Almost all wooded BLM tracts are within two miles of the Montana- 

 Wyoming state line, but not all within this zone have trees. 



Six tracts with woodland cover were visited on 27 August 1992 to 

 characterize the extent of Ouercus macrocarpa and note condition 

 (Figure 1) . In the course of this work, stand boundaries were 

 also refined, and consideration was given to the impact of recent 

 mining activity, to update species' and site conservation status 

 information. 



III. GENERAL SPECIES AND SITE INFORMATION 



A. CLASSIFICATION 



1. SCIENTIFIC NAME: Ouercus macrocarpa Michx. 



2. COMMON NAME: Bur oak, mossy-cup oak 



3. FAMILY: Fagaceae (Beech) 



4. GENUS: The genus Ouercus is a circumboreal genus 

 of temperate and montane-tropical latitudes, 

 spanning the Northern Hemisphere, characterized by 

 a single fruit (acorn) subtended by the cuplike 

 involucre. 



5. SPECIES: Ouercus macrocarpa is in the 

 Lepidobalanus subgenera commonly referred to as the 

 white oak group, characterized by rounded leaf 

 lobes. Its species name refers the exceptionally 

 large (macro) acorn (carpa; Figure 4) . 



B. PRESENT LEGAL OR OTHER FORMAL STATUS 



1. FEDERAL STATUS 



A. U.S. FISH & WILDLIFE SERVICE: None. 



B. BUREAU OF LAND MANAGEMENT: Sensitive on 

 draft list of Bureau of Land Management in 

 Montana (USDI Bureau of Land Management 1992) . 



2. STATE: Ouercus macrocarpa is currently listed by 

 Montana Natural Heritage Program (1993) as 

 endangered in the state (state rank = SI) . 



This is based on the fact that only one 

 native stand is known in the state, and that there 

 are threats to the stand. This recognition does 

 not afford any form of legal protection. 



