SPECIES INFORMATION 



1. Classification and nomenclature. 



A. Species. 



1. Scientific name. 



a. Binomial: Astragalus barrii Barneby 



b. Full bibliographic citation: Barneby, 

 R.C. 1956. Pugillus Astragalorum XIX: 

 Notes on A. sericoleucus Gray and its 

 immediate relatives. Amer. Midi. Nat. 

 55(2) : 504-507. 



c. Type specimen: United States, Limestone 

 Butte (SE of Oelrichs) , Fall River Co., 

 South Dakota, May 4, 1952, Claude A. Barr 

 s.n. . Type specimen deposited at 

 California Academy of Sciences (Barneby 

 1956) . 



2. Pertinent synonyms: Orophaca barrii (Barneby) 

 Isely. Published: Isely, D. 1983. New 

 combinations and two new varieties in 

 Astragalus , Orophaca , and Oxytropis 

 ( Leguminosae ) . Systematic Botany 8(4):420- 

 426. 



3. Common name: Barr's milk-vetch 



4. Taxon codes: PDFAB0F150 (Montana, South Dakota 

 and Wyoming Natural Heritage programs) ; 5388 

 ASTBAR, 



5. Size of genus: Astragalus barrii is one of 

 approximately 2,000 species in this large 

 genus. Roughly 550 species occur in North 

 America (Barneby 1964), with 47 species found 

 in Montana (Dorn 1984) . 



B. Family classification. 



1. Feunily ncime: Fabaceae. 



2. Pertinent family synonym: Leguminosae. 



3. Common names for the family: Pea Family. 



C. Major plant group: Dicotyledoneae. 



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