58 



the nodes ; internodes generally 3 to 4. Sheaths usually equaling or exceeding 

 the internodes, coarsely striate, usually sparsely retrorsely pilose ; ligule 4-5 mm. 

 long, subrotund above, somewhat laciniate ; blades mostly 20-35 cm. long, usually 

 sparsely pilose on both sides. Panicle, 12-20 cm. long; lower branches i-:?, bear- 

 ing 1-3 Kpikelets someirltat nodding, becoming more or less rigid and erect when 

 old. Spikelets oblong-lanceolate, compressed, 2.5-3.5 cm. long, 7-9 nun. broail, 

 3-6-fiowered ; empty glumes broad, subequal, the lower distinctly 3-nerved, sulj- 

 acute, upper distinctly 5 or obscurely 7 nerved, obtuse, 10-13 mm. long, usually 

 scabrous, especially on the nerves; flowering gltniir broadly lanceolate distiudlg 



7-nemed, with a br<jad 

 membranous margin, 

 smooth to scabrous- 

 pubescent, averaging about 

 15 mm. long, bidentate at 

 the apex, awned ; awn 

 stout, scabrous, mostly 

 9-11 mm. long; palea 

 nearly equaling its glume, 

 acute, ciliate-pectinate on 

 the keels. Pachilla thin- 

 ly pubescent, about 3 

 mm. long. 



General distribution: Atka 

 and Unalaska. 



Type in Herb. Le<lebour from 

 Unalaska, collectetl by 

 Eschscholtz. 



Specimens examined. — I'na- 

 htska ( W. H. Evans 550 in 

 1897; Dr. A. Kellogg 142 

 in 1867; S. Applegate, no 

 number or date; M. W. 

 Harrington in 1871-72). 

 AtJ:a (L. M. Turner 1194 

 in 1880). 



This species is very closely 

 related to B. marginatus. 

 The <jriginal description 

 says "spikes glabrous," 

 ])ut we have amended it 

 to include forms having 

 scabrous-pubescent flow- 

 ering glumes. Such 

 forms coming from St. 

 Petersburg Herb, and 

 evidently determined by Trinius are in the Gray Herb. We have seen no speci- 

 mens witli i^erfectly glabrous spikelets. 



34. BROMUS SITCHENSIS Bong. Obs. Veg. Sitch. 173. 1831. (Fig. 36.) 



A tall, stout, leafy perennial. Culm smooth, nearly erect, 12-18 dm. high. Sheaths 

 shorter than the internodes, .^mootli; ligule large, rounded entire or somewhat 

 torn, 3-5 nun. long; hVddes linear-lunceolate, 2-4 dm. long, 1-lJ mm. broad, ajxir.sely 



Fig. 3G. — Brojiniii fitchaiyis: «, empty {,lLmvs with two florets 

 showing the palese; 6, dorsal view of a flowering glume. 



