•310 on the ground and ca. 2 0% west of Hwy 310 from the ground. 

 The remaining area was mapped by extrapolation from the ground- 

 truthed areas. Lines enclosing community types were transferred 

 to 1:24000 USGS topographic maps after completion of field work. 

 During field work I took notes on community composition when it 

 deviated from descriptions provided by DeVelice and Lesica 

 (1993) . 



Plant communities are often not discrete entities on the 

 landscape, but rather blend into one another across ecotones of 

 varying widths (Gleason 1926, Whitaker 1975). Lines separating 

 community types were generally drawn along ecotones. Areas 

 mapped as one community type may have inclusions of locally less 

 common types. The minimum mapping unit was ca . 40 acres. Stands 

 smaller than 40 acres were usually included within larger 

 surrounding mapping units. 



Results 



A list of all community types reported by DeVelice and 

 Lesica (1993) is provided below. Each entry is followed by the 

 current Natural Heritage Program global and state ranks as well 

 as any additional information acquired during 1993 field studies. 



Global and state ranks are defined as follows: 



^ Gl or SI 1-5 occurrences or less than 2,000 acres in world or 

 9 state respectively. 



G2 or S2 6-20 occurrences or 2,000-10,000 acres in world or 

 state respectively. 



G3 or S3 21-100 occurrences or 10,000-50,000 acres in world or 

 state respectively. 



G4 or S4 Apparently secure in the world or state respectively 



G5 or S5 Demonstrably secure in the world or state respectively 



All community types with a global rank of 1-3 and/or a state 

 rank of 1-2 were considered rare and were mapped. These types 

 are shown in bold below. The number in front of each type is 

 used to identify that type on the maps. Numbers of community 

 types ranked Gl are in red; those ranked G2 are in green; and 

 those ranked G3 are in black. 



1. Ajbies lasiocarpa/ Arnica cordifolia c.t. G5/S5 



2. Ajbies lasiocarpa/Clematis columbiana c.t. G4/S3 

 ^^ 3. Ajbies lasiocarpa/Ribes montigenum c.t. G5/S4 



2 



