370 Lake Maxinkuckee, Physical and Biological Survey 

 535. HAIRY OR DOWNY YELLOW VIOLET 



VIOLA PUBESCENS Ait. 



One of the best known forms in the state, commonly abundant 

 in dry woodlands. Common in Farrar's woods, also in woodlands 

 east of the lake. 



536. LONG-SPURRED VIOLET 



VIOLA ROSTRATA Pursh 



One of the least common of our violets, and noteworthy for the 

 long slender spur. Not abundant anywhere in the state. In 

 flower about the end of April on the east side of the lake in shaded 

 places. Flowers of an attractive gray color. 



FAMILY 102. CACTACE^E. CACTUS FAMILY 



537. WESTERN PRICKLY PEAR 



OPUNTIA HUMIFUSA Raf. 



Abundant in sand dunes west of the lake. They are said to 

 have escaped from an old cemetery, and are now fairly abundant 

 in old deserted fields in the dune region. Young erect "pears" 

 were abundant August 16, 1906, mostly green, but all full-sized; 

 few were ripening and one flower bud was seen. The plant be- 

 haves much like a native. 



Observation on prickly pears, probably of this species, in an- 

 other section of the country, showed some interesting developments. 

 Sometimes the "pears" bore "joints" and these in turn bore blos- 

 soms and fruit. 



The plant is very tenacious of life. Joints laid on a table will 

 put forth buds, which will grow for some time. 



FAMILY 103. THYMELEACE^E. MEZEREUM FAMILY 

 538. LEATHER-WOOD; MOOSE-WOOD 



DIRCA PALUSTRIS L. 



Local; rather abundant in a deep rich gully northeast of the 

 lake, which is known in the country round about as "the canyon". 

 In flower April 30, 1901. It does not appear to be a common plant 

 in northern Indiana, and usually grows along the slopes of gullies. 



FAMILY 104. LYTHRACE^E. LOOSESTRIFE FAMILY 



539. SWAMP LOOSESTRIFE 



DECODON VERTICILLATUS (L.) EH. 



Common in swampy portions of the shore, as at the edges 

 of Norris Inlet and Norris Inlet marsh; formerly common on 



