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 pennsylvanica (DC.) Gray, Man. ed. 2. 558. 1856. 
Koeleria pennsylvanica DC. Cat. Hort. Monsp. 117. 1813. 
Type Locaity: ‘“ Penn.” 
Rance: 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 Li. Sp. Pl. 1: 63. 1753. 
Tyre Locauity: ‘Habitat in Angliae, Galliae, Helvetiae siccioribus.” 
Rance: British Columbia to Athabasca, southward to Arizona, Kansas, and Pennsylvania. 
_ SPECIMENS EXAMINED: Olympic Mountains, Elmer 1668; Alki Point, Piper, June, 1891; 
Fidalgo Island, Lyall 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 1411; west Klickitat County, Suksdorf 1110 (a very pubes- 
cent form); Spokane, Piper 2723; Spokane, Kreager 1 (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 35-flowered .........-.----------+---- 1. EF. hypnoides. 
Stems erect; spikelets 7 to 10-flowered............-.-.--------------- 2. E. lutescens. 
1. Eragrostis hypnoides (Lam.) B.S. P. Prel. Cat. N. Y. 69. 1888. 
Poa hypnoides Lam. Tabl. Encye. 1: 185. 1791. 
Eragrostis reptans Nees, Agrost. Bras. 514. 1829. 
Type Locatiry: ‘Ex America merid.” 
Rance: 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. Cire. 9: 7. 1899. 
Type Locaity: “Sandy banks of Snake River, Almota, Washington.” 
Ranace: Washington and Idaho, 
SPECIMENS EXAMINED: Near Kennewick, /lmer in 1897; Almota, Piper 2624. 
ZONAL DISTRIBUTION: Upper Sonoran. 
