Vlll 



Minnesota Plant Life. 



CHAPTER XXIV From Callas to Water-star-grasses 217 



CHAPTER XXV Rushes, Lilies, Blue Flags and Orchids 224 



CHAPTER X XVI Poplars and Willows 233 



CHAPTER XXVII From Bayberries to Oaks, Elms and Nettles.. . 243 



CHAPTER XXVIII . . . From Sandalwoods to Buttercups 256 



CHAPTER XXIX From Barberries to Witch-hazels 274 



CHAPTER XXX Roses, Peas and the Relatives 286 



CHAPTER XXXI From Geraniums to Maples and Touch-me-nots 305 



CHAPTER XXXII From Buckthorns to Prickly Pears 319 



CHAPTER XXXIII. .. From Leatherwoods to Dogwoods. 332 



CHAPTER XXXIV ... High Types and Low Types of Flowers 343 



CHAPTER XXXV .... From Wintergreens to Chaffweeds. 350 



CHAPTER XXXVI . . . From Ash Trees to Verbenas 360 



CHAPTER XXXVII . . From Peppermints to Plantains 375 



CHAPTER XXXVIII . From Bedstraws to Lobelias 388 



CHAPTER XXXIX. .. Dandelions, Ragweeds and Thistles 



CHAPTER XL Adaptations of Plants to their Surroundings.. 



CHAPTER XLI Hydrophytic Plants 



CHAPTER XLII Xerophytic Plants 



CHAPTER XLHI Halophytes and Mesophytes 473 



CHAPTER XLIV Maintenance of the Plant Individual 483 



CHAPTER XLV Maintenance of the Plant Species 509 



399 

 417 



442 



463 



