1973, Kuijt 1982, Vteber 1975, Van Bruggen 1976, Harrington 1964 and 

 Dom 1988). In Arizona, ha-^ver, it is found in pine forests frcm 

 7,CX)0 to 9,500 feet (Kearney and Peebles 1960). 



Vfest Butte v.-as revisited in an atterrpt to relocate hsart-leaved 

 buttercup. Several Ranunculus specimens v.'ere collected, but R. 

 cardiophyllus v.-as not found. Given the inprecise location reported on 

 the herbarium label frcm the previous collection, a gereral site 

 traverse was conducted in suitable habitats in and near the PACBC. 



The veracity of the previous collection is not questioned; failure to 

 relocate the population may indicate that it is very small, or that it 

 has been extirpated. Also, the previous collection may have been made 

 on private land outside the Sv/eet Grass Hills PACEC. 



3.1.2 Claytcnia lanceolata variety (Springbeauty) 



Springbeauty ( Claytcsiia lanceolata var. flava ) is listed as critically 

 imperiled in Montana because of extreme rarity; it is designated "C2" 

 by t±>e U.S. Fish and Wildlife Service (current information indicates 

 that proposing to list as endangered or threatened is possibly 

 appropriate but substantial biological infoxmation is not on file to 

 support an iirrrediate ruling); and as sensitive by the U.S. Forest 

 Service (Shelly 1989). Claytonia lanceolata is ccmrron in the Hills 

 and several specirrens v;ere collected. Specirrens collected have v.Mte 

 floisers and narrow leaves, and may represent either variety multiscapa 

 or a v;hite form of variety flava (Shelly pers. ccrnn. ). Systematic 



