20 .AIEMOIRS OF THE ^■E^V YORK BOTANICAL GARDEN. 



* Andropogon Hallii Hack. Sitzb. Akacj. Wien, 89: 127 [111. Fl. i : 



lOl]. 



Like A. fitrcatiis^ but the joints of the rachis and pedicels pubes- 

 cent with long silky hairs and the awn short and straight or none. 

 Sand hills and badlands in the eastern part of ^Montana. 



Montana: L. F. Ward. 



Yellowstone Park : iS^^, Havden. 



Chaetochloa glauca (L.) Scribner, Bull. U. S. Dept. Agric. Div. 

 Agrost. I : 39 ; PcDiicnni glauciini L. Sp. PI. 56; Setaria glauca 

 Beauv. Agrost. 51 [111. Fl. i: 126: Man. R. M. 404: Bot. Cal. 

 2 : 260] . 



Introduced, especiall}' in fields, along roads and in waste places. 

 Montana: 1883, 6V;v7;;/^;'. 



* Panicum pubescens Lam. Enc. 4: 748 [111. Fl. i : 121] ; Paniciim 



dichotonmin Coult. ]Man. R. M. 404, in part (? )• 



This belongs to the dichotoimim group and is characterized by the 



pubescent sheaths, leaves and spikelets. It grows in meadows up to 



an altitude of 1000 m. 



Montana: Sun River Caiion, 1887, R. S. Will/aiiis, jpj. 



* Panicum thermale Bolander, Proc. Cal. Acad. 2 : 181 ; Panicum 



dichotomuin -pubescens Tweedy, Fl. Yell. Nat. Park, 69. 



It is a very near relative to the preceding, differing principally in 

 the dense velvety pubescence, and is generally of a stunted and 

 bunched habit. It grows in the neighborhood of the hot springs, 

 especially in the white siliceous sand of the geyser formations, at an 

 altitude of 2000-2500 m. 



Montana: Warm Springs, Helena, 1892, Kehcy. 



Yellowstone Park: Hot Springs, 1884, Tzaccdy, 263: 1885, 

 jSo; Lower Geyser Basin, Aug. 4, 1897, Rydbcrg d- Bcssey, jj^6 

 and J 347; Upper Geyser Basin, Aug. 6, JJ-/S ; Mud Springs, 

 187 1, Ha V den. 



Panicum capillare L. Sp. PI. 58 [Man. R. M. 403 ; 111. Fl. i : 



123 ; Bot. Cal. 2 : 258]. 



In waste places, old fields, etc., in the plain regions of the state, 

 ascending to an altitude of a little over 1000 m. 



Montana: Custer Co., 1892, J/r5. Light; Missouri River, 1883, 

 Scribner., J2S (var. mininiuni Engl.). 



