358 GRASS FAMILY 



Stems 1-2 ft. high; spikes 1.5-4 in. long, mostly single; 



spikelets 1.5-2 mm. long P.setdceum 



PHALARIS Linne 1753 CANARY GRASS 

 (Gr. phalos, shining, from the grain) 



PL 46, fig. 29. 



Spikelets 1-flowered, in spikes or spike-like panicles; glumes 2; sterile 

 lemmas 2, tiny or reduced to silky awns ; lemma pointed, hairy, palet sim- 

 ilar ; annual or perennial. 



1. Spikelets in a spike-like panicle; glumes not 



winged P. arundinacea 



2. Spikelets in an ovoid to cylindric spike ; glumes 



broadly winged 



a. Spike ovoid to oblong, .5-1.5 in. long; spikelet 



6-8 mm. long; sterile lemmas small scales P. canariensis 



b. Spike cylindric, 1-4 in. long; spikelets 5 mm. 



long ; sterile lemmas hairy-awned P. carolinidna 



PHIPPSIA Trinius 1821 

 (Named for Phipps, an Arctic explorer) 



Spikelets 1-flowered, in small panicles ; glumes tiny, the lower often 

 wanting; lemma keeled, palet somewhat shorter, f ringed-toothed, 2-keeled, 

 stamen usually 1 ; tufted alpine perennial. 

 Stems 1-4 in. high; panicles .5-3.5 cm. long; spikelets 



1-1.5 mm. long P.dlgida 



PHLEUM Linne 1753 TIMOTHY 

 (The Greek name of a plant) 



PI. 46, fig. 23. 



Spikelets 1-flowered, in spikes ; glumes 2, flattened, keeled, mid-nerve 

 produced into an awn ; lemma much shorter, broad, toothed at tip, palet nar- 

 row ; annual or perennial. 



1. Spike cylindric, 1.5-8 in. long, 5-8 mm. wide; 



stems 2-5 ft. tall P. pratense 



2. Spike ovoid to oblong, .5-2 in. long, 6-12 mm. 



wide; stems .5-1.5 ft. high P.alpinum 



PHRAGMITES Trinius 1820 REED GRASS 

 (Gr. phragma, hedge, from its dense growth) 



Spikelets 3-several-flowered, in panicles, first flower often staminate, 

 axis jointed between the lemmas, long-hairy; glumes unequal, lanceolate, 

 acute, shorter than the spikelet; sterile lemma sometimes with a staminate 



