GLOBAL DISTRIBUTION: North-central Wyoming and adjacent south-central 

 Montana 



MONTANA DISTRIBUTION: Southern Big Horn and Carbon counties 



PRYOR MOUNTAINS DESERT DISTRIBUTION: Erigeron allocotus is widespread 

 and uncommon to abundant between 1525 and 2315 m (5000 and 7600 ft) on the south 

 slopes of the Pryor Mountains. We located 17 populations in shallow limestone-derived 

 soil in juniper woodland and plant associations dominated by Cercocarpus ledifolius . 

 Artemisia arbuscula and Phlox spp. 



MANAGEMENT RECOMMENDATIONS: Erigeron allocotus is common on limestone 

 at mid-elevations in the Pryor Mountains. Many of the sites where it is found are not 

 subject to livestock grazing. This species should not be given special status on BLM's 

 Miles City District. 



Eriogonnni X laoopiis Rydberg 



Rabbit Buckwheat 



NATURAL HERITAGE PROGRAM S TATUS: G3/S3 



MONTANA STATUS: Limited Distribution 



GLOBAL DISTRIBUTION: South-central Montana and adjacent Wyoming 



MONTANA DISTRIBUTION: Southern Carbon County and reported from Park and 

 Yellowstone counties. 



PRYOR MOUNTAINS DESERT DISTRIBUTION: Eriogonum lagopus is abundant 

 between 1220 and 1675 m (4000 and 5500 ft) on the south and west sides of the Pryor 

 Mountains. Large populations occur in barren sandy to clay soils in a number of plant 

 associations, including juniper woodland, sagebrush steppe and, most commonly, cushion 

 plant communities dominated by Agrc^pyron spicatum , Ceratoides lanata and Phlox spp. 



COMMENTS: Eriogonum lagopus is thought to be a fertile hybrid between E, 

 brevicaule and E, paucitlorum (James Reveal, personal communication). Other 

 authorities treat such hybrids as varieties of E, brevicaule (Welsh et al. 1987). Robert 

 Dorn calls this plant E, brevicaule var. canum (Stokes) Dorn (Dorn 1988). Eriogonum 

 lagopus is a candiiiate for listing as a threatened or endangered species under the 

 Federal Endangered Species Act (USDl-FWS 1990). 



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