96 CONTBIBUTIONS FROM THE NATIONAL HEEBARIUM. 



Sheaths glabrous. 



Spikelets laterally compressed, ovate-lanceolate... 6. B. secalinus. 



Spikelets terete, narrowly oblong 7. B. inermis. 



Lemmas more or less pubescent. 



Pubescence unevenly distributed on the margins and 



dorsal surface of the lemmas 8. B. richardsoni. 



Pubescence about equally distributed on margins and 

 dorsal surface of the lemmas. 



Sheaths densely villous 9. B. lanatipes. 



Sheaths glabrous or nearly so. 



Glumes pubescent; tall coarse plant 10. B. porteri. 



Glumes glabrous; weak leafy plant 11. B.frondosus. 



la. Bromus marginatus latior Shear, U. S. Dept. Agr. Div. Agrost. Bull. 23: 

 55. 1900. 



Type locality: Walla Walla, Washington. 



Range: AVashington and Wyoming to Arizona and New Mexico. 



New Mexico: North of Ramah; Santa Fe; East Fork of the Gila; Mangas Springs. 

 Canyons, in the Upper Sonoran and Transition zones. 



lb. Bromus marginatus seminudus Shear, U. S. Dept. Agr. Div. Agrost. Bull. 

 23:55. 1900. 



Type locality: On open mountain side 5 miles above Wallowa Lake, Oregon. 



Range: Washington and Montana to California and New Mexico. 



New Mexico: Baldy; Sandia Mountains; Water Canyon; James Canyon; White 

 Mountains. Meadows, in the Transition Zone. 



2. Bromus unioloides (Willd.) H. B. K. Nov. Gen. & Sp. 1: 151. 1816. 

 Festuca unioloides Willd. Hort. Berol. 1: 3. pi. 3. 1816. 



Type locality: "Habitat in Carolina." 



Range: South Carolina and Florida to Texas, also in Mexico and South America; 

 introduced in other parts of the United States. 



New Mexico: Mangas Springs; Agricultural College. 



3. Bromus polyanthus Shear, U. S. Dept. Agr. Div. Agrost. Bull. 23: 56. /. 34- 



1900. 

 Bromus viultiflorus Scribn. U. S. Dept. Agr. Div. Agrost. Bull. 13: 46. 1898, not 



Weig. 1772. 

 Type locality: Battle Lake, Sierra Madre Mountains, Wyoming. 

 Range: Oregon and Montana to Utah and New Mexico. 



New Mexico: Harveys Upper Ranch; Santa Fe; Johnsons Mesa; Rio Pueblo; 

 Barranca; Cliama; Tunitcha Mountains; Las Vegas; Silver City; Patterson; James 

 Canyon; Organ Mountains. Shaded canyons, in the Transition Zone. 



3a. Bromus polyanthus paniculatus Sheax, U. S. Dept. Agr. Div. Agrost. Bull. 

 23:56./. 35. 1900. 



Type locality: West Mancos Canyon, Colorado. 



Range: Utah and Colorado to Arizona and New Mexico. 



New Mexico: Pecos; Glorieta; Baldy; Inscription Rock; Chiz; Mogollon Moun- 

 tains; Gilmores Ranch; James Canyon; Gray. Damp woods and thickets, in the 

 Transition Zone. 



4. Bromus hordeaceus glabrescens (Coss.) Shear, U. S. Dept. Agr. Div. Agrost. 



Bull. 23: 20. 1900. 

 Bromus mollis glabrescens Coss. Fl. Env. Paris 654. 1845. 

 Type locality: Paris, France. 



Range: Native of Europe, widely introdticed in the United States, 

 New Mexico: Willow Creek (Ifoo to ?i), 



