MANUAL OF THE GRASSES OF THE UNITED STATES 



349 



FIGUEE 714. Distribution of 

 Alopecurus aequalis. 



cm long, 4 to 7 mm wide; glumes 3 to 3.5 mm long, ciliate on the keel, 

 appressed-pilose on the lateral nerves; awn at- 

 tached less than 1 mm from the base of lemma, 

 bent, exserted 3 to 5 mm; anthers orange, about 1 

 mm long. o Wet places, Oregon and Cal- 

 ifornia. This species and the following are closely 

 related and may not be distinct. Both have dwarf 

 specimens with small panicles short-exserted or 

 partly included in the inflated upper sheath. 



9. Alopecurus saccatus 

 Vasey. (Fig. 720.) On the 

 average somewhat lower than 

 A. howellii, the upper sheaths 

 inflated, the panicle 2 to 4 cm 

 long, rather less dense, short 

 exserted or partly included; 

 spikelets 4 to 5 mm long, the 

 awn exserted 5 to 8 mm; 



anthers 1 mm long, o Wet places, along the 

 Columbia River, Washington and Oregon, California 

 (Colusa County). 



Alopecurus creticus. Trin. Annual, 10 to 40 

 cm tall; panicle dense; spikelets wedge-shaped, 



FIGURE 713. Alopecurus 4 mm long; glumes firm, the keels broadly winged 

 giXnesand flqrett'x^o! toward the summit, ciliate; lemma truncate, the 

 (Femaid, Maine.) awn f rO m near the base, o 



Ballast, Philadelphia, Pa.; Europe. 



70. POLYPOGON Desf. 



Spikelets 1 -flowered, the pedicel disarticulating 



a short distance below the glumes, leaving a 



short-pointed callus attached; glumes equal, 



entire or 2-lobed, awned from the tip or from 



between the lobes, the awn slender, straight; lemma 

 much shorter than the 

 glumes, hyaline, usually 

 bearing a slender straight 

 awn shorter than the awns 

 of the glumes. Usually de- 

 cumbent annuals or peren- 

 nials with flat scabrous blades 

 and dense, bristly, spikelike 

 panicles. Type species, 



Polypogon monspeliensis. Name from Greek polus, 



much, and pogon, beard, alluding to the bristly 



inflorescence. 



One species, P. monspeliensis, is palatable to 



stock and is sometimes sufficiently abundant on 



low meadows to be of importance in the West. 



Plants annual. 



Glumes slightly lobed, the lobes not ciliate 



1. P. MONSPELIENSIS. 



Glumes prominently lobed, the lobes ciliate-f ringed __ 



2. P. MARITIMUS. 

 Plants perennial. 



Awns rather stiff and straight; glumes 2.5 to 3 mm long 3. P. LUTOSUS. 



Awns delicate, flexuous; glumes 1.5 to 2 mm long 4. P. AUSTRALIS. 



FIGURE 716. Distribution of 

 Alopecurus geniculatus. 



FIGURE 715. Alopecurus 

 geniculatus. Panicle, X 

 1; glumes and floret, X 

 10. (Weatherby 3394, 

 Mass.) 



