CATALOGUE OP PLANTS. 41 



COMMELINACEAE. Spidekwort Family. 



TRADESCANTIA L. Spiderwort. 



350. T. Virginica L. Common Spiderwort. 

 Dry sandy soil; common. Jmie-Sept. 



PONTEDERIACEAE. Pkkerel-weed Family. 



HETERANTHERA R. & P. Mud-Plantain. 



35L li, graminea Valil. 



//. duhia (Jacq.) MacM. 

 Lakes and still streams; common. July-Oct. 



PONTEDERIA L. Pickerel-weed. 



352. P. cordata L. 



Borders of lakes and slow streams; common. July- Aug. 



JUNCACEAE. Rush FaMiLY. 



JUNCUS L. Rush. Bog-Rush. 



353. J. acuminatus Michx. 



In wet places; infrequent. July. 



Pickerel Lake; Pine Island Lake; West Omens Lake. 



354. J. articulatus L. 



Moist ground; rare. July. 

 Margin of Gold Lake; Round Lake. 

 Rare in the State. 



355. J. Balticus Willd. 



Sandy shores of Silver Lake. June. 



Common on the shores of the Great Lakes; rare in the interior. 



356. J. brachycephalus (Engelm.) Buch. 

 Wet sandy places; frequent. Aug. 



Stafford Lake; Bostwick Lake; Silver Lake; Spruce Lake; Farm 

 of L. N. Wade, Sees. 31 and 32, Plainfield. 



