246 GRAMINE.E. [Poa. 



— Specimens from the Rocky Mountains and from Bear Lake have larger spikelets and broader leaves ; whilst 

 others have more erect spikelets and very narrow leaves : but the structure of the flowers seems to be the 

 same in all. 



10. P. lasca^ Haenke — Host^ Gram. 3. L 15.— P. flexuosa, S?w. E. Bot. t. 1123. 



Hab. Hudson's Bay to the Arctic Islands. Dr Richardson, Drummond. — Many of our specimens so 



entirely agree with the description and figures of the European P. laxa^ that it is impossible not to consider 

 them as identical. 



11. P. arctica, Br. in Parry's \st Voy. App.—Book, in Parry's 2d, 3d, and Ath Voy 



Hook, et Am. in BoL of Beech. Voy, p. 132.— Poa flexuosa, jS. Trin. in Act. Petrop. 6. 1. 

 378 — P. laxa, Br. in Boss' Voy. 2. 192. 



Hab. Labrador. Dr Morrison, Rocky Mountains to the Arctic Sea-shores and Islands in every direc- 

 tion. Br Richardson, Drummond. Sir E. Parry, &c.— Some of my specimens from Kotzebue's Sound 

 are a foot high, others are scarcely 4 inches. I must confess myself frequently at a loss to distinguish P. 

 arctica from P. laxa^ and these again from some forms of P.flexuosa. A viviparous state of P. arctica 

 with greenish flowers is in the collection from the Arctic Sea-coast. 



+ 



12. P. alpina^ L. — E. Bot. t 1003. 



Hae. Labrador. Miss Brenton ; and from the elevated grounds of the Saskatchawan to Bear Lake and 

 the Rocky Mountains. Br llichardson. Brummond.^K most sportive plant in different localities ; varying 

 from 3 inches to 2 feet in height ; with the leaves broader or narrower (sometimes, when dry, rigid, and with 

 margins involute); the panicle erect or spreading ; the spikelets opaque or glossy, broadly ovate and acute to 

 oblong and almost obtuse, and, according to Kunth, with from 4 to 10 florets in each calycine glume : in our 

 specimens, however, even those with the longest spikelets are about 4-flowered. Kunth enumerates 5 varieties 

 of this species, and adduces very many synonyms. 



13. P. pratensis, L.—E. Bot. t. 1073.— (3. stricta ; foliis angustioribus paniculisque 

 strictis. 



Hab. Saskatchawan to Bear Lake. Br Richardson, Brummond, Greenland. i/onie?wann.—/3. has a very 

 different appearance, and may perhaps prove a distinct species. It is from Carlton House Fort. 



14. P. crocata, Mx. Am. l.p. 68.— P. fertilis, Host, Gram. Austr. 3. p. 10. t. 14 P. 



serotina, Gaud, et Auct. Am.— Gray, Gram, et Cyp. Part 11. n, 120, 



Hab. Canada. Mr Whitlaw. {Nuttall), Goldie. Mrs Sheppard, Lake Winipeg to the Rocky Moun- 

 tains . Br Richardson. Brummond.^Oar specimens precisely accord with the figure of Host above quoted. 



15. P. nemoralis. L.—E. Bot. t. 1265. Torr. FL\,p,\\\. Hook, et Am. in Bot. of Beech. 

 Voy, p. 132.— rar. glauca. P. glauca, Sm. E. Bot. t. 1720. 



Hab. Saskatchawan, and plains of the Red River. Brummond. Bouglas, Slave River. Br Richard- 

 son. Rocky Mountains. Brummond,— K% in Europe, so in N. America, this plant seems liable to '^reat 

 variation. From the Rocky Mountains are specimens 2-3 feet high, and stout in proportion, with veiy broad 

 leaves, and flowers larger and more crowded than usual. The same mountains, however, afford what appears 

 to be exactly an intermediate state. 



