Ipomopsis conqesta ssp crebif olia (Hook.) Grant 

 I I. SPECIES INFORMATION 



A. CLASSIFICATION 



1. SCIENTIFIC NAME: IpoTOopsis conqesta ssp crebif olia 



2. COMMON NAME: Ballhead Gilia 



3. FAMILY: Polemoniaceae 



A. GENUS: According to Hitchcock and Cronquist (1973), 

 there are about 40 or 50 species, native to North 

 and South America, chiefly in western United Stated, 

 especially in California. The segregate genus 

 Ipomopsis , as recently delimited by Grant, seems to 

 be scarcely definable on a morphological basis. 



5. SPECIES: Ipomopsis conqesta ssp crebifolia is found 

 from southwestern Montana to northern and western 

 Wyoming. 



B. PRESENT LEGAL OR OTHER FORMAL STATUS 



1. BUREAU OF LAND MANAGEMENT: Ipomopsis conqesta 



ssp crebifolia is proposed as a sensitive species 

 for the Dillon Resource Area. Documentation of it 

 on many BLM lands in this study provides basis for 

 recommending that it be dropped from further 

 consideration. 



2. STATE: Ipomopsis conqesta ssp crebifolia 



is currently listed by the Montana Natural Heritage 

 Program as "critically imperiled because of extreme 

 rarity (5 or fewer occurrences, or very few 

 remaining individuals) , or because of some factor 

 of its biology making it especially vulnerable to 

 extinction" (state rank = SI) . Documentation of it 

 in this study provides basis for recommending that 

 it be changed to S3, but still tracked as a limited 

 distribution species. 



C. DESCRIPTION 



1. GENERAL NONTECHNICAL DESCRIPTION: Ipomopsis COnqesta 

 ssp. crebifolia is a perennial herb arising from a 

 taproot. The leaves are linear and entire. The 

 flowers are white and congested. The plants are 

 found on area of soil disturbances such as; slumps, 

 road cuts or eroded stream banks. ' 



