No. 69. 



PLEUROPOGON REFRACTUM Vasey; Lophochlana refracta dray, 



I'loc. Aiiicr. Acad. viii. 400 (ISTl'). 



ri(in1 pcroniiial, tufted, from a stronj;, croei)!!)!? lootstock. 



Citlmx iTi'ct, simple, smooth, leafy to the panicle, 2 to 4 feet tall. 



Leaves of culm 3 or 4; sheaths nearly smooth, striate, open .at the throat, ecpial- 

 injr or sliglitly exceeding the hmg internodes; blade Hat or folded, scalirid above, 

 abrui)tly iwiuted, li to 4 lines wide, lower ones to 10 inches long, uppermost 1 to li 

 inches long; ligule tnincate, 1 to 2 lines long. 



Injiorrmrncf an erect, simide, secund panicle of fi to 10 spikelets ])eiideHt on slen- 

 der, recurved pedicels 1 to -! lines long at intervals of 1 to ;5 inches on the slender, 

 tlexuoiis axis. 



Spikilrt.s linear-oblong, S- to 12-flowcred, a#)out 1 inch long; empty glumes lance- 

 oblong, obtuse, or eitiarginate, often denticulate, tliin, smooth, l-nerve<l, 2 to 2i lines 

 long, the second s^lightly longer; Horal glume lance-iil)l()iig, erose, or dentate at the 

 rather truncate, inembi-anaceous summit, nearly smooth, j)r()niinently 7- to 0-nerved, 

 3i t^> 4 lines long; awn arising at- the apex, 2 to 4 lines long; palet linear, ennirgiuate, 

 the margins HatJy infolded, with a rather obtuse wing midway on the back of each 

 keel, few if any teeth above, A line shorter than the glume: stamens ."; ovary smooth, 

 with 2 stignnis plumose near the ends; grain oblong, dark brown, 2 lines long. 



Plate LXIX; «, spikelet; h, floret opened ; c, floral glume, dorsal view. 



Oregon and" Washington, in cold, damp bogs and along mountain streams. This 

 may be distinguished from the (jreceding species by it« more robust habit, pendent or 

 rcrtexed spikelets, and blunt wings on the palet^ 



