—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. laxa, Haenke.— Host, Gram. 8. t. 15.— P . flexuosa, Sm. E. Bot. t. 1123.
H a b . 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 ls£ Voy. App.— Hook, in Parry’s 2d, 3d, and 4th Voy.—
Hook, et Am. in Bot. of Beech. Voy.p. 132.— Poa flexuosa, /3. Trin. in Act. Petrop. 6. 1.
378.— P . laxa, Br. in Boss’ Voy, 2. 192. .
H a b . Labrador. D r Morrison. Rocky Mountains to the Arctic Sea-shores and Islands in every direction.
D r 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.
H a b . Labrador. Miss Rrenton; and from the elevated'grounds of the Saskatchawan to Bear Lake and
the Rocky Mountains. Dr Richardson. Drummond.—A 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.—13. stricta; foliis angustioribus paniculisque
strictis.
H a b . Saskatchawan to Bear Lake. Dr Richardson. Drummond. Greenland. Homemann.—-/S. has a very
different appearance, and may perhaps prove a distinct species. It is from Carlton House Fort.
14. P. crocata, Mx. Am. 1. p. 68.—P . fertilis, Host, Gram. Austr. 3. p. 10. t. 14.— P.
serotina, Gaud, et Auct. Am.— Gray, Gram, et Gyp. Part II. n. 120.
H ab . Canada. Mr Whitlow. (Nuttall). Goldie. Mrs Sheppard. Lake Winipeg to the Rocky Mountains.
Dr Richardson. Drummond.—Our specimens precisely accord with the figure of Host above quoted.
15. P. nemoralis. L.— E. Bot. t. 1265. Torr. Pi. l . p . l l l . Hook, et Am. in Bot. of Beech.
Voy. p. 132.—var. glauca. P . glauca, Sm. E. Bot. t. 1720.
H ab. Saskatchawan, and plains of the Red River. Drummond. Douglas. Slave River. Dr Richardson.
Rocky Mountains. Drummond.—As in Europe, so in N. America, this plant seems liable to great
variation. From the Rocky Mountains are specimens 2-3 feet high, and stout in proportion, with very broad
leaves, and flowers larger and more crowded than usual. The same mountains, however, afford what appears
to be exactly an intermediate state.
16. P. compressa, L .—E. Bot. t. 365.—Ph.— Torr.— Gray, Gram, et Cyp. Part I. n.
59.
H a b . Canada to the Saskatchawan. Dr Richardson. Drummond.
17. P. angustata, Br. in Parry’s ls< Voy. App. p. cclxxxvii and cccix.
H ab. Arctic Sea-coast and adjacent islands. Dr Richardson. Sir E. Parry.
18. P. abbreviata, Br. in Parry’s ls£ Voy. App. p. cclxxxvii and cccix. Hook, et Am.
in Bot. of Beech. Voy. p. 132.
H ab. Melville Islands and Igloolik. Sir E . Parry. Kotzebue’s Sound. Capt. Beechey. Greenland.
Major Sabine.
19. P . glumaris (Trin.); paniculee angustatas densae radiis 2-3 angulato-filiformibus
Iffivibus a basi floriferis, spiculis 2-5-floris pedicello longioribus (glumis flores subasquanti-
bus), perianthiis distinctiuscule nervosis lineari-lanceolatis acutis ad carinam nervosque
marginales villosulis nudisve basi barbatis, ligulis brevissimis vel suprema productiuscula,
radice repente, culmo tereti. Trin. in Act. Petrop. 6. 1. p. 379. Bongard, Veg. Sitcha, p.
55. (et in Herb, nostr.) Kth. Enum. Gram. p. 359.
H ab. Unalaschka, Kotzebue’s Sound. (^Trinius.') Sitcha. Mertens.—A large and very distinct species.
20. P . fulva (Trin.); paniculee (foliis brevioribus) patulee radiis subquaternis sub-
angulato-filiformibus leevibus inferne nudis, spiculis (subacerosis) 4-6-floris pedicellis
submquilongis vel longioribus, perianthiis obsolete nervosis lanceolato-ellipticis obtusius-
culis nudis basi vix barbatis, ligulis productis, radice repente. Trin. in Act. Petrop. 6. 1.
378. Kth. Enum. p. 359.
H ab. Bay of Eschscholtz, Kotzebue’s Sound. ( Trinius.)
21. P. stenantha (Trin.); paniculae contractiuscuke radiis binis (v. pseudo-ternis)
solitariisque filiformibus scabriusculis leevibusve inferne nudis, spiculis 2-5-floris pedicellis
asquilongis longioribusve, perianthiis obsolete nervosis lanceolato-linearibus acutiusculis
ad carinam villosulis inferne pilosiusculis basi subbarbulatis, ligulis productis, radice
fibrosa. Trin. in Act. Petrop. 6. t. 376. Bongard, Veg. Sitcha, p. 54. Kth. Enum. p. 358.
H ab. Sitcha. Mertens. Grassy slopes near the summit of Mount Rainier. N. W. Am. Tolmie.—A
very distinct species of Poa, viviparous in the original specimen I have received from the Imperial Herbarium
of St Petersburg.
22. P. leptocoma (Trin.); paniculse patentis ssepissime flaccidse pauciflorte radiis binis
subcapillaceo-filiformibus laevissimis superne floriferis, spiculis subtrifloris pedicello sub-
aequilongis vel longioribus, perianthiis subobsolete nervosis lineari-lanceolatis acutiusculis
cvel carinam villosulis basi contortuplicato-lanatis, ligulis productis, radice fibrosa. Trin.
in Act. Petrop. 6. 1. 374. Bongard, Veg. Sitcha, p, 54.
H ab . Sitcha. Bongard.