H»b. Plains of the Saskatchawan. Drummond.—R , Asa Gray has given the following amended character
ol this species: P. culmo caispitoso simplici (spitham. et ultr.), foliis linearibus rigido-erectis pungeniibus
panicula simpliciuscula pauciflora, ramis ercctis subpatulisve, spiculis (magnis) acuminatis glabris, gluma inferiore
flosculis qnadruplo breviore neutro bivalvi paulo minore." 1 snperiore eosdem subeacedente 7-nervi, ,h ermaphrodite obtuso °glabro
?■ P. viscidim. Ell. Fl. t. 123. Kth. Agr. Syn. p. 107.
H»b. Dry grounds of the Columbia, about Port Vancouver. Douglas.— The specimens entirely accord
with those in my Herbarium, from Mr Nuttall and Dr Torrey, gathered in New Jersey.
8. P, capittare. L.— Mx.— Ph Tan. FI. p. 149.
H a s . Saskatchawan. Dr Richardson. Drummond. Columbia. Douglas.
10. OPLISMENUS. Kth.
Ph1. . O. Crus-Gcdli. Kth.— Pan icum , L.—E. Bot. p. 876. Ton.- FI. v 140 M x __
theH Satbra. itCs aonfa Ddae. FMucras, SNh.e pWpa. rAd.m erMicaar. shDyo uggrolausn.d along the sea-shore, from “ Cape Disappointment,” to
2. O. muricatus:Kth. Gram. 1.1.44— P an icum . U x.—V. hispidum . Muhl Torr. FI.
p. 141. Gray, Gram, et Cyp. Part I. n. 26.— P . C rus-G alli, (3. hispidum . Ell.—P .
W a lte ri. Ph.
H a b . Canada. Pursh.
H SETARIA. Beauv.
Au1st. r.S .2g.l pa.u c1a6.. Beauv.—Torr. Fl. 1. p. 162__ Panicum , L __Mx. Ph__Host, Gram.
H ab. Saskatchawan. Dr Richardson. Drummond.
IV. Stipaceæ. Kth.
12. ORYZOPSIS. Richard.
1. O. asperifolia. Bich. in Mx. Fl. 1. p. 61. <. 9. Ph__Torr. FI. p. 71.
Hab. Canada, to the Rocky Mountains, D r Richardson. Drummond.— The O. melanocarpa, Muhl.
referred here by Runtb, is a very different plant from the Piplalherum nigrum of Torr. PI.
2. O. parviflora. Nutt. Journ. Ac. Phil. p. 79.— Stipa jnncea. Mx__S. Canadensis. Poir.—Ph—Rich. App. ed. 2. p. 3— Milium pUngens. Torr. FI. p. 78.—Urachne Canadensis.
Ton. in Synop. FI. ined. Gray, Gram, et Cyp. Part II. n. 114.—Urachne bre-
vicandata. Trim.
H ab . Canada, to the Saskatchawan. Dr Richardson. Drummond.—Dr. Gray is of opinion that this is
correctly referred by Nuttall to Oryzopsis.
13. STIPA. L .
1. S. Sparta. Trin. in Act. Petr. 1830. 1, 82. (teste ipsiss. Trin.)— S. parviflora. Nutt.
Gen. Am. 1. p. 50. (fide Torrey.) (non Desf.)
Hab. Banks of the Saskatchawan. Dr Richardson.—Closely allied, as Trinius observes, to S. juncea.
Nuttall’s S. parviflora is from the Missouri.
2. S. capillata. L.— Host, Gram. 3. t. 5.— S. juncea. Ph. ?
Hab. Carlton House Fort, on the Saskatchawan. Drummond.—On the banks and plains of the Columbia,
near the Missouri Portage. Douglas.
3. S. menibranacea. Ph. 2, 728. (non L.)—S. hymenoides. R. and S.—Eriocoma cuspi-
datum. Nutt. Gen. 1, 40.— Milium. Spr.
Hab. Carlton House Fort. Dr Richardson. Drummond. Barren plains of the Columbia, from the
Great Falls to the source of the Missouri. Douglas.—I possess some of Mr Bradbury’s original specimens
from the Missouri of this exceedingly beautiful grass, given me by Dr Taylor. -
t V . A g r o st id e 2e. Kth.
14. MUHLENBERGIA. Schreb.
1. M. glomerata. Trin. Gr. Unifl. 191. t. 5.f. 10. Gray, Gram, et Cyp. Part I.p. 15.
— Polypogon. Willd.— P. racemosus. Nutt.— Torr. PI. p. 92— P. setosus. Spr__ Agrostis
racemosa. Mx.—Ph.'— A. setosa. Muhl.—Trichochloa glomerata et calycina. Trin.
Hab. Plains of Saskatchawan to the Rocky Mountains. D r Richardson. Drummond. Dry plains of
the Columbia, and valleys of the Blue Mountains. Douglas.
2. M. aristata. Pers.—Kth.— M. erecta. Schremjf^Ph.— M. Brachyclytrum, Trin.—
Gray, Gram, et Cyp. Part I. n. 11— Brachyclytrum erectum. Beauv.— B. aristatum. R. and S.—Torr. FI. p. 102.
Hab. Canada. Goldie.
3. M. Cinna. Trin.— Gray, Gram, et Cyp. Part I. n. 16.— Agrostis. Lam.—Ph.—
Cinna arundinacea. Willd.— Mx.— Torr. FI. p. 94___Kth.
Hab. Saskatchawan. Dr Richardson.
4. M. pendula (Bong.); panicula laxa pendula, glumis lineari-lanceolatis acuminatis
subsequalibus perianthium obtusiusculum subaequantibus. Bong. Veget. Sitcha, p. 54.
H ab. Sitcha. Bongard.