Feb., 1912.] Plants Recognized on a Dumping Ground. 



475 



movement the lowering of the temperature, the decrease of light, 

 or the fatigue of the protoplasm? These problems are for the 

 plant physiologist. But anyone will find the habits interesting 

 in themselves. They show that there is a real plant behavior as 

 well as an animal behavior and by taking an evening ramble 

 before and after sunset the fact will become evident that many 

 plants change their ]30sitions with the coming of the night even as 

 do most of the animals. 



PLANTS RECOGNIZED ON A DUMPING GROUND AT THE 

 FOOT OF NINTH STREET, CLEVELAND, OHIO. 



Edo Claassen. 



It was during the month of June that I visited this locality. 

 Being quite surprised by the great number of different plants I 

 saw growing there, I resolved to make a close inspection of a 

 part (about 40 acres) of this tract of land in the course of several 

 weeks. The result is contained in the following list, which is. 

 arranged in confonnitv with "Britton and Brown's Flora." 



Mosses. 

 Funiiria hygrometrica, L. 

 Bryum argenteum, L. 

 Leptodon piriforme, Hampe. 



Gramineae, Jnss. 

 Agrostis alba, L. 

 Avena sativa, L. 

 Cenchrus tribuloides, L. 

 Eragrostis eragrostis, (L.) Karst. 

 Eragrostis pilosa, (L.) Beauv. 

 Festuca elatior, L. 

 Hordeum vulgare, L. 

 Ixophorus glaucus, (L.), Nash. 

 Panicum capillare, L. 

 Panicuni crus galli, L. 

 ■Panicum proliferum, Lam. 

 Panicum virgatum, L. 

 Phleum pratense, L. 

 Poa annua, L. 



Poa compressa, (L.) Bcauv. 

 Poa pratensis, L. 



Syntherisma sanguinale, (L.) Nash. 

 Triticum vulgare, L. 

 Zea Mays, L. 



Juncaceae, Vejtt. 

 Juncus bufonius, L. 



Salicaceae, Lindl. 

 Populus alba, L. 

 vSalix nigra. Marsh. 



Polygonaceae, Lindl. 

 Polygonum aviculare, L. 

 Polygonum cilinode, Michx. 

 Polygonum erectum, L. 

 Polygonum lapathifolium, L. 

 Polygonum persicaria, L. 

 Rumex acetosella, L. 

 Rumex altissimus, L. 

 Rumex crispus, L. 

 Rumex obtusifolius, L. 



Chenopodiaceae , Dumort. 

 Atriplex hastata, L. 

 Chenopodium album, L. 

 Chenopodium ambrosioides, L. 

 Kochia scoparia, (L.) Roth. 

 Salsola Tragus, L. 



Amaranlhaceae, J. St. Hil. 

 Amaranthus graecizans, L. 

 Amaranthus retroflcxus, L. 



Aizoaceae, A. Br. 

 Mollugo verticillata, L. 



Cruciferae, B. Juss. 

 Lepidium Virginianum, L. 

 Sisymbrium altissimum, L. 

 Sisymbrium officinale, (L.) Scop.. 



Rosaceae, B. Jtiss. 

 Potentilla Monspeliensis, L. 



Driipaceae, DC. 

 Amygdalus persica, L. 



