8 C. K. Dodge - 



NAJADACEAE 



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

 lakes near Huron Mountain Club. Common throughout. 



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

 Huron Mountain Club. Frequent throughout. 



Potamogeton amplifolius Tuckerm. L,arge-leaved Pondweed. — Common 

 in small lakes near Huron Mountain Club and throughout. 



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

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



Potamogeton Richardsonii (Benn-) Rydb. Richardson's Pondweed. — 

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

 throughout. 



Potamogeton perfoliatus 1,. Clasping-leaved Pondweed. — Plentiful in 

 small lakes near Huron Mountain Club and very probably throughout. 



Potamogeton zosterif alius Schumacher. (P. compressa L,.). Eel-grass. 

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

 throughout. 



Potamogeton pusiUiis L. Small Pondweed. — On margins of small lakes, 

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

 Abundant throughout. 



Potamogeton dimorphus Raf. Spiral Pondweed. — In small lakes near 

 Huron Mountain Club and throughout. Plentiful. 



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

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



JUNCAGINACEAfi 



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

 near Marquette. Apparently infrequent. 



AUSMACEAB 



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

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

 throughout. 



Sagittaria graminea Michx. Grass-leaved Sagittaria. — Third Pine L,ake- 

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

 throughout. 



Alisma Plantago-aqiiatica l^. (Alisma Suhcordatum Raf.). American^ 

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

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

 throughout. 



I-IYDROCHARITACEAE 



Plodea canadensis Michx. (Philotria canadensis Michx., Britton). 

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

 near Huron Mountain Club, and throughout. 



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

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

 out. 



