METHODS: Collections of C. longistylum were made by the 

 author from twelve locations in the Little Belt and Big Belt 

 mountains, and one collection of C. hookerianum from the 

 Sawtooth Range in 1991. Duplicates were taken at most 

 sites, however, slow drying caused molding in some cases so 

 that only five locations had one (or two) duplicate 

 specimens. These specimens, along with three collected in 

 1990, and four (one Cirsium hookerianum from the Sawtooth 

 Range, and three Cirsium lonqistylum from the Little Belt 

 and Castle mountains) collected by Dana Field and Wayne 

 Phillips (Lewis & Clark National Forest) were sent to Dr. 

 Arthur Cronguist for verification in December of 1991. 



RESULTS AND CONCLUSIONS: Based on this material. Dr. 

 Cronguist (1992) stated that he now felt that "C. 

 lonqistylum was a "good" species of limited distribution in 

 Montana." He also felt that "it probably hybridizes with C. 

 hookerianum and possibly C. scariosum Nutt.," and that 

 "hybrids are best identified in the field." Collections and 

 subseguent annotations are as follows: 



Submitted as Cirsium hookerianum Nutt. 

 Roe. Lisa, S. (464) 1991., NW side of Flesher Pass 

 Field. D. (14) 1991., Sawtooth Range, Slide Rock Point 



Submitted as Cirsium lonqistylum Moore & Frankton 



Schassberqer. Lisa A. (403) 1990. Little Belt Mtns. Belt Park 

 Annotated JAN 1992 by A. Cronguist as C. hookerianum Nutt. 



Schassberqer. Lisa A. (409) 1990. Little Belt Mtns., Hay Coulee 



Roe. Lisa. S. (465) 1991. Little Belt Mtns., Neihart Cemetery 



Roe. Lisa. S. (466) 1991. Little Belt Mtns., Harley Creek 

 Possible hybrid (Cronguist 1992) 



Roe. Lisa. S. (467) 1991. Little Belt Mtns., Kings Hill Pass 

 Possible hybrid (Cronguist 1992) 



Roe. Lisa. S. (468) 1991. Little Belt Mtns., Deadman Creek 



Roe. Lisa. S. (469) 1991. Little Belt Mtns., Birch Creek 



Roe. Lisa. S. (470) 1991. Big Belt Mtns., Duck Creek Pass 



Roe. Lisa. S. (472) 1991. Little Belt Mtns., Hay Canyon 



