HOW TO KNOW THE GRASSES 



82b. Ligule about 1 mm. long; awn 3 — 5 mm. long: plants widespread. 

 Fig. 117. 



Bromus ciliatus L. 



Perennial; tufted; plants 70 — 120 cm. tall; pani- 

 cles 15 — 25 cm. long, drooping. Leaf sheaths glab- 

 rous or somewhat hairy; blades smooth or hairy, 

 up to 1 cm. wide. This species has handsome 

 fringed spikelets. It is one of the most widespread 

 of the native woodland bromes in moist rocky or 

 alluvial woods. It provides excellent forage in the 

 western states. July — August. 



Figure 1 17 



83a. Culms with 3 — 7 nodes; sheaths without auricles. Fig. 118. 



Bromus purgans L. 



Perennial; tufted, in small clumps; culms erect or 

 leaning; plants usually 60 — 150 cm. tall; panicles open, 

 drooping, usually 15 — 20 cm. long; leaf sheaths short- 

 er than the internodes, hairy or rarely glabrous; leaf 

 blades 5 — 17 mm. wide; lemmas rather uniformly hairy 

 across the back. This is the commonest woodland 

 brome in the eastern United States. It is to be found 

 in nearly every moist woods. June — July. 



Forma glabriilorus Wiegand is a form of this spe- 

 cies which has glabrous lemmas. It may be dis- 

 tinguished from other similar woodland bromes by 

 the anthers, which are 3 — 4.5 mm. long. 



Figure 1 1 8 



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