104 TRIANDRIA— DIGYNIA. Aira. 



Bot. The partial stalk, elevating one Jloret, is very short, quite 

 smooth, not downy. Awn short, from above the middle of the 

 outer valve of eachjloret, and overtopping its cloven point. 

 I readily concur with the ingenious Dr. Wahlenberg, in taking this 

 for the real A. alp'ina of LinuEeus, though the Lapland specimen 

 in his herbarium is unnamed. Of Wahlenberg's A. atropurpurea, 

 Vahl's alpina, R. Dan. i. 961, there is no specimen at all ; nor 

 does Linnseus seem to have known this species, which is very 

 different from our alpina, the panicle being more like Jiexuosa. 

 Scheuchzer's synonym, Agr. 222, cannot, without the inspection 

 of a specimen, be safely referred to either. 



5. A, Jiexuosa. Wavy Mountain Hair-grass. 



Panicle spreading, triple-forked, with wavy branches. Flo- 

 rets about the length of the calyx, acute. Awn from the 

 middle of the outer valve, longer than the calyx, twisted. 

 Leaves bristle-shaped. 



A. flexuosa. Linn. Sp. PL 96. Willd. v. 1 . 3/8. Fl. Br. 85. Engl. 

 Bot. L\ 22. ^. 15 1 9. Knapp f.3\. Hook. Scot. 30. Schrad. Germ. 

 V. 1.259. Leers23. t.5.f. 1. Host Gram.v. 2. 32. t. 43. Schr^h. 

 Gram. V. 2. D7.t. 30. FL. Dan. t.\b7 . Ehrh. Calam.81 . 



Avena n. 1486. Hall. Hist. v. 2. 229. 



Gramen paniculatum, locustis parvis purpuro-argenteis, majus et 

 perenne. Raii Sijn. 407. 



G. avenaceurn paniculatum alpinum, foliis capillaceis brevibus, lo- 

 custis purpureo-argenteis splendentibus et aristatis. Scheuchz. 

 Agr. 216. t. 4.f. 1 6, A B C. Prodr. 23 t. 4. 



/3. Aira montana. Hiids. 35. Dicks. H. Sice. fasc. 18.4. Leers 24. 



t.5.f. 2; but not of LinncEus, 

 A. scabro-setacea. Knapp t. 32. 

 A. setacea. Huds. ed. 1 . 30. 

 y. Gramen alpinum nemorosum paniculatum, foliis angustissimis, 



locustis splendentibus aristatis. Scheuchz. Agr. 2\S. 

 G. nemorosum, paniculis albis, capillaceo folio. Bauh. Prodr. 14. 



Theatr. 97. Scheuchz. Prodr. 24. t. 6. Dill, in Raii Sijn. 407. 



Moris. V. 3. 200. sect. 8. t. 7.f. the last. 



In heathy, sandy, rather mountainous places, y in shady groves. 



Perennial. July. 



Root of many long and strong fibres, woolly in sandy ground. Stem 

 12 or 18 inches high, erect, slender, smooth, leafy at the base ; 

 naked above. LeateAsliort, slender, truely awl-shaped, or bristle- 

 shaped ; in 3 and y they are much longer, capillary, more co- 

 pious, somewhat glaucous, and roughish, reaching a good way 

 up the stem. Panicle loose, 'erect, divided in a threefold man- 

 ner, that is, with only opposite branches ; the branches and 

 stalks very slender, wavy or zigzag, angular, roughish ; in /3 

 and y less wavy and less regularly tcrnatc. Glumes of a .shining 



