349 



Alton, Idaho, June and July, 1892, No. 25. 



Ballard, Swan Lake, Minn., June, 1892. 



Brewer & Chickering, Geneva, N. Y., June 19, 1858. 



Dr. Geo. Vasey recognized this plant as distinct from Glyceria 

 fluitans, giving it the varietal name of angiistaia, but I cannot find 

 that it was ever published. The G. angustata T. Fries would, 

 however, invalidate its use in this connection. 



Panicularia brachyphylla n. sp. 



Whole plant, except the flowering scales and a slight roughness 

 on the branches of the panicle just below each spikelet, smooth 

 and glabrous. Culms simple, from a decumbent and creeping 

 base, erect, slender, 6-9 dm. tall ; sheaths usually longer than the 

 internodes, closed for nearly the entire length, striate, the upper- 

 most one elongated, somewhat keeled toward the summit, loosely 

 embracing the culm, and enclosing the base of the panicle ; ligule 

 6-9 mm. long, lacerated at the apex ; leaves linear, acuminate at 

 the apex, 6-13 cm. long, 4-5 mm. wide, inclined to become con- 

 duplicate, especially when dry ; panicle narrow and slender, the ex- 

 serted portion 3-4 dm. long, the lower internodes of the rachis 5-7 

 cm. long, gradually decreasing in length to the summit, where they 

 are i-2 cm. in length, the branches appressed, or nearly so, the 

 lower ones in 2's or 3's, one of which is 6-1 1 cm. long and bears 

 2-3 spikelets, the remaining one or two being much shorter and 

 bearing a single spikelet ; spikelets 2.2-3 cm. long, compressed- 

 cylindric, 7-i2-(usually 8-10) flowered, on pedicels 1-2 mm. long; 

 empty scales of the spikelet i -nerved, acutish, with a broad white 

 margin, the fir.st scale about one-half as long as the second, which 

 is 5-6 mm. in length, the flowering scales hispidulous, 7-nerved, the 

 lower ones a little exceeding twice the length of the internodes of 

 the rachilla, about 5.5 mm. long, 2.5 mm, wide when spread out, 

 elliptic, the obtuse, not truncate, apex somewhat obscurely and ir- 

 regularly few-toothed ; palets about 6 mm long, a little exceeding 

 the flowering scales, acuminate, the margins infolded, the apex 

 shortly 2-toothed, 2-nerved, the nerves wing-keeled, the wing ser- 

 rulate and about .3 mm. wide in the broadest part ; anthers purple, 

 1.5-1.7 mm. long. 



Growing in water in large masses in an open swamp near the 



N. Y. & Harlem R. R., just north of the northern line of the 



grounds of the New York Botanical Garden, in company with 



P. fluitans, from which it is markedly different, the shorter and 



more slender culms, the shorter leaves, and the much narrower 



panicle readily distinguishing it; in addition to these differences, 



the flowering scales in P.fluitans are shorter (about 4 mm. long). 



