MICHIGAN FLORA. 



501 



Pond-weed. 

 Pond-weed. 

 Pond-weed. 

 Pond-weed. 

 Pond-weed. 

 Pond-weed. 

 Pond-weed. 



Pond-weed. 

 Pond-weed. 

 Pond-weed. 

 Pond-weed. 



Pond-weed. 

 Pond-weed. 

 Pond-weed. 

 Pond-weed. 

 Pond-weed. 

 Pond-weed. 



Pond-weed. 

 Pond-weed. 



Pond-weed. 

 Pond-weed. 



1088. 

 1089. 

 1090. 

 1091. 

 1092. 

 1093. 

 1094. 



1095. 

 1096. 

 1097. 

 1098. 



1099. 



1100. 



1101. 



1102. 



1103. 



1104. 



1105. 



1106. 



1107. 

 1108. 



Claytonii, Tackerman. 



Ionia Co. (!); Macomb Co.— Dr. D. Cooley ; Fruitport— E. J. Hill 



lateralis, Morong. 



Bear Lake, Van Buren Co.— E. J. Hill. 



Spirillus, Tackerman. 



" Lake Superior "—Gray's Manual. 



hybriclus, Michx. 



Dr. A. B. Lyons. 



rufescens, Schrader. 



Mud Lake and Bear River, Petoskey— E. J. Hill. 



lonchites, Tackerman. 



Hubbardston (!); Macomb Co. 



amplifolius, Tuckerman. 



Maple River (!); Macomb Co.; Pere Marquette River at Ludington— E. J. 

 Hill. 



graminens, L., var. graminifolius, Fries. 



Bear Lake, Van Buren Co.— E. J. Hill. 



gramineas, L., var. heterophyllus, Fries. Th. 



Woodard Lake, Ionia Co. (!); Flint; Macomb Co.; and northward. 



lucens, L. 



Muskegon River, near Houghton Lake (!); Flint; S. Mich.— Wright Cat. 



zizii, Schum. 



Crystal Lake, near Frankfort, and Bear Lake, Manistee Co.— E. J. Hill; 

 Crystal Lake, Montcalm Co. (!); and Woodard Lake, Ionia Co. (!). 



Th. 



U. P. 



Th. 



C. &S. 



Infrequent. 



L. P. 



prselongus, Waif en. 



Maple River (!), etc. Common. 



perfoliatus, L. Th. 



Maple River (!), etc. Common. 



perfoliatus, L., var. lanceolatus, Bobbins. 



Little Traverse Bay, etc.; "Along the Great Lakes"— Gray. 



zosterrefolius, Sch. Th. 



Maple River and its tributaries (!), etc. Common. 



obtusif olius, Mertens & Koch. 



"Floating in Gratiot Lake, N. Mich."— Gray's Manual. 



pauciflorus, Pursh. Th. 



Hubbardston (!); Grand Rapids (!); Flint; Macomb Co.; and northward, 

 pusillus, L. 



Manistee Lake— E. J. Hill. 



pusillus, L., var. major, Fries. 



Crooked River, Cheboygan Co., and common at Manistee and Frankfort— 

 E. J. Hill. 



pectinatus, L. Th. 



Fish Creek, Hubbardston (!). Frequent. 



marinus, L. 



Crystal Lake, near Frankfort, Benzie Co.— E. J. Hill. Rarer species de- 

 termined by E. J. Hill, of Engelwood, Illinois, whose knowledge of this 

 difficult genus is well known. 



Arrow-grass. 



ALISMACEJE. 



( Water-Plantain Family.) 



TEIGLOCHIN 



1109. palustre, L. 



Marshes. 



Th. 



Frequent. 



