanus Scribn. and Ball. 
Sometimes considered a variety of the last. Red Cloud; Stamford; 
Weeping Water. 
6. Elymus vulpinus Rydb. 
Bottom lands in the western part of the state. Chadron; Whitman. 
7. Elymus macounii Vasey. 
In prairies, not common. Cass county; Beatrice; Fort Robinson; 
O’Neill; Red Cloud. 
8. Elymus glaucus Buckl. 
In moist soil. Culbertson; Lincoln; Mullen; Newcastle. 
9. Elymus condensatus Presl. Giant Rye-grass. 
In wet saline soil. Glen; Nemaha; Newark; Valley county. 
10. Elymus curvatus Piper. 
In wet soil near Halsey. 
4. Sitanion. 155. 
1. Sitanion elymoides Raf. 
In dry soil in the western part of the state. Chadron; Scotts Bluff 
county; Sioux county. 
5. Hystrix. 158. 
1. Hystrix hystrix (L.) Millsp. Bottle-brush Grass. 
Hystrix patula Moench. 
In the eastern part of the state, not common. Cass county; Ne- 
hawka; Northeast Nebraska; Wahoo; Weeping Water. 
6. Hordeum. 154. 
Empty scales awnlike, 2-6 cm. long. 1. H. jubatum. 
Empty scales 2 cm. or less long. 2. H. pusillum. 
1. Hordeum jubatum L. Squirrel-tail Grass. 
A common weed all over the state. Feeding hay containing large 
