IV COITTENTS. 



Madronella _ 168 



New Species of Isocoma 169 



New Asteraceous Genera _ _... 173 



Segregates fronj Sieversia 174 



Various New Species 180 



Mutations in Viola _ 182 



The Genus Tridophyllum 188 



New Species of Mimulus - 189 



Further Study of Chaptalia 190 



Icianthus and Sprengeria 197 



New or Noteworthy Species .-. _ 199 



An Unwritten Law of Nomenclature 201 



Certain Malvaceous Types 205 



The Genus Nuttallia _ * 309 



The Genus Bossekia „ , 210 



New Plants from New Mexico _ 211 



New Species of Viola _ _ 214 



Parthenocissus a Synonym _ 219 



New Western Plants _ 221 



A New Genus of Eutaceae _ 222 



The Genus Leiostemon _ 223 



The Genus Batanthes 224 



Four Streptanthoid Genera 224 



Mittellastra and Eubacer _ _ _ 229 



An Orchid Note 237 



Certain Kosaceous Genera 237 



Some Oriental Eubus Allies ~ _ 246 



A New Bland Violet 247 



