142 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Awns shorter than or scarcely exceeding the broad Jemma. 
Awns minute or wanting... 2. ...2202.-2.-.-.-.------- 15. B. brizaeformis. 
Awn well developed. 
Panicle dense, small... .. 2.2... 222.-222-.-2------ 16. B. hordeaceus. 
Panicle loose, open. 
Awn twisted and divarieate.......-.-...----- 17. B. japonicus. 
Awn straight. 
Margins of the lemma inrolled in fruit... _ - 18. B. secalinus. 
Margins of the lemma not inrolled in fruit. 19. B. racemosus. 
1. Bromus subvelutinus Shear, U.S. Dept. Agr. Div. Agrost. Bull. 23 : 52. 1900. 
Type LocaLiry: Reno, Nevada. 
Rance: Washington to Nevada and California. 
SPECIMENS EXAMINED: North Yakima, Hunter 596. 
ZONAL DISTRIBUTION: Upper Sonoran. 
2. Bromus marginatus Nees; Steud. Syn. Pl. Glum. 1: 322. 1854. 
Type Locauity: ‘‘ Douglas legit ad fluv. Columbia, St. Louis.’ This is some undeter- 
mined point on the Columbia River. 
RanGE: British Columbia to Arizona and Colorado. 
SPECIMENS EXAMINED: Fairhaven, Piper 2607; Whidby Island, Gardner 329; Wenache 
Lake, Vasey 103; Wenache, Whited 4; Wenache Mountains, Whited 1359; Skamania 
County, Flett 1391; Klickitat River, Flett 1391; Ellensburg, Whited 440; Union Gap, 
Yakima River, Cotton 448; Tieton River, Cotton 484; Blue Mountains, Piper, 2565, July 
15, 1896; Salmon River, Horner 511; Cold Creek, Cotton 401; Steptoe, Vasey in 1901; 
Walla Walla, Shear 1593; Klickitat County, Suksdorf 174; Yakima, Leckenby in 1898. 
ZONAL DISTRIBUTION: Transition mostly. 
This species has commonly but erroneously been called B. breviaristatus Hook. 
2a. Bromus marginatus seminudus Shear, U.S. Dept. Agr. Div. Agrost. Bull. 23: 
55. 1900. 
_ Type Locauiry: “On open mountain side 5 miles above Wallowa Lake, Oregon.’ 
Collected by Shear. 
Range: Washington to Montana, south to California and Utah. 
SPECIMENS EXAMINED; Olympic Mountains, Piper 1990; Elmer 1956; Montesano, 
Heller 3979. 
ZONAL DISTRIBUTION: Transition and Canadian. 
2b. Bromus marginatus latior Shear, U.S. Dept. Agr. Div. Agrost. Bull. 23: 55. 1900. 
Type Locauity: ‘Walla Walla, Washington.’ Collected by Shear. 
Rance: Washington to Wyoming, south to New Mexico and Arizona. 
SPECIMENS EXAMINED: Olympic Mountains, E/mer 1958; Ellensburg, Piper, July 9, 
1897; Yakima, Leckenby, June 20, 1898; Steptoe, Vasey 23; Pullman, Piper 1738; Walla 
Walla, Shear 1615. . 
ZONAL DISTRIBUTION: Arid Transition. 
3. Bromus sitchensis Trin. in Bong. Mem. Acad. St. Petersb. VI. 2: 173. 1832. 
TYPE LOCALITY: Sitka. 
Rance: Washington to Alaska along the coast. 
SPECIMENS EXAMINED: Olympic Mountains, J. M. Grant, in 1889; Seattle, Piper 3014, 
3013; Puyallup, Piper, September 2, 1899; Cascade Mountains, Lyall, in 1859. 
ZONAL DISTRIBUTION: Humid Transition. 
4. Bromus carinatus Hook. & Arn. Bot. Beech. Voy. 403. 1841. 
Bromus hookerianus minor Scribner; Beal, Grasses N. Am. 2: 614. 1896. 
Tyre Locaity: California. 
RANGE: California to Washington and Idaho. 
