CONTENTS. 



Distribution of Bidens Tulgata _ 1 



A New Southern Violet _ 2 



In the Wrong Genus 4 



Further Segregates from Aster _ 4 



Neglected Bupatoriaceous Genera _ 7 



The Logic of It 14 



Certain Polygonaceus Genera 17 



Neckerian Cactaceous Genera _ 50 



North American Species of Amarella 53 



Seven New Apocynums 56 



Affinities of the Cichoriaceae __ 59 



Some Western Buckthorns 63 



New Species of Ceanothus _ 65 



The Genus Pneumonanthe _ 68 



A Eare Swertia - 73 



New Plants from Middle California 73 



Certain West American Cruciferae _ 81 



Laothoe - - 90 



On Certain Gentianaceae 91 



Two New Batrachia 95 



Two New Sophiae 96 



A Proposed New Genus, Auotites 97 



Some New England Persicarias _ 105 



What is Nuttallia Davidiana ? 110 



Three New Heucheras Ill 



The Genus Eadicula 188 



Segregates of the Genus Ehus 114 



New Plants from Southwestern Mountains _ 146 



Atasites and Thyrsanthema 154 



New Species of Chaptalia 158 



A Proposed New Genus, Callisteris 159 



New Species of Pentstemon 160 



