64 The Vegetation of the 



Poa sylvestris Gr. woods III. 5 Mich.— Ky.— Up.Miss. 



Poa serotiiia Ehrh. banks II. 4 N.E.—E.Mts.— Or.— Alaska. 



Poa pratensis L. prairies, cultivated ground V. 10 N.E.— XJp.Mo.— 72' N.L, 



Kotzebue Sund— Greenland. 

 Poa compressa L. dry soil V. 8 N.E.— Up.Miss.— 54° N.L. 

 Poa annua L. dry prairie, cultivated land V. 4 Atl. — Pacif. 

 Eragrostis reptans Xees low sandy banks V. 10 Atl.— Up.Miss. 

 Eragrostis Frankii Mey. sandy banks V. 8 Oh.— Up.Miss. 

 Eragrostis capillaris Nees sandy soil, fields V. 8 Atl.— Miss. 

 Eragrostis pectinacca Gr. var. spectabilis sandy soil V. 7. Mass. — Oh.— Fla, 



—Miss. 

 Festuca tenella Willd. dry prairie V. 6, N.E — Up.Mo. Fla.— Cal. 

 Festuca nutans Willd. woods V. 5 N.E.— Fla.— Up.Mo. 

 Bromus Kalmii Gr. woods IV. 4 ISr.E.- Cal.— Arct. 

 Bromus ciliatus L. woods IV. 4 Atl.— Pacif. G.— Arct. 

 Phragmites communis Trin. banks, swamps II. 6 Atl. — Pacif. G. — 54°N.L. 

 Hordeum pratense Huds. roadsides IV. 5 Oh. — La.— R.Mts. 

 *Hordeum jubatum L. fields 1.3 W.Can.— Up.Miss.— R.Mts.— Cal. 

 Elymiis virgimcus L. woods IV. 4 Atl.— Up.Mo. G.— Can, 

 Elymus canadensis L. prairie, copses III. 5 N.E.— Up.Mo. 

 Elymus strictus Willd. var. villosus woods V. 4 N.E.— All.— Cal. 

 Gymnostichum Hystrix Schreb. woods V. 3 N.E.— All. (Ga.)— Up.Miss. 

 Danthonia spicata Beauv. dry open woods III. 6 Atl.— Miss. 

 Phalaris arundinacea L. swamps II. (5 N.E.— Up.Miss.— Cal.— 60°N.L. 

 Panicum anceps Michx. moist places V. 5 N.J.— Up.Miss. Fla.— La. 

 Panicum proliferum Lam. roadsides, moist places V. 6 Atl.— Miss. 

 Panicum capillare L. sandy soil V. 7 Atl.— Cal. G.— Can. 

 Panicum autumnale Bosc. sandy prairie I. 5 S.Ca. — 111. 

 Panicum virgatum L. banks, bottom V. 4 N.E.— Up.Mo. Fla.— N.Mex. 

 Panicum clandestinum L. copses II. 4 NE. — N.Ca.— Up.Mo. 

 Panicum latifolium L. copses V. 4 N.E.— Up.Miss. Fla.— N.Mex. 

 Panicum scoparium Lam. prairie III. 4 N.W.— Ga.— Miss. 

 Panicum dichotomum L. open woods, prairie V. 7 N.E.— Cal. Fla.— W.Tex. 

 Panicum depauperatiim Muhl. dry prairie, copses III. 5 N.E. — N.Ca. — 



Up.Miss. 

 Panicum crus Galli L. bottom, fields VII. 7 N.E.— Fla.— Tex.— Cal.— Or. 

 Cenchrus tribuloides L. bottom, cultivated land V. 5 N.E.— Fla.— Tex.— 



Cal.— Up.Mo. 

 Andropogon furcatus Muhl. prairie V. 5 N.E.— Up.Mo. Fla.— N.Mex. 

 Audropogon scoparius Michx. sandy soil V. 7 N.E.— Up.Mo. Fla.— N.Mex. 

 Chrysopogon nutans Benth. dry prairie V. 6 N.E.— Up.Mo. Fla. — N.Mex. 



Equisetaceae. In N. Am. 1 Gen. 13 Spec. 



Equisetum arvense L. sandy soil, banks VI. 3 N.E.— N.Mex.— Cal.— Arct. 

 •j-Equisetum palustre L bottom I. 5 N.Y.— Up.Miss. 

 Equisetum limosum L. shallow waters VI. 4 N.E.— Up.Miss. 

 Equisetum laevigatum A. Br. dry clay soil I. 3 N.Ca. — 111.— Cal. 

 Equisetum hiemale L. banks VI. 5 N.E. — N.Mex.— Cal. 

 Equisetum robustum A. Br. banks V. Oh.— N.Mex. — Or. 

 Equisetum variegatum Schleich. banks II 3 N.E.— R.Mts.— 72°N.L. 



Pilices. In N. Am. 30 Gen. 146 Spec. 



Adiantum pedatum L. woods VIII. 8 N.E.— N.Ca.— Cal.— Alaska. 



•Bordeum jubatum is observed only since five years. When not overlooked before, as it is 

 not common, then it may be that it recently immigrated from the Northwest. 



