drought in the summer o^T 1967, only measurements 

 from 1969 are considered nearly average 

 (Lackschewitz , 1970). The daily mean minimum 

 temperature in January was -13.0"C (8.6'F); the 

 daily mean maximum temperature in July was 1^.7*C 

 <58.5»F). 



Data for precipitation are available for Lolo Pass 

 (1738 m. (5700 ft.) in elevation), approximately 

 3E km. (S0 mi.) northwest of St. Mary Peak. Over 

 17 years, from 19^8 to 196^, the average annual 

 precipitation was 13S cm. (52 in.); the maximum 

 amount was 178 cm. (70 in.), and the minimum 

 amount was 79 cm. (31 in.) (Lackschewitz, 1970). 



F. POPULATION DEMOGRAPHY AND BIOLOGY 



1. PHENOLOGY: Lesquerel la humi lis is in bloom from 



late June to mid-July, with some variation 

 depending on climatic conditions and exposure. 

 Fruiting extends from early July to early August. 



2. POPULATION SIZE AND CONDITION: Populations of L. 

 humi lis range in size from approximately 200-^00 

 to 1000+ individuals. The total number of plants 

 observed rangewide to date is approximately 1500- 



1800. Details regarding population size and 

 condition are as follows: 



OCCURRENCE NUMBER: 001 



SITE NAME: St. Mary Peak 



ACREAGE: 20 



POPULATION SIZE AND CONDITION: Est. 300-^00+ 



plants (1987 estimate), sparsely scattered in and 



above krummholz; recreational use of hiking trail 



and summit area is impacting site. 



OCCURRENCE NUMBER: 002 

 SITE NAME: East St. Joseph Peak 

 ACREAGE: 15 



POPULATION SIZE AND CONDITION: 200-^00 plants 

 (1970 estimate); site is located just west of 

 Wilderness Area boundary, not currently accessed 

 by maintained trail. 



OCCURRENCE NUMBER: 003 



SITE NAME: St. Joseph Peak 



ACREAGE: 25 



POPULATION SIZE AND CONDITION: More than 1000 



plants (1971 estimate); site is not currently 



accessed by maintained trail. 



