102 53. Megasta. 10. GRAMINE^. Pl.end.ph. 



Dry sandy places and walls ; annual ; June, July. 



Culm many, 1 to 6 in. high, erect, stiff, rather com- 

 pressed, smooth ; leaves slendei', acute, short, often con- 

 volute ; sheatk shining, bluish red ; ligjila short, obtuse, 

 torn ; panicle deep green, or purplish ; peduncle short, alter- 

 nate, 2-rowed ; spaihelles very slender, acute ; spathellules 

 very smooth, outer obsoletely 3 to 5-ribbed. 



(3. m-ariiima. Culm prostrate, thick, stiff j glaucous, small. 



Triticum maritiraum. JViiIf in Jacq. Colled. 3, 34. 



XIII. Bi. POA. Theophrastus. Meadow grass. 



Spathelles alternate, 2 to 20-flowered, shorter than the 

 floscules; glumelles sometimes joined at the base with wool; 

 lower spatkellule awnless; upper 2-cut, toothed; lodicule 

 obtuse, not notched, smooth ; stcanens 2 or 3 ; style short, 

 2-parted ; stigmata villose ; cariopsis free, furrowed ; panicle 

 compound, more or less branchy and effused. 



a. LocustcB very smooth ; spathellules obtuse. 



1. Poa aquatica. IValer meadow-grass. 

 Panicle equal, erect, very large, much branched ; locustcE 



linear, 5 to 9-flowered ; glumelles free at the base, 7-ribbed ; 

 leaves very broad, base spotted ; root creeping. 



Gramen pratense q. Gramen aquaticum majus, Rati Si/n.4l\, 13. 

 Poa aquatica, Lin. S. P. 98. 

 Poa altissiiTia, Moench Mcth, 185. 

 Reed meadow-grass. 



Marshes and banks of rivers ; perennial ; June and July. 



Ciilm thick, smooth, bald, 6 feet high, erect, compressed, 

 2-edged ; leaves cnsiform, smooth ; base having 2 or 3 an- 

 gular spots ; sheaths smooth, bald ; ligiila truncated ; panicle 

 obtuse ; peduncle very long, rough ; glume all white ; lo^ 

 cust(B green and purple. 



^. vivlpara. Flowers viviparous. 



2. Poa onaritima. Sea meadow-grass. 



Pa7iicle equal, branchy, or rather spreading, becoming- 

 contracted; locustce 5 to 12-flowercd, roundish ; Jloiarets 

 distant, obtuse, obsoletely 5-ribbed ; culm ascending ; root 

 creeping. 



Gramen pratense q. Gramen paniculattim marilimum vulgatissimum, 

 Raii Syn. 409, 6. 



Poa arundinacea, i)/o?nc/i i)fe</i. 186, 

 Poa maritima, Hudson Fl. Angl. 42, 



