CHIPPEWA COUNTY 143 



ORCHIDACEAE. Orchis Family 



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

 swampy ground throughout. 



Cypripedium parviflorum pubescens (Willd.) Knight. Larger yellow 

 lady's slipper. Rich shaded ground. Frequent throughout. 



Cypripedium acaule Ait. Stemless lady's slipper. Tamarack-black 

 spruce swamps in sphagnum throughout, but never abundant. Also in 

 shaded sandy ground. 



Habenaria bracteata (Willd.) R.Br. Long-bracted orchis. Dam]) 

 open woods. Frequent. 



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

 hardwoods. Frequent. 



Habenaria dilatata (Pursh) Gray. Tall white bog orchis. Open wet 

 and boggy places throughout. Frequent. 



Habenaria clavellata (Michx.) Spreng. Boggy wet open ground. 

 Frequent. Shaded swampy ground especially in tamarack-black spruce 

 swamps. Frequent throughout. 



Habenaria hookcri Torr. Hooker's orchis. Dry shaded ground. Ap- 

 parently infrequent. 



Habenaria orbiculata (Pursh) Torr. Round-leaved orchis. Rich 

 shaded ground near Vermilion. Apparently infrequent. N. A. Wood. 



Pogonia ophioglossoides (L.) Ker. Rose pogonia. Open wet boggy 

 ground near Vermilion. Not common. 



Calopogon pulchellus (Sw.) R.Br. Grass pink. Open wet and bog 

 places near Vermilion. Apparently not common. N. A. Wood. 



Arethusa bulbosa L. Dragon's mouth. Open bogs at Vermilion. 

 Probably frequent throughout but overlooked. 



Spiranthes cernua (L.) Richard. Nodding ladies' tresse-. Boggy 

 open places and wet open ground generally. Frequent. 



Epipactis repens ophioides (Fernald) A. A. Eaton. Lesser rattle- 

 snake plantain. Rich ground and on old mossy logs in beech-maple- 

 birch woods throughout. Frequent. 



Epipactis decipiens (Hook.) Ames. Menzie's rattlesnake plantain. 

 Dryish open or slightly shaded places, often in rich ground. Plentiful 

 throughout. 



Listera cordata (L.) R.Br. Heart-leaved twayblade. Wry we1 and 

 swamp}'- place near Vermilion. Apparently infrequent, probably over- 

 looked. 



Listera convallarioides (Sw.) Torr. Broad-lipped twayblade Damp 

 places in hardwoods. Frequent but seldom abundant. 



