MICHIGAN ACADEMY OF SCIENCE. 117 



167. Carex laxiflora Lam. var. varians Bailey. 



168. Carex flava L. 



*169. Carex Oederi Retz var. pumila (Cosson and Germain) Fernald. 

 "Edges of rock pools, and on moister parts of rock beach." Holt. 



170. Carex castanea Wahlenb. Bog forest. 



171. Carex capillaris L. var elongata Olney. Margins of rock pools. 

 *172. Carex arctata Boott. "Dry woods, Washington Harbor." Holt. 



173. Carex filiformis L. Dominant in the sedge zone of many of the 

 bogs, and also in the sedge zone of the Delta Swamp Succession. 



174. Carex oligosperma Michx. Sedge zone. Bog Succession. 



*175. Carex riparia Curtis. "Creek margin head of Rock Harbor." 

 Holt. 



*176. Carex retrorsa Schwein. "Along Washington Creek." Holt. 



177. Carex intumescens Rudge var. Fernaldii Bailey. Margin of Lake 

 Richie. 



178. Carex Michauxiana Boeckl. Sedge zone, Bog Succession. 



179. Carex vesicaria L. 



180. Carex vesicaria L. var. jejuna Fernald. Sand bar; Duncan Bay. 



181. Carex rostrata Stokes. Sedge zone, Bog Succession, frequent. 

 *182. Carex Tuckermani Dewey. "Along Washington Creek." Holt. 



Araceae. Arum Family. 



~ 183. Calla palustris L. Water Arum. Aquatic: inland lakes and delta 

 streams. 



184. Symplocarpus foetidus (L.) Nutt. Skunk Cabbage. Bog and delta 

 swamp forests and margins of very sheltered coves. 



Lemnaceae. Duckweed Family. 



185. Lemna trisulca L. Ivy-leaf Duckweed. Aquatic : delta streams. 



Eriocaulaceae. Pipewort Family. 



186. Eriocaulon septangulare Withering. Pipewort. Margin of Sargent 

 Lake. 



Juncaceae. Rush Family. 



187. Juncus Dudleyi Wiegand. Tobin's Harbor. 



188. Juncus filiformis L. Margins of rock pools, common. 



189. Juncus brevicaudatus (Engelm.) Fernald. Margins of rock pools; 

 margin of bog pond, liead of Siskowit Bay. 



190. Juncus pelocarpus Mey. Margin of bog pond, head of Siskowit 

 Bay. 



191. Juncus alpinus \'ill. Margins of rock pools. 

 *192. Juncus articulatus L. Wheeler. 



193. Luzula campestris (L.) DC. Wood Rush. 



Liliaceae. Lily Family. 



194. Tofieldia palustris Huds. False Asphodel. Sheltered rock shore cre- 

 vices and margins of rock pools. 



195. Tofieldia glutinosa (Michx.) Pers. Same habitat as last. 



*196. Uvularia perfoliata L. "Rich, moist woods, scattered." Holt. 



