SHORE OF LAKE HURON 33 



IRIDACEAE. Iris Family 



Iris versicolor L. Larger blue flag. Occasional in low and damp open 

 ground throughout. 



Iris lacustris Nutt. Lake dwarf iris. First noticed near Alpena and 

 not far from the Lake Huron shore in damp or dry and open or slightly 

 shaded ground. Very abundant in spots from there to St. Ignace, and 

 on Bois Blanc Island in Mackinac County. 



Sisyrinchium august i folium Mill. Pointed blue-eyed grass. In damp 

 open ground from Bay County to Mackinac Island, Mackinac County. 

 Frequent. 



ORCHIDACEAE. Orchis Family 



Cypripedium arieiinum R. Br. Ram's head lady's slipper. Said to 

 be plentiful in swamps near Huron Beach north of Alpena. Not seen 

 by writer. 



Cypripedium parviflorum Salisb. Smaller yellow lady's slipper. In 

 damp rich shaded ground from Bay County to St. Ignace and on Macki- 

 nac Island, Mackinac County. Frequent. 



Cypripedium parviflorum pubescens( Willd.) Knight. Larger yellow 

 lady's slipper. In rich shaded ground from Bay County to St. Ignace 

 and on Mackinac Island, Mackinac County. Frequent. 



Cypripedium hirsutum Mill. Showy lad3^'s slipper. Occasional 

 throughout in damp or wet open or slightly shaded ground. Abundant 

 in spots in Presque Isle and Cheboygan counties. 



Cypripedium acaule Ait. Stemless lady's slipper. In shaded sandy 

 ground throughout but seldom abundant. 



Orchis spectabilis L. Showy orchis. Rich woods. Occasional through- 

 out. 



Habenaria bracteata (Willd.) R. Br. Long bracted orchis. In rich 

 woods from Alpena to St. Ignace and on Mackinac Island, Mackinac 

 County. Frequent. 



Habenaria flava (L.) Gray. Tubercled orchis. In wet open or shaded 

 places from Alpena to St. Ignace and on Mackinac Island. Frequent. 



Habenaria hyperborea (L.) R. Br. Tall leafy green orchis. In damp 

 woods from Alpena to St. Ignace and on Mackinac Island. Frequent. 



Habenaria dilatata (Pursh) Gray. Tall white bog orchis. In very 

 wet open boggy places from Bay City, Bay County, to St. Ignace and on 

 Mackinac Island, Mackinac County. Frequent. 



Habenaria clavellata (Michx.) Spreng. Small green wood orchis. Bn^ 

 and moist ground. Frequent. 



Habenaria obtusata (Pursh) Richards. Small northern bog orchis. 

 Rich woods. Frequent throughout. 



Habenaria hookeri Torr. Hooker's orchis. Dry or damp shaded 



