8 C. K. Dodge 



NAJADACEAE 



Potamogcton natans h. Common Floating Pondweed. — In all the small 

 lakes near Huron Mountain Club. Common throughout. 



Potamogcton epihydrus Raf. Nuttall's Pondweed. — In small lakes near 

 Huron Mountain Club. Frequent throughout. 



Potamogcton amplifolius Tuckerm. Large-leaved Pondweed. — Common 

 in small lakes near Huron Mountain Club and throughout. 



Potamogcton heterophyllus Schreb. Various-leaved Pondweed. — Abun- 

 dant in small lakes near Huron Mountain Club, and throughout. 



Potamogcton Richardsonii (Benn.) Rydb. Richardson's Pondweed. — 

 Common in the small lakes near Huron Mountain Club, and probably 

 throughout. 



Potamogcton pcrfoliatus L. Clasping-leaved Pondweed. — Plentiful in 

 small lakes near Huron Mountain Club and very probably throughout. 



Potamogcton zostcrifolius Schumacher. (P. comprcssa L,.). Eel-grass 

 Pondweed. — Abundant in small lakes near Huron Mountain Club and 

 throughout. 



Potamogcton piisiUits L. Small Pondweed. — On margins of small lakes, 

 in pools, ditches, small slow streams and ponds near Huron Mountain Club. 

 Abundant throughout. 



Potainogcto)i dimorpJuis Raf. Spiral Pondweed. — In small lakes near 

 Huron Mountain Club and throughout. Plentiful. 



Najas flcxUis (Willd.) Rostk. & Schmidt. Slender Najas. — In shallow 

 water of small lakes near Huron Mountain Club. Plentiful throughout. 



JUNCACINACEAE 



Triglochin maritima L. Seaside Arrow Grass. — Marshy open ground 

 near Marquette. Apparently infrequent. 



ALISMACEAE 



Sagittaria latifolia Willd. Broad-leaved Arrow-head. — In wet places 

 and shallow water near Huron Mountain Club and Big Bay. Common 

 throughout. 



Sagittaria graminca Michx. Grass-leaved Sagittaria. — Third Pine Lake 

 in shallow water by the "»Styx" near Huron Mountain Club. Occasional 

 throughout. 



Alisma Plantago-aqnatica L. (Alisnia Suhcordatnni Raf.). American 

 Water Plantain. — Shallow water on margins of small lakes, along small 

 streams, in ponds and ditches near Huron Mountain Club. Plentiful 

 throughout. 



KYDROCHARTTACEAE 



Blodca canadensis Michx. (PJiiJotria canadensis Michx.. Britton). 

 Water-weed. — Common in water of small lakes, ponds and sluggish streams 

 near Huron Mountain Club, and throughout. 



Vallisncria spiralis L. Tape Grass, Wild Celery. — Common and often 

 abundant in water of small lakes near Huron Mountain Club and through- 

 out. 



