1 18 TRIANDRIA— DIGYNIA. Glyceria. 



a more ample account may be seen in the FL Londinensis. They 

 are said to be very sweet, especially before they arrive at matu- 

 rity 3 whence the name of Manna grass, which, no doubt, sug- 

 gested to Mr. Brown the generic name. The fine sharp bran is 

 said to kill intestinal worms in horses. 

 The Jlowers, like those of Aira aquatica, have a sweet taste. The 

 nectary is really a secretory gland. 



3. G. distans. Reflexed Sweet-grass. 



Panicle branched, spreading ; the branches finally reflexed. 

 Florets about five, obtuse, obscurely five-ribbed, polished. 

 Root fibrous. 



Poa distans. Linn. Mant. 32. WiM.v. 1.401. Fl.Br.96. Engl. 

 Bot.v.\4.t.9S6. With.\4\.t.2h. Knappt.47. Hook. Scot.33. 

 Schrad. Germ. v. 1. 282. Host Gram. v. 2. 46. t. 63. 



P. retroflexa. Curt. Lond.fasc. 6. t. 10. 



P. salina. Pollich Palat. v. 1. 89. 



Aira aquatica /3. Huds. 34. 



On sandy waste ground towards the sea, in many parts of England 

 and Scotland. Curtis noticed it on Hampstead hill. 



Perennial. July, August. 



Root fibrous, not creeping. Stems several, a foot high, round, 

 leafy 3 decumbent at the base. Whole plant slightly glaucous, 

 smooth. Leaves tapering to a sharp point. Stipula rather short, 

 obtuse, notched ; that of the upper leaves often pointed. Panicle 

 erect, with several series of half-whorled, angular, slender, rough 

 branches, rigidly bent downward in a very remarkable manner. 

 Spikelets linear, while young somewhat elliptical, variegated 

 with purple. Florets smooth and shining, rarely more than 5, 

 slightly distant. Outer valve of the corolla quite cylindrical, 

 without any keel, but marked with 5 blunt, more or less evi- 

 dent, ribs, which are commonly purple, and the interstices glau- 

 cous j the point is abrupt and membranous j inner valve slightly 

 notched. Nectary deeply cloven. Styles short. Stigmas large 

 and densely feathery; according to Mr. Curtis "branched." 



4. G. maritima. Creeping Sea Sweet-grass. 



Panicle branched, rather close ; erect after flowering. Flo- 

 rets about five, somewhat pointed, slightly five-ribbed. 

 Root creeping. 



Poa maritima. Huds. 42. mild. Sp. PI. v. 1 . 396. Fl. Br. 97. 



Engl. Bot. v. 16. t. 1 140. Knapp t.46. Dicks. H. Sice. fasc. 



1 1 .°2. Hook. Scot. 33. Schrad. Germ. v. 1 . 281 . Roth Beitr. 

 fasc. 1. 6. Fl.Dan.t.2b\. 

 Gramen paniculatum maritimum vulgatissimum. Raii Sijn. 409. 

 G. caninum maritimum paniculatum. lb. 410. 



