2. State: In South Dakota, this species had a state rank of 

 "SU" (status undetermined) based on limited information, but 

 the 1994 field data provides the basis for assigning it a 

 state rank of S4 (potentially secure) . 



Geographical distribution 



1. Species range: Western 

 North Dakota to Montana, 

 Arizona and northwestern 

 Kansas. 



2. South Dakota distribution: 

 This species has only been 

 collected in Butte and Harding 

 counties in northwestern South 

 Dakota (Houtcooper et al . 

 1985) . 



3 . Occurrence in the study 

 area: This species was found 

 throughout the South Dakota 

 units at a total of ten 

 locations (including seven new 

 populations and numerous 

 subpopulations) across the Slim 

 Buttes, North and South Cave 

 Hills. It also occurs 

 throughout the Montana units of 

 the District. 



1495, ttupltipappus armerinide\ (Null.) Gray 



« ' : \ LAP — • 



Habitat 



1. Associated vegetation: The Haplopappus armerioides is 

 found at early successional stages of communities dominated by 

 Stipa comata - Carex f ilifolia , either at topographic breaks 

 or extremely exposed settings wanting in soil development. On 

 calcareous substrates, it is part of a discrete disclimax 

 community with the most abundant species including some 

 combination of Eriogonum pauciflorum . Astragalus 

 vexillif lexus , and Artemisia longifolia . Associated species 

 in the study area are listed below: 



Artemisia campestris 

 Artemisia longifolia 

 Astragalus gilviflorus 

 Astragalus vexillif lexus 

 Bouteloua gracilis 

 Calylophus serrulatus 

 Carex filifolia 

 Chamaerhodos erecta 

 Chrysothamnus nauseosus 



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