548 



CVII. GKAMINE^. 



[Po 



oa. 



drical, Witt 3 or more (rarely 2) fertile florets. Glumes 2 

 more or less membranaceous and unequal, shorter than the 

 florets. Glumellas 2 ; outer one subovate, bluntish, rarely 

 tipped with a minute point. Fruit free. — Name, Troa, grass 

 or pasturage^ from Traw, to feed; the whole genus aflbrdino- an 

 abundant pasturage for cattle. 



r 



^ 



* Spikelets linear or suhcylindrical (^rarely ovate, with the glumes l-nerved) 



Florets rounded on the hack at the base. 



m J 



i 



f Outer glumella with 7 prominent ribs and a scarious marginy neither 



hairy on the ribs, nor webbed at the base, subcylindrical^ obtuse^ 

 Glumes l-nerved, conspicuously unequal, Glyceria. 



1. P. aqudticaLi. (Reed Meadow grass) ; panicle erect very 

 much branched, spikelets linear of about 5 — 10 obtuse florets 

 .which have 7 ribs. E. B. 1. 1315 : Parn. Gr. t. 44. Glyceria>S'7rt. 



Sides of rivers, ponds, and ditches, %. 7, 8 Root ereepinfr. 



Culm 4 — 6 ft, high, erect. Leaves linear-lanceolate, rough. Liqule 

 short, obtuse. Glumes small, ovate, obtuse, membranaceous, smooth- 

 ish. Outer glumellas twice as large as the glumes; inner narrower 

 and bifid at the point. 



2. T. Jluitaris Scop, {floating Meadow- grass) \ panicle nearly 

 erect slightly branched, spikelets linear appressed of from 7 to 

 20 obtuse or slightly acute florets which have seven ribs with 

 short intermediate ones at the base, leaves folded at the midrib, 

 root creeping. — a. sheaths of leaves smooth or striate, florets 

 somewhat acute, inner glumella about as long as or projecting 

 beyond the outer one, anther 5 times longer than broad. 

 Parn. Gr. t. 95. Festuca i. Glyceria B7\—(3, sheaths of 

 leaves sulcate, florets obtuse, inner glumella shorter than the 

 outer one, anther 2—4 times longer than broad. Poa E. B. 

 t. 1520: Parn. Gr. t. 45. Glyceria Sm, G. plicata\Fm5. G. 



Nat 



Sometimes 



Ditches and stagnant waters, abundant. 1/.. 7, 8. — . 

 confounded with Festuca prate nsis j8., but distinguished by the 1 -nerved 

 glumes and 7-rIbbed glumellas.— Culms 1—3 ft. high, thick and 

 succulent. Leaves linear-lanceolate, acute, folded at the keel Sheathe 

 compressed. Ligule oblong, pointed. Panicle with the branches ap- 

 pressed or divaricate, nearly simple or again branched. Glumes un- 

 equal, small, ovate, membranaceous, obtuse. Glumellas ovate-obiong, 

 sometimes thrice as long as the glumes, but variable in that respect; 

 outer one scabrous, obtuse or slightly acute, sometimes toothed. The 

 ^cale is of 1 thick fleshy piece, which is the principal character of Mr. 

 Brown's genus Glyceria. It is found In New Holland. — We cannot 

 perceive any characters besides those now adopted, to distinguish this 

 variable species into varieties: there are, however, two forms of )3. ; 

 one with the branches of the panicle divaricate in fruit, the rachis 

 more or less rough, and small spikelets (the outer glumellas scarcely 



