10 Karl M. Wiegakd and Arthur J. Eames 



duced; when fully established, they are naturalized. Only native plants 

 or those so fully established as to maintain themselves from year to year 

 are given a full numbered place in the catalog. Those not yet established 

 are listed in brackets, or a few in footnotes only. Varieties are indicated 

 by the abbreviation var., and forms by the word forma. Common names 

 are given when such are known to be frequently applied to the plant. 

 Synonyms are given only when their omission would lead to confusion. 

 In general, they are included only when the name used differs from that 

 employed in Gray's Manual of Botany (seventh edition). A reference is 

 added, in such cases, to a place where the status of the name is fully 

 discussed. An attempt has been made to correlate the nomenclature used 

 with that found in Dudley's Flora. 



Plants are listed as to frequency under the following terms, in sequence 

 as to abundance: rare, scarce, infrequent, frequent, common. A plant 

 having five known stations or less is considered rare unless it is so 

 abundant at some of the stations as to violate the idea of rareness. Col- 

 lectors, except when these are the authors, are cited for rare plants. 

 Stations are not cited for plants that are common. The symbol (D.) 

 indicates that this station was listed in Dudley's Flora, and ( !) indicates 

 that the plant has been seen by the present authors at the same station. 

 The dates given in the first paragraph under each species refer to the time 

 of flowering unless specifically indicated to represent the fruiting period. 



Only species and varieties are included in the keys, forms being omitted. 

 Occasionally at the end of a paragraph in a key, additional material is 

 given in parenthesis. This is for information only, and is not intended 

 to contrast with a similar statement in the corresponding division of 

 the key. 



MAPS 



Two maps are provided. One is merely an outline map of New York 

 showing the location of the Cayuga Lake Basin. The other is a detailed 

 map of the basin, on which are located the important political features of 

 the region together with most of the swamps, ponds, and streams that 

 are of importance to the collector and are cited in the text. Four levels 

 of altitude are indicated on the map, in an attempt to represent the 

 Ontario plain, the lower plateau, the upper plateau, and the highest hills. 

 After a study of the escarpments between these regions, the altitude 

 chosen to limit the lowest level was 275 meters (900 feet). The second 

 level then fell between 275 and 427 meters (900 and 1400 feet), the 

 higher level between 427 and 550 meters (1400 and 1800 feet), and the 

 highest hills between 550 and 640 meters (1800 and 2095 feet). The 

 map was checked with the United States topographical maps for accuracy 

 of detail in placing towns, railroads, swamps, ponds, streams, and other 

 features, and the topography was worked on to the map from the topo- 

 graphical maps. 



