CONTENTS. 



New Species of the Genus Mimulus 1 



New Western Asteraceae 8 



New Composites from Oregon, Washington and Idaho . 14 



New Plants from Arizona 20 



New Calif ornian Asteraceae 25 



Some Western Caulescent Violets 32 



Reconsideration of the Genus Marah 35 



An Oriental Convallaria 36 



Nomenclature of the Bayberries 37 



Two New Southern Violets 41 



Three New Astragali 42 



The Genus Downingia 43 



Miscellaneous Specific Types. — I 45 



Miscellaneous Specific Types. — II 86 



Miscellaneous Specific Types. — III 105 



Miscellaneous Specific Types. — IV 152 



Miscellaneous Specific Types. — V 225 



Miscellaneous Specific Types. — VI 270 



Studies of Thalictraceae. — I 49 



Studies of Thalictraceae. — II 89 



Certain American Roses 60 



Some Allies of Hibiscus Moscheutos 64 



Two New I/Upines 67 



Some Western Species of Arabis 69 



New Papilionaceae 83 



A Fascicle of Violets 94 



New Species of Sambucus 99 



A New Name for the Bayberries 101 



Some Southwestern Mulberries 112 



A Further Study of Agoseris 121 



Some Western Roses 132 



A Cruciferous Monotype 136 



Four New Polentillaceae 137 



