2OQ] FLORA OF BOULDER, COLORADO 6 1 



58. S. Lettermannii Vasey. LETTERMANN'S PORCUPINE GRASS. 

 Barren hilltops east of the Flat-irons, 5800 ft. (Daniels, 



184). 

 WYOMING to IDAHO; COLORADO to UTAH. 



39. ORYZOPSIS Michx. MOUNTAIN RICE. 



59. 0. micrantha (Trin. & Rupr.) Thurber. SMALL-FLOW- 

 ERED MOUNTAIN RICE. 



Rocky soil on the mesas and foothills, 5700-8500 ft. (Dan- 

 iels, 269). 

 ASSINIBOIA to MONTANA; NEBRASKA to ARIZONA. 



40. EBIOCOMA Nutt. 



60. E. cuspidata Nutt. [Oryzopsis cuspidata (Nutt.) Benth.]. 

 SILKY MOUNTAIN RICE. 



Barren mesa near entrance to Bear Canon, 5800-6000 ft. 

 (Daniels, 765). 



SASKATCHEWAN to WASHINGTON; TEXAS and MEXICO to 

 CALIFORNIA. 



41. MTJHLENBERGIA Schreb. DROP-SEED GRASS. 



61. M. racemosa (Michx.) B. S. P. [M. glomerata Trin.]. 

 MARSH DROP-SEED GRASS. 



Canon on Green Mt. ; subalpine meadows at Eldora, 

 6000-10000 ft. (Daniels, 526). 



NEWFOUNDLAND to BRITISH COLUMBIA; NEW JERSEY to 

 NEW MEXICO. 



62. M. cuspidata (Torr.) Rydb. [Sporobolus cuspidatus 

 (Torn) Woods]. PRAIRIE RUSH-GRASS. 



Dry ledges, Gregory Canon, 6000 ft. (Daniels, 371). 

 MANITOBA to ALBERTA; MISSOURI to COLORADO. 



63. M. Richardson! (Trin.) Rydb. [Vilfa Richardson^ 

 Trin.; Sporobolus depauperatus Coulter in part]. RICH- 

 ARDSON'S RUSH-GRASS. 



Subalpine meadows and open bogs, Eldora, 8600 ft. (Dan- 

 iels, 840). 



ANTICOSTI to BRITISH COLUMBIA; NEW MEXICO to CALI- 

 FORNIA. 



