498 POACE^E. 



ElMELICA. 



Spikehts 0-10 mm. lotif/, wiik J-,^ {rarely 1) perfect florets, 

 floral (jl II tiie appareutlij many-nerved bcloiv {at lead when dry), with 

 a broad iiiarf/in sairioiis abiive. 



(J. Culms not hulliiferouti (u) 



e. Empty ^flume.s very uiu'quiil iuul decidedly shorter 



tliiiii the 3-5-llo\veri'(l spikelets (f) 



f. Panicle dilfusely bniiuihed. muny-llowered. ... 7 



f. Panicle narrow, the slender l)raneheH erect. ... 8 

 e. Em[)ty glumes unequal, the second nearly or (piite as 



long as the spikelet (g) 



g. Panicle with 0-15 large i)endulous spikelets, form- 

 ing a simple secund raceme 9 



g. Panicle strict, densely many-flowered above, pedi- 

 cels erect 10 



e. Empty glumes subequal, nearly as long as tlie sj)ike- 



lets (h) 



h. Lignle '2-;} mm. long, lloral glume 5.5 mm. long. . 11. 



h. Ligule ;') mm. long, floral glume !< mm. long. . . VI 



h. Ligule 5-7 mm. long, floral glume G-T mm. long. i;j 



h. Ligule 1-2 i.im. long, floral glume 8-10 mm, long. 14 



D. Culms bulbous, excepting sonui plants of no. 1:5. . . . (i) 

 i. Secoiul glume decidedly shorter than the third, floral 



glume 7-8 mm. long 15 



i. Second glume as long as the third, or nearly us long, (k) 



k. Floral glume (i-T mm. long 16 



k. Floral glume mm. long 17 



BUOMELICA. 



Spihekis of .?--*? perfect florets, the lower exceeding the empty 

 glumes ; floral glume prominently 7-nerved, apiculate or distinctly 

 awned by the excurrent midnerve at the notched or bifid or nar- 

 rowly truncate or rarely long attenuate tip. (Thurber.) 



E. Culms bulbiferous, panicle with spreading, very un- 

 equal few-flowered rays (m) 



