IV. SPECIES LIST 



A list of 294 vascular plant taxa, observed during 

 inventories in the Mill Creek and Tie Creek drainages and the 

 East Boulder mine site, is presented below; 50 families are 

 represented. The list is arranged systematically by family, and 

 alphabetically by genus and species within the families. 

 Nomenclature and common name usage follow Hitchcock and Cronquist 

 (1973) . Abbreviations following the names indicate occurrence in 

 one or more of the survey sites (EB = East Boulder Mine Site, 

 MC = Mill Creek Timber Sale, TC = Tie Creek Timber Sale, 

 ALL = occurs at all survey sites) . 



EQUISETACEAE (Horsetail Family) 



Equisetum arvense (common horsetail) MC TC 



Moist sites, widespread. 



Equisetum laeviqatum (smooth scouring-rush) MC 



Moist to dry banks. 



POLYPODIACEAE (Fern Family) 



Athyrium f ilix-femina (lady-fern) MC 



Moist woods and stream banks. 



Cystopteris fraqilis (brittle bladder fern) TC 



Rocky stream banks. 



Dryopteris austriaca (mountain wood-fern) MC 



Moist drainages. 



Woodsia oreqana (woodsia) ALL 



Rocks and dry banks. 



CUPRESSACEAE (Juniper Family) 



Juniperus communis (common juniper) ALL 



Dry woodlands. 



Juniperus horizontalis (creeping juniper) ALL 



Dry woodlands. 



Juniperus scopulorum (Rocky Mountain juniper) MC 



Dry woodlands. 



PINACEAE (Pine Family) 



Abies lasiocarpa (subalpine fir) ALL 



Moist subalpine forests. 



