PHENOLOGICAL NOTES. 125 



determining species. Most species of the wild grape, 

 for example, have periods of flowering that are relatively 

 quite definite. This is an aid to the botanist in i 

 specimens that are otherwise variable. 



n g 



dy plants 



more 



class. The nomenclature of North American species con- 

 forms to Patterson's Check List of North American Plants, 

 which is easily accessible, while its nomenclature is 

 universally known. 



To facilitate comparison with the phenology of plants 

 in Europe, an asterisk is placed after species included in 

 the list of the Royal Meteorological Society of Great 

 Britain,* and a dagger is placed after species included in 

 the list of the Botanischer Verein der Provinz Branden- 

 burg, t In the notes on woody plants, ( 1 ) indicates that at 

 the time of writing (Jan. 25, 1894) the leaves have not 

 entirely fallen , and ( 2 ) indicates that some fruit remains 

 on the plant through the winter. 



* Cf . list of Kev. T. S. Preston, 1883, etc. 



f Magnus, Tabellarische Zusammenstellung ptaaenologischer Beo- 



bachtungen, 1893. 



