20/] FLORA OF BOULDER, COLORADO 59 



33. CHAETOCHLOA Scribn. Foxtail. 



46. C. glauca (L.) Scribn. [Sctaria glauca (L.) Beauv.]. 

 Yellow foxtail. 



Along streets and waste places, 5 100-5700 ft. (Daniels, 



773)- 



Europe, thence to North America. 



47. C. viridis (L.) Scribn. [S. viridis (L.) Beauv.]. Green 

 foxtail. 



With the preceding, but far more common, 5100-6000 ft. 

 (Daniels, 507). 



Europe, thence to North America. 



48. C. Italica (L.) Scribn. [S. Italica (L.) Kunth.]. Italian 

 millet. 



Escaped to roads and waste places, 5100-5700 ft. (Daniels)' 

 The Old World, thence to the New. 



34. CENCHRUS L. Bur-grass. 



49. C. Carolinianus Walt. [C. tribuloides Auct., not L.]. 

 Sand-bur. 



Along railroads and on the sandy shores of streams, 5100- 

 6500 ft. (Daniels, 776). 



Maine to Minnesota; Florida to Texas and Colorado. 



35. HOMALOCENCHFOJS Mieg. Catch-fly crass. 



50. H. oryzoides (L.) Poll. [Leersia oryzoides (L.) Sw.]. 

 Rice cut-grass. 



Swales, streams, and irrigation ditches, 5 100-6000 ft. (Dan- 

 iels, 786). 



Nova Scotia to Washington; Florida to California: 

 Europe: Asia. 



36. PHALAFJS L. Canary-grass. 



51. P. arundinacea L. Reed canary-grass. 



Swales and wet meadows near Boulder lake, 5300 ft. 

 (Daniels, 732). 



Temperate North America: Europe: Asia. 



