86 Rhodora [May 
a lake, not of warm coastwise lagoons and sandy shores like the others, 
but a cold and bleak one surrounded by mountainous country— 
the habitat of northern types of plants. 
Clair Rivers, 
Saginaw Bay (Lake Huron) 
Dunes of Illinois River. 
Shores of Lake Ontario. 
Region of Lake Erie. 
Hudson-Mohawk Valley and 
Ontario Basin (Finger Lakes). 
Detroit & St. 
Lake St. Clair & Port Huron. 
Grand Rapids (Grand River) 
Region of Lake Michigan. 
Woodwardia virginica............. x Xx xXx 
Isoëtes Engelmanni............. ..| X 
Potamogeton pulcher. ............. 
Potamogeton bupleuroides... ...... x 
Potamogeton hybridus............. x x 
Najus gracillima. . e x ? 
Andropogon scoparius, var. | villosis-- ? ? 
simus 
Andropogon scoparius, var. polycla- | ? | ? | ? ? | ? ? 
dos (littoralis) 
Panicum debile (verrucosum)....... 
Panicum lucidum................-. 
Panicum sppetum,, saaressa 
Panicum meridionale............... X LX 
Panicum albemarlense............. 
Panicum oligosanthes.............. 
Echinochloa Walteri. . ..| X 
Ammophila breviligulata ur arena- x 
ria’’).. 
Aristida tuberculosa............... 
Eleocharis quadrangulata........... x x | xX x 
Eleocharis interstincta............ 
Eleocharis melanocarpa. . 
Eleocharis caribaea (capitata), var. 
dispar 
Psilocarya scirpoides.............. 
Psilocarya nitens................. 
Fimbristylis autumnalis........... x 
Scirpus Eriophorum.............. 
Scirpus Smithiil.................. x 
Fuirena squarrosat............... 
Hemicarpha micrantha........... x 
XX 
XX 
xX XXX 
X 
XXXXXXX XXXXX XOXXXXXXX X X XXX X 
X XXX 
X X 
1 The report from “northern Ohio" (Kellerman & Werner) is probably incorrect, 
as is also that from central New York State given by Sartwell and quoted by Coville, 
Revision of U. S. Species of the Genus Fuirena, Bull. Torr. Bot. Club, xvii. 8. 
