SPECIES INFORMATION 



A. CLASSIFICATION 



1. SCIENTIFIC NAME: Lesquerella humilis R. Rollins. 



2. COMMON NAMES: Few-seeded bladderpod, Bitterroot 

 bladderpod . 



3. FAMILY: Brassicaceae (=CrLicif erae; Mustard 

 Fami ly ) . 



^. GENUS: Lesquerel 1 a humi lis is one of 

 approximately 75 species in the genus in North 

 America; of these, most are concentrated in the 

 southwestern United States, Mexico, and the Rocky 

 Mountain and intermontane basin regions of the 

 western United States (Rollins and Shaw, 1973). 

 Within the genus, the nearest relative to L. 

 humi lis is L. hemiphysar ia . The ranges of the 

 two species are allopatric; L. humi 1 is is 

 restricted to the Bitterroot Range in Montana, and 

 L. hemiphysaria is confined to central Utah 

 (Rollins, 198^). 



5. SPECIES: Lesquerel la humi lis is a recently 

 described species (Rollins, 198^). It was first 

 discovered on St. Joseph Peak in the Bitterroot 

 Range in 1966, by Klaus H. Lackschewitz and Tor 

 Fageraas. This specimen, and other early 

 collections, were variously labeled as Lesquerel la 

 alpina , Physaria didymocarpa , or P. qeyeri , but 

 Dr. Reed Rollins ultimately determined that they 

 represented a previously undescribed species. The 

 type specimen was collected in 1983 by Reed and 

 Kathryn W. Rollins, with Lackschewitz, Peter 

 Lesica, and Aileen G. Roads, near the summit of 

 St. Mary Peak, also in the Bitterroot Range. In 

 Montana, L. humi lis is one of six species reported 

 for the genus (Dorn, 198^; Rollins, 198^). 



B. PRESENT LEGAL OR OTHER FORMAL STATUS 



1. FEDERAL STATUS 



a. U.S. FISH AND WILDLIFE SERVICE: None. 



b. U.S. FOREST SERVICE: Lesquerella humilis is 

 currently included on the list of sensitive 

 plant species for Region 1 (Northern Region) 

 of the U.S. Forest Service (A. Evenden, pers. 

 comm. ) . Agency objectives and policy in the 



198^ Forest Service Manual provide for the 

 management and protection of sensitive 



