126 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Specimens examined: Wilson Creek, Lake & Hull, August, 1892; Wawawai, Elmer 

 1024; Brodie, June, 1898; Parker, A. D. Dunn; Priest Rapids, Cotton 1389; Prosser, 

 Cotton 733. 



Zonal distribution: Upper Sonoran. 



2. Eatonia peimsylvanica (DC.) Gray, Man. ed. 2. 558. 1856. 



Koeleria pennsylvanica DC. Cat. Ilort. Monsp. 117. 1813. 



Type locality: "Penn." 



Range: New Brunswick to British Columbia, south to Georgia and Texas. 



Specimens examined: Blue Mountains, Lake & Hull 61; Steptoe, Vasey 63; Usk, 

 Kreager 358; Toppenish, Cotton 802. 



Zonal distribution: Arid Transition. 



KOELERIA. 



1. Koeleria cristata (L.) Pers. Syn. 1: 97. 1805. 



Aira cristata L. Sp. PI. 1: 63. 1753. 



Type locality: "Habitat in Angliae, Galliae, Ilelvetiae siccioribus." 



Range : British Columbia to Athabasca, southward to Arizona, Kansas, and Pennsylvania. 



Specimens examined: Olympic Mountmns, Elmer 1668; Alki Point, Pipe/', June, 1891; 

 Fidalgo Island, Lijall in 1858; Nisqually, Wilkes Expedition; Ophir, Elmer 513; Fort 

 Okanogan, Wilkes Expedition; Wenache, Whited 1131; Douglas County, Spillman, May, 

 1896; Toppenish, Henderson 2210; Tieton River, Cotton 452; Rattlesnake Mountains, 

 Cotton 411 ; Klickitat River, Flett 141 1 ; west Klickitat County, Suksdorf 1110 (a very pubes- 

 cent form); Spokane, Piper 2723; Spok&ne, Kieager I (very pubescent): Clarks Springs, 

 Kreager 70; Pullman, Piper 1757; Elmer 885; Steptoe, Vasey, June, 1900; Walla Walla, 

 Leckenby, May, 1898; Blue Mountains, Horner 492; Kittitas County, Vasey 143; Palouse 

 City, F. D. Cloud, June 22, 1895. 



Zonal distribution: Transition. 



This species is very variable and a critical revision of the genus may show it to consist 

 of several subspecies. The European forms have been much subdivided in a recent paper 

 by Domin. To several of his segregates he refers American specimens. 



ERAGROSTIS. 



Stems creeping; spikelets 10 to 3.5-flowered I.E. hypnoides. 



Stems erect; spikelets 7 to 10-flowered 2. El. luiescens. 



1. Eragrostis hypnoides (Lam.) B. S. P. Prel. Cat. N. Y. 69. 1888. 

 Poa hypmrides ham. Tabl. Encyc. 1: 185. 1791. 



Eragrostis repians Nees, Agrost. Bras. 514. 1829. 

 Type locality: "E.x America merid." 



Range: New England to Washington, south to Florida, Texas, and California. 

 Specimens examined: Kalama, Piper, October, 1901 ; Almota, Piper 1799; Vancouver, 

 Sheldon 11266; Toppenish, Cotton 794. 



Zonal distribution: Humid Transition and Upper Sonoran. 



2. Eragrostis lutescens Scribner, U. S. Dept. Agr. Div. Agrost. Circ. 9: 7. 1899. 

 Type locality: "Sandy banks of Snake River, Almota, Washington." 

 Range: Washington and Idaho. 



Specimens examined: Near Kennewick, ZTZme/' in 1897; Almota, Piper 2624. 

 Zonal distribution : Upper Sonoran. 



