40 - POALES 
Blades stiff, erect. 10. P. huachucae. 
Blades lax, spreading, 11. P. huachucae var. silvicola. 
Autumnal form branching from the middle nodes, form- 
ing widely spreading mats. (See also No. 11.) 
12. P. tennesseense. 
Culms conspicuously pilose with long horizontally spread- 
ing hairs. 13. P. praecocius. 
Ligule obsolete or nearly so. 17. P, latifolium. 
Spikelets turgid, blunt, strongly nerved. 
Spikelets not over 3 mm. long. 14, 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. 
15. P. scribnerianum. 
Panicle narrow, spikelets over 3.5 mm. long, first empty 
scale % as long as spikelet. 16. P. leibergii. 
(Key abridged from “North American Species of Panicum,” by Hitch- 
cock and, Chase.) 
1. Panicum dichotomiflorum Michx. 
Panicum proliferum Lam. 
In the southeastern part of the state. Lincoln; Talmage. 
2. Panicum flexile (Gattinger) Scrib. 
(South Dakota.) 
3. Panicum capillare L. 
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; Cen- 
tral City; Dismal River; Grant County; Hooker County; Niobrara; 
North Platte; Simeon; Whitman. 
5. Panicum virgatum L. 
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 & Minnesota.) 
10. Panicum huachucae Ashe. 
Panicum unciphyllum Trin. 
Ewing; Loup City; Thomas County; Valentine. 
11. Panicum huachucae var. silvicola Hitch, & Chase. 
Common over most of the state. Ewing; Grand Island; Kearney; Nat- 
tick; Pishelville; Thedford. 
12. Panicum tennesseense Ashe. 
Minden. 
13. Panicum praecocius Hitch, & Chase. 
Broken Bow; Grand Island. 
