Lake Maxinknckee, Physical and Biological Survey 261 

 186. WATER STAR-GRASS 



HETERANTHERA DUBIA (Jacq.) MacM. 



Rather abundant in the lake off from the ice-houses, and in the 

 thoroughfare between the lakes. The long form growing in water 

 closely resembles some of the narrow-leaved species of Potamoge- 

 ton. Fragments break off, drift ashore, and take root in the mud. 

 These form a short and entirely different looking plant with bright 

 attractive yellow flowers which, sparkling up from the mud-bank, 

 draw attention to the plant. 



Family 23. Juncace^. Rush Family 

 187. common rush; bog rush; soft rush 



JUNCUS EFFUSUS L. 



Not particularly common ; the only patch in the vicinity was 

 in a low flat by Farrar's. Over this small area the soft rush grew 

 abundantly, each plant forming a large clump. These large tufts, 

 dark green throughout the entire year and drooping gracefully in 

 every direction, made the flat a pleasing picture, especially during 

 the barren portion of the year. The internal structure of the 

 stems, consisting of stellate cells, is beautiful and interesting. The 

 plants were in blossom by May 25, 1901. 



188. TOAD RUSH 



JUNCUS BUFONIUS L. 



Not very common, and confined to flats where there is consider- 

 able moisture and more or less sand. In general appearance it re- 

 sembles a diminutive form of the familiar yard rush, Juncus 

 tenuis. It clings closely to the ground and is a rather inconspicu- 

 ous plant. In the lake plain of Lake-of-the- Woods, a few miles 

 north, it covers almost the entire area in places with a dense 

 growth. At Lake Maxinkuckee it occurred along the road south of 

 Outlet Bay, and in the flat marsh north of Lost Lake. 



189. SLENDER RUSH; YARD RUSH 



JUNCUS TENUIS Willd. 



The most common and familiar of our rushes. Like the "yard 

 grass". Polygonum aviculare, it seems to thrive best in well-trodden 

 ground. It grows most luxuriantly about the haunts of man and 

 in this respect acts much like an introduced plant. Its favorite 

 habitat is along the edge of footpaths. It usually droops over the 

 pathways more or less and, in later summer after a rain, the pods 



