028 POAC'E.E. 



glumes linear, obtuse, S-ncrved, first 4 mm. long, second about 

 5 mm. long; floral gluiiie about (i mm. long; palea G.5 mm. long, 

 spatulatc-linear before s[)roatliiig, rovolutc. 



]\[exico, I'l-imjlc ;>5-3.5 in 1889. 



^loist banks near Moiiteroy. 



'2. B. Mexicana (IJ. «!t S.) Link, Ilort. Berol. 1:41 (1827). 

 Fvxtvm Me.rinnia \{. Ik S. Sy.st. 3:733 (1817). F. srahm 

 Lag. (jen. et Sf). Nov. 4 (181()). 



A slender brandling perennial, 30-30 cm. high, with a few root- 

 stocks. Culms slender, nodes smooth. Sheaths shorter than the 

 internodes; ligule about 0.5 mm. long; blades mostly Hat, seabrid, 

 pungent-pointed, 3-4 cm. long, 1.5-3.5 mm. wide, tapering 

 towards the base. Spikes bearing 1-3 erect linear-lanceolate spike- 

 lets, 3-G-flowered, 1.5-3 cm. long; empty glumes ovate-lanceo- 

 late, abruptly pointed, first 5-nervcd, 5-G mm. long, second 7-9- 

 nerved, 7-8 mm. long: floral glume elliptical, 7-nerved, 8 mm, 

 long, the terminal awn 3-4 mm. long. 



Mexico, Pringle 4331. 



Triije XIL— HORDEiE. 



Spikelets 1-many-flowcred, sessile in the alternate notches oi 

 the rachis of a simple spike, rachilla usually i)roduced beyond the 

 upi)er floret. 



i;5('.. (205). LOLIUM L. Sp. PI. 83 (1753). CnrpaUa Schrank, 

 I'.aier. Fl. 1:103. 382 (1789). Cn/j)f/iri(s Link, Limuva. 17:387 

 (1843). Ai-throrhortus Lowe, Hook. Kew. Journ. 8:301 (1850). 



S[)ikelets several-flowered, sessile, single (or al)normally branch- 

 ing) at each joint of the single S2)ike, distichous, compressed, turn- 

 ing one edge (or the backs of one row of glumes) to the rachis; 

 I'achilla articulate between the florets, which are jierfect, or the 

 upj)er one imperfect. fJlumes firm, 5-7-nerved, round on the 

 l)ack, not keeled, obtuse, acute, acumiiuite or the Tii;rves above ex- 

 tending into an awn; the lower glume of the lateral spikelets and 

 the 3 lower glumes of the terminal spikelets empty; palea shortei 

 than the floral glume, narrow, 2-keeled. Stamens three. Styles 



