SIGNIFICANT HABITATS 



A. OPEN SLOPE/LEDGE COMMUNITIES 



On low to middle-elevation slopes, especially along the 

 western side of the Bull River drainage, there occurs a series of 

 open habitats supporting interesting assemblages of plant 

 species. These areas are characterized by a moist, mossy ground 

 cover, and occur on sloping ledges and benches. These sites are 

 moist early in the growing season, after snowmelt and during 

 spring rains, but become dry by late summer. The diverse flora 

 contains numerous spring/early summer annuals, including: 



Clarkia pulchella 

 Collinsia parviflora 

 Collomia linearis 

 * Heterocodon rarif lorum 

 Madia exigua 

 * Madia minima 

 Microsteris gracilis 

 Mimulus breweri 

 Mimulus floribundus 

 Myosotis micrantha 



(* = MTNHP plant species of special concern) 



The substrates in these open areas are fragile, consisting 

 of an often closed cover of mosses and similar vascular plants 

 (especially Selaginella wallacei ) . Such sites would be 

 vulnerable to impacts from livestock grazing and/or road 

 construction, but generally occur on steep, largely inaccessible 

 terrain that does not appear to be threatened or impacted at this 

 time. 



The sites of this type that were stddied in detail include: 



a. T28N, R32W, Section 33 (east flank of Goat Rocks, North 

 Fork East Fork Bull River drainage) . 



b. T28N, R33W, Sec. 29 NW^ and 30 UEh (Dry Bench) . 



c. T27N, R33W, Sec. 24 lih and 13 SE^ ("Bull River Cliffs" 

 site) . 



Additional similar habitats were observed during field 

 surveys, but not all of them could be studied during 1989. 



B. WETLANDS 



The narrow valley bottom along the Bull River contains a 

 mosaic of low elevation forests and numerous wetlands. The 

 majority of the open, moist to wet areas have been converted to 



