pubescent on interior; replum narrowly obovate* 

 obtuse above» 2.5-3 mm. (0.1-0.12 in.) long; 

 styles pubescent or glabrous, 3-3.5 mm. (0.12-0.1^ 

 in.) long; ovules 2 in each locule; -funiculi 

 attached near apex of replum; seeds slightly 

 longer than broad, wingless, thick, ca. 2 mm. 

 (0.08 in.) long, ca. 1.8 mm. (0.07 in.) wide; 

 cotyledons accumbent (Rollins, 198^). 



3. LOCAL FIELD CHARACTERS: Other related members of 

 the Brassicaceae which were observed within the 

 range of L. klausi i include Lesquerel la alpina 

 (Alpine bladderpod) and Physar ia didymocarpa 

 (Common twinpod). Lesquerel la alpina is 

 distinguished in having generally narrow, entire 

 leaves, generally shorter stems, and less inflated 

 fruits which are often narrowed and flattened at 

 the apex. Physaria d idymocarpa is distinguished 

 in having much larger leaves and flowers, and very 

 large inflated fruits. Lesquerel la klausi i 

 possesses smaller, wide fruits which are notched 

 at the tip. In addition, L. klausi i is often 

 restricted to open shale barren slopes, and was 

 only found growing with Physaria d idymocarpa in 

 two locations (Red Mountain (023), Bull Run Gulch 

 (016) ) . 



GEOGRAPHICAL DISTRIBUTION 



1. RANGE: Lesquerel la klausi i is a state endemic, 

 restricted to Lewis &< Clark and Meagher Counties 

 in western Montana. It has been located on the 

 Helena and Lewis & Clark National Forests, in 

 Region 1 of the U.S. Forest Service. 



2. CURRENT SITES: Lesquerel la klausi i is recently 

 documented (1986-87) from 27 sites; 24 are in 

 Lewis i Clark County, and three are in Meagher 

 County. The legal descriptions, latitude and 

 longitude, elevations, USGS topographic quad 

 names, and locations of the sites are provided in 

 Table 1. These are subdivided to indicate those 

 sites which occur wholly or partially on U.S. 

 Forest Service lands (Table lA, pp. 4-8), and 

 those sites which occur on lands of other 

 ownership (Table IB, p. 9). The distribution in 

 Montana is indicated in Figure 1, p. 10; the exact 

 locations are indicated on the maps provided in 

 Section IV, pp. 57-75. Field surveys were 

 conducted by the author on 10-13 June 1986, and 15 

 May, 28 May, 2 June, 8-11 June, and 13 and 29 

 September, 1987. 



