\ iii Minnesota Plant Life. 



CiiAi'TKK XXI\' From Callas to Walcr-slai -grasses 2x7 



Chapter XX\' Riislio>. Lilies, Blue Flags and Orchids 224 



Chapter XX\'I Poplars and Willows 233 



Chapter XXX'Il.... F'rom Bayberries to Oaks, Elms and Xcttlcs... 243 



Chapter XX\'III .. From Sandalwoods to Buttercups 256 



Chapter X X I X 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 399 



Chapter XL Adaptations of Plants to their Surroundings... 417 



Chapter XLI Hydrophytic Plants 442 



Chapter XLI I Xerophytic Plants 463 



Chapter XLI 1 1 Halophytes and Mcsophytes 473 



Chapter XLI\' }^Iaintenance of the Plant Individual 483 



Chapter XLV Maintenance of the Plant Species 509 



