C. HABITAT ,^ . . 

 The Limekiln Canyon site is on a small, seasonally moist 

 terrace at 5,640 ft. elevation with vegetation dominated by 

 Artemisia tridentata and Agropyron smithii. The site was 

 weedy and impacted by livestock. The Pileup Canyon site was 

 on dry stony slopes (7,500 ft. elevation) in the partial shade 

 of an undisturbed Cercocarpus ledifolius/ Agropyron spicatum 

 community. Underlying rock type at both sites is limestone. 



D. POPULATION BIOLOGY ^ ,nn c,nn 

 The Limekiln population was estimated to consist of 100-500 

 plants covering 2-10 acres. The Pileup population was 

 estimated at less than 100 plants covering five acres. 

 Hitchcock and Cronquist (1964) state this species sometimes 

 becomes weedy, but the populations located here were small. 

 The plants were mainly in fruit when the occurrences were 

 discovered in early June (Limekiln Canyon) and mid-July 



(Pileup Canyon) . 



E. MANAGEMENT CONSIDERATIONS 



H virgata is now known from six locations in Montana, at tar 

 corners of the state. Populations are small, but the species 

 is in partially disturbed habitat in three of the six sites, 

 and appears to be adventive in at least one of these. It is 

 an early-blooming plant that may be more common than is 

 currently known. It should continue to be tracked by the 

 Montana Natural Heritage Program as "Status Undetermined 

 (SU) , but is not appropriate for listing as sensitive by the 

 BLM at least until further information on distribution has 

 been gathered. 



Haplopappus macronema Gray ssp. linearis Rydb. 



Linear-leaved discoid goldenweed 



A. DESCRIPTION 



1. General description: a low shrub in the Asteraceae 

 (sunflower family). The leaves are long and narrow and borne 

 on branches covered with white wooly hairs which also bear 

 flower heads. 



2. Technical description (quoted from Hartman et al. 1991): 



Low, rounded, fragrant shrub 0.5-2 dm tall with numerous, 

 usually procumbent, occasionally erect stems radiating 

 from near base. Twigs tough, very leafy, densely white- 

 tomentose, becoming glandular-puberlent under the heads. 

 Leaves mostly linear, 1-3 cm long, 1-2.5 mm wide, 

 canescent or tomentose or not. Heads solitary or few on 

 each branch, turbinate or campanulate ; involucre 8-15 mm 

 high, glandular-puberlent, the bracts not much imbricate 



