hydric community development. 



By this method, nine areas were identified and subsequently searched 

 for Cypripedium calceolus. Four were within a 1 mile radius of 

 Anderson Hill, and five were located to the north (Table 1; Figure 4). 

 In addition, potential habitat was scanned in the course of travels, 

 including First Chance Gulch and Cayuse Gulch, without finding 

 suitable habitat. 



IV. BACKGROUND SPECIES INFORMATION 



A. CLASSIFICATION 



1. SCIENTIFIC NAME: Cypripedium calceolus L. 



2. COMMON NAME: Small yellow lady • s-slipper 



3. FAMILY: Orchidaceae (Orchid Family) 



4. GENUS: The genus Cypripedium contains thirty-five North 

 American species (Luer 1975) . The genus is distributed 

 mainly in temperate and cold regions of North America, Asia 

 and Europe (Luer 1975) . 



5. SPECIES: Cypripedium calceolus is one of four species 

 reported for the genus; the other species include C. 

 fasciculatum , C. montanum and C. passerinum (Dorn 1984) . 



6. VARIETY: Cypripedium calceolus var. parviflorum (Salisb.) 

 Fern. is one of three varieties, the only one known in 

 Montana. It is refered to in Dorn (1984) without the 

 variety distinction. The Anderson Hill specimen was 

 originally identified as Cypripedium calceolus L. , and 

 annotated to C. c. var. parviflorum by W. Fertig in 1987. 

 The Anderson Hill specimen had questions noted by Fertig in 

 1986 whether it might appropriately be called C. c. 

 pubescens , a variety which is reported northward and 

 southward in the Rocky Mountains. While it has the small 

 flower size of C. c. var. calceolus . the perianth appears to 

 be yellowish green as in C. c. var. pubescens rather than 

 reddish brown. Verification of the Anderson Hills specimen 

 by L. Macgrath, an expert on Cypripedium calceolus 

 varieties, is recommended to settle the matter. These 

 varieties are treated as separate species in Kartesz and 

 Kartesz (1985) though regional floristic references for 

 Montana all treat them as varieties. 



B. PRESENT LEGAL OR OTHER FORMAL STATUS 

 1. FEDERAL STATUS 



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



