46 



Proceedings of the Columbus Horiicidtural Society. 



such a vast number of our northern plants have a wide range, 

 some even from the Atlantic to the Pacific, thus making it 

 impossible, in many cases, to determine whether they were 

 strictly northern or whether they shouM be listed as having 

 come from the northeast or northwest. The list of northern 

 plants, therefore, has probably been unduly increased at the 

 expense of those from the northeast and northwest, for in the 

 majority of cases they undoubtedly have moved in one or the 

 other of these directions at the time of two great glacial 

 advances along these lines. We also believe them to be north- 

 eastern or northwestern in so much as many of them are to be 

 found in Europe or Asia. However, in either case, they will 

 be designated throughout the lists, so that the reader may 

 readily distinguish them. 



The order in which the plants are arranged and the nomen- 

 clature used is that given by Britton and Brown in their 

 Illustrated Flora of the Northern States and Canada. Ranges 

 have been obtained from available sources. The Catalogue of 

 Ohio Plants by Kellerman and Werner has been the usual 

 source of information concerning distribution in the state. 

 Other sources are indicated in the list of works. 



Plants found also in Europe are marked with an asterisk * ; 

 plants having a northern range from the Atlantic to the Pacific 

 are marked with a dagger f . 



Plants f)'07Jt the NortJizvest. 



Potamogeton amplifolius, 

 Potamogeton obtusifolius, 

 Stipa sp'irtea, 

 Sporobolus heterolepis, 

 Agrostis exarata, 

 Cyperus Schweinitzii, 

 Carex aristata, 

 Carex durifolia, 

 Carex teretiuscula prairea, 

 Carex Muskingumensis, 

 Allium cernuum, 

 Asaruni acuminatum, 

 Polygonum ainphibium, 

 Polygonum Hartwrightii, 



Atriplex argentea, 

 ■•'Alsine longifolia, 



Arabis dentata, 



Erysimum inconspicuum, 



Chrysosplenium alternifolium, 

 jRibes lacustre, 



Hydrophyllum Virginicum, 



Steironema quadriflorum, 



Lonicera glaucescens, 



Valeriana edulis, 



Lactuca pulchella, 



Helianthus kTEtiflorus, 



Artemisia biennis. 



Plants from the North. 



t^Ophioglossum vulgatum, 

 t^Bolrychium ianeeolatum, 

 T*Onoclea Struthiopteris, 

 t*Woodsia glabella, 

 pDryopteris spinulosa, 

 t*Dryopteris spinulosa intermedia, 



t*Dryopteris spinulosa diiatata, 

 jPhegopteris Dryopteris, 



t*Equisecum arvense, 



t*Equisetum sylvaticum, 



f-Equisetum fluviatile, 

 *Equ'isetum variegatum, 



