Lake Maxinkuckee, Physical and Biological Surveij 367 

 523. DWARF ST. JOHN'S-WORT 



HYPERICUM MUTILUM L. 



Common along the edges of ponds; very abundant along the 

 northeast shore of Lost Lake. Nothwithstanding the small size of 

 plant and flower, this plant with its coppery blossoms is very 

 pretty and more attractive than some of the more showy species. 

 It was seen in blossom as late as October 25, and the leaves had 

 before this time assumed beautiful reddish tints. 



524. ORANGE-GRASS; PINEWEED 



SAROTHRA GENTIANOIDES L. 



A member of the xerophyte flora on the dry bank along the east 

 shore of Lost Lake ; an inconspicuous plant, the leaves reduced to 

 mere scales so that the plant looks strikingly naked. It has a close 

 general resemblance to Bartonia virginica, a member of the Gentian 

 family. 



♦ 525. MARSH ST. JOHN'S-WORT 



TRIADENUM VIRGINICUM (L.) Raf. 



Scattered, in the marsh near Norris Inlet. This plant, with its 

 rather broad clasping glaucous leaves and rather large dark-purple 

 blossoms, does not much resemble its close relatives, the upland 

 St. John's-worts, and though not nearly so showy, is in a way more 

 attractive than any of them. Attractive, in the secondary sense 

 of the word. The impression the plant gives is rather that of being 

 unusual. There is nothing else it reminds one of, and it is seen 

 only by those who venture into the marshes. Tamarack bogs are 

 one of its favorite habitats. 



Family 100. Cistace.^. Rock-rose Family 



526. LONG-BRANCHED FROSTWEED 



CROCANTKEMUM CANADENSE (L.) Britton 



Rather common in sandy soil, especially north and east of Lost 

 Lake. Found also by Murray's and by the ice-houses. The thin- 

 petalled, bright yellow flowers, about an inch in diameter and fur- 

 nished with a brush of numerous yellow stamens, have a peculiar 

 charm. It is after the first hard freezes of autumn, however, that 

 the plant is most striking. The bark at the base of the plant cracks 

 open and sparkling crystals of ice emerge, the result of the freez- 

 ing of the sap. Plants noted in bloom early in June. 



