50 Order POALES 
Culms conspicuously pilose with long horizontally spread- 
ing hairs. 11. P. przxcocius. 
Ligule obsolete or nearly so. 15. P. latifolium. 
Spikelets turgid, blunt, strongly nerved. 
Spikelets not over 3 mm. long. 12. P. wilcoxianum. 
Spikelets over 3 mm. long. 
Panicle about as wide as long; spikelets less than 3.5 mm. 
long; first empty scale 4% as long as the spikelet. 
13. P. scribnerianum. 
Panicle narrow; spikelets over 3.5 mm. long; first empty 
scale % as long as spikelet. 14. P. liebergii. 
(Key abridged from “North American Species of Panicum”, by 
Hitcheock and Chase.) 
1. Panicum dichotomiflorum Michx. 
Panicum proliferum Lam. 
In the southeastern part of the state. Lincoln; Talmage. 
2. Panicum flexile (Gattinger) Scribn. 
(South Dakota.) 
3. Panicum capillare L. Witch-grass. 
A common weed over most of the state. Ewing; Halsey; Lincoln; 
Stanton county; Valentine. 
4, Panicum barbipulvinatum Nash. 
A common weed all over the state. Belmont; Box Butte county; 
Central City; Dismal river; Grant county; Hooker county; Niobrara; 
North Platte; Simeon; Whitman. 
5. Panicum virgatum L. Switch-grass. 
Common on the prairies over most of the state. Broken Bow; Craw- 
ford; Franklin; Hardy; Lincoln; Mullen; North Platte; Pishelville; 
Talmage; Thedford; Valentine. 
6. Panicum depauperatum Muhl. 
Atkinson; Ewing. 
7. Panicum perlongum Nash. 
Ewing. 
8. Panicum linearifolium Scribn. 
(Kansas and Minnesota.) 
9. Panicum huachuce Ashe. 
Ewing; Loup City; Thomas county; Valentine. 
9a. Panicum huachuce var. silvicola Hitch. & Chase. 
Common over most of the state. Ewing; Grand Island; Kearney; 
Natick; Pishelville; Thedford. 
10. Panicum tennesseense Ashe. 
Minden. 
11. Panicum precocius Hitch. & Chase. 
Broken Bow; Grand Island- 
12. Panicum wilcoxianum Vasey. 
Common in the sand-hills. Callaway; Hastings; Fort Niobrara; 
Lincoln; Minden; Stanton; Thedford; Valentine; Valley county; 
Weigand. 
13. Panicum scribnerianum Nash. 
All over the state. Belmont; Broken Bow; Ewing; Hardy; Lincoln; 
Mullen; Thedford; Valentine; Weeping Water. 
