34 PLANTS BAKERIAN.E. 



SPARGANIUM ANGUSTIFOLIUM, Michx. Fl. ii, 189. At 

 1,000 feet, mountains, near Pagosa Peak, 15 Aug., in flower 

 only; n. 137. 



ALISMACE.E. 



ALISMA BREVIPES, Greene, Pitt, iv, 158. Piedra, 12 July; 

 n. 138. 



GRAMINE.E. 



There is perhaps no section of the Middle West which 

 presents more interesting or important agrostological prob- 

 lems than does this field of our 1899 explorations and 

 researches. The pasturage is almost everywhere here most 

 excellent ; and even the alpine grassy slopes of vast extent 

 far above the limit of trees are converted into a sheep pas- 

 ture. And the still richer Piedra Meadows are famed 

 throughout the whole southern Rocky Mountain region. 

 The less elevated and more arid parts of the country have 

 also their own grass flora of much importance, and this sec- 

 tion in particular calls for careful investigation and experi- 

 mentation in relation to the preservation and propagation 

 of its forage plants. 



In the determination of the species of the following list, 

 invaluable service has been rendered by Mr. F. L. Scribner, 

 to whom a set of specimens was sent for identification, and 

 by the late Mr. T. A. Williams. Later Mr. C. L. Shear furn- 

 ished some important additions and corrections. The 

 bibliographic citations and one or more alterations in 

 nomenclature have been supplied by Dr. Greene. The 

 somewhat extensive field notes are my own. 



CARL F. BAKER. 



PANICUM CAPILLARE, Linn. Sp. 58. In stony dry river 

 bed at Piedra, Colo., 14 July. 



