168 New York State Museum 



not very common, is the Sycamore, Platanus occidentalis, 

 and in sequence may be found Black Willow, Salix nigra; 

 Red Maple, Acer rubrum; American Ash, Fra.vinus 

 americana; American Elm, Ulmus americana; Basswood, 

 Tilia- americana and Silver Maple, Acer saccliarinuui. 



A characteristic feature of the alluvial soils along the 

 river are dense thickets of Plum, Primus americana; 

 Nannyberry, Viburnum Lcntago, and Choke Cherry, 

 Prunus virginiana, all to be classed here as shrubs. With 

 them are numerous smaller thickets or individuals of 

 Cornus candidissiiua, Corylus cornuta, Alnus incana, 

 Salix sericea, Sambucus canadensis, Salix discolor, and 

 scattering numbers of several other shrubs which prefer 

 such soil conditions. 



As stated in the remarks regarding the vegetation of 

 the lower benches of the valley, there is usually a gradual 

 transition from the lower benches into the more fertile 

 and more moist alluvial soil of the immediate river banks. 

 As indicated in the two preceding paragraphs, certain 

 arborescent and shrubby species are very characteristic of 

 the river banks. The following list contains the most 

 abundant herbaceous species, the more important ones be- 

 ing indicated by heavy type. 



Pteritis nodulosa Carex crinita 

 Onoclea sensibilis intumescens 



Athyrium angustum " Emoryi 



Osmunda Claytoniana " scabrata 



cinnamonea Veratrum viride 



Panicum clandestinum Lilium superbum 

 Milium effusum " canadense 



Calamagrostis canadensis Smilacina stellata 



Bromus purgans Polygonatum giganteum 



altissimus Smilax herbacea 



Elymus australis Iris versicolor 



virginicus Habenaria psycodes 



Scirpus polyphyllus Laportea canadensis 



