165 



157. 0. hir.sutuni Mill. Lnrjie Yellow Lady's Slipper. (T. inibcsrcns Willd.) 



Found in dry soil by Yarnelle's landing'. 

 15.S. Habenaria lacera iMich.xi K. Br. Ragged Orchis. 



Found in the southwestern iH>rtion of the lake plain. 

 159. H. leucopaea (Nutti (Ji.iy. White-fringe<l Prairie Orchis. 



In the tamarack marsh northeast of the lake. 

 H!(i. H. psyoodes (li.i (Jray. Purple-fringed Orchis. 



Soutlieast edge of lake plain. 

 1«»1. Pogonia ophioglossoides (L.l Ker. Rose Pogonia. 



In the tamarack northeast of the lake. 

 1»>2. (;yrosta<'hys gracilis (Bigeli Kuntze. Slender Ladies" 'I'rt-sses. 



Found in a diy wood east of the lake. 

 1(5.*?. Corallorhiza odontorhiza (Willd.) Nutt. Small-tlowere<l Coi'al Root. 



Not rare in a wo<m1 south of the outlet. 

 I(i4. Limodoruni tuherosimn L. (Trass IMid<. ((V//o/>m//»>/; inihhclUia R. Br.) 



Abundant in tamarack noi-theast of tlie hike. 

 Kio. Sanrurus cernnns L. Lizard's Tail. 



In wt't grounds ;ilong Cherry Creek and Clear Creek. 

 16G. Juglans nigra L. Black Walnut. 



Scattered in rich woodlands. 

 1G7. .1. cinei-a L. Butternut. 



0<-casion:il, in woodlands. 

 li;s. Micori.i ovata (Mill) Britton. Shagbark Hickory. U'dii/a ttUni Xutt.i 



In woodlands. 

 100. H. laciniosa (.Michx. f.t Sarg. Big Shellltark. (Curi/a HiiUntn Xutt.) 



In woods near Cherry Creek. 

 17<>. II. alba iL.) Britton. .Mocker Nut. White-lieart Hickory. yCanja 

 toiiiviitfjsii Xutt.)' 



A few trees not«'d. 



171. Populus alba L. AMiite Poplar. 



A few trees have escaped cultivation near Warsaw. 



172. P. grandidentata L. (Tvcjit-tootlied Aspen. 



Occasional. 



173. P. tremuloides Michx. American Aspen. 



Orows along the lake shore near Chicago Pier. 



174. P. deltoides Marsh. Cottonwood. (P. nionilifera Ait.) 



Xot rar(^ in low irrounds. 



