28 



Speci.mexs examined. — Massachusetts (ex herb. W. P. Alcott in 1880). New York: 

 Ithaca (W. R. Dudley in 1884). Delaware: Wihiiington (A. Commons 339 in 

 1898). Montana: (F. Lamson-Scribner 97 in 1883). Idaho: Lewiston (A. A. & 

 E. G. Heller 3203 in 1896; L. F. Henderson 4635 in 1894); Viola (Sandberg, 

 Heller & McDougal 482 in 1892); Coeur d'Alene Mountains (J. B. Leiberg 1006 

 in 1895). Utah: Echo (P. A. Rydberg2353 in 1895) ; Salt Lake City (L. H. Pam- 

 mel 197 in 1899). Nevada: Reno (S. M. Tracy 194 in 1887). Washington: 

 Waitsburg ( R. M. Horner 563 in 1897) ; Pullman ( A. D. E. Elmer 371 in 1896; 876 

 in 1897) ; Wawawai (C. V. Piper 1739 in 1894) . Oregon : Prineville (J. B. Leiberg 

 308 in 1894). California: Near Mount Shasta (Dr. E. Palmer 2647 in 1892). 



8. BROMTJS SCOPARITJS L. 



Cent. PI. 1:6. 1755. Serraf al- 

 ms scoparius Pari. Fl. Pal. 1 : 174. 



1845. (Fig. 8.) 



An annual with rather slender, 



smooth, nearly erect culms 



about 2-3 dm. high. Sheaths 



sparsely pilose or nearly smooth; 



ligule about 1 mm. long, lacini- 



ate-dentate; blades linear, 6-12 



cm. long, mostly pilose above 



and smooth beneath. Panicle 



dense, oblong or ovate, obtuse, erect, 



3-6 cm. long, 1-3 an. broad; 



branches very short. Spikelets 



very short-pedicellate, oblong- 

 lanceolate, 5-11-flowered, 10-18 



mm. long; empty glumes gla- 

 brous or slightly scabrous on the 



nerves, the lower acute, 1-3- 



nerved, 4-5 mm. long, the upper 



3-nerved, broader, 5-6 mm. 



long; flowering glume 7-8 mm. 



long, 5-nerved, varying from 



typically smooth to sometimes 



scabrous - pubescent, bidentate 



at the membranous apex; aivn 



twisted, divaricate, 7-8 mm. long 



inserted 1.5-2 mm. below the apex; 



palea about 1 mm. shorter than 



its glume with the keels re- 

 motely ciliate-pectinate. 

 Type from Spain. 



Indigenous in the Mediterranean region of Europe and Africa, adventive 



fornia. 

 We have only one specimen in the herbarium, collected by J. W. Congdon, 

 posa, California. 



II. NEOBROMUS n. subgen. 



Fig. 7. — Bromus brizxformis : a, a spikelet; 6, 

 glumes; c, flowering glume; d, palea, 



empty 



in Cali- 

 at Mari- 



Floivering glumes lanceolate, deeply bifid; awn twisted and bent below the middle. 

 The following species is the type of this subgenus: 



9. BROMTJS TRINII Desv. in Gay Fl. Chil. 6: 441. 1853. Trisetum hirtum Trin. 

 Linueea, 10: 300. 1835. '^otB.hirtusLichtst 1817. Trisetum barbatumStend. 



