29 



copies were made available to the Forest and to 

 the U.S.F.S. Regional office. Policies and 

 provisions by the U.S.F.S. for sensitive plant 

 species are outlined in section I.2.B.l.a. 

 (p. 2) of this report. 



4. Future land use: Several occurrences of this 

 species are on or adjacent to land that is 

 being strip mined for coal. It is possible 

 that some of these occurrences may be 

 eliminated through continued mining. 

 Populations on private mine lands should be 

 periodically resurveyed. 



Cultivation. 



1. Controlled propagation techniques: Small mats 

 of A. barrii have been successfully 

 transplanted into a mixture of one-third sand, 

 one-third clay loam, and one-third gravel 

 including limestone, and planted well-spaced, 

 in full sun (Barr 1951) . Also, seeds of A. 

 barrii were successfully germinated, and plants 

 are being propagated by the Nebraska Statewide 

 Arboretum under the auspices of the Center for 

 Plant Conservation (Locklear 1987) . 



2. Ease of transplanting: Young (small) mats of 

 A. barrii appear to be more successful in 

 transplants than older (larger) mats (Barr 

 1951) . 



3. Pertinent horticultural knowledge: Several of 

 the cushion Astragalus appear to transplant 

 well, but require si/tes with full light and no 

 competition from other plants (Barr 1951) . 

 More information on this species may be 

 available from the Nebraska Statewide Arboretum 

 (Locklear 1987) . 



4. Status and location of presently cultivated 

 material: 



a. Specimen plants: Plants of A. barrii were 

 transplanted by Claude A. Barr to the 

 Prairie Gem Ranch near Smithwick, South 

 Dakota in the late 1940 's or early 1950 's 

 (Barneby 1956) . He also apparently sold 

 this species for horticultural purposes. 

 However, it is not known if these 

 horticultural specimens are extant. 



