Table 1. Primary target species for sensitive plant inventory on 

 BLM lands in the Centennial Valley, Beaverhead County, MT. 



SENSITIVE PLANTS OF THE CENTENNIAL VALLEY* 

 Montana Natural Heritage Program 

 Aquileqia forinosa * 



Astragalus argophyllus var . argophyllus 

 Astragalus ceraunicus var. apus * 

 Astragalus lentiginosus * 

 Astragalus leptaleus 

 Astragalus terminalis* 

 Atriplex truncata 

 Balsamorhiza macrophylla 

 Carex multicostata 

 Carex parryana ssp. idahoa 

 Carex vallicola 

 Castilleja rustica 

 Cirsium subniveum 

 Cryptantha fendleri* 

 Downinqia laeta 

 Elymus flavescens 

 Erigeron gracilis 



Eriogonum ovalifolium var nevadense * 

 Gentiana aguatica 

 Gentianopsis simplex 

 Haplopappus nanus 

 Helenium hoopesii 



Ipomopsis conqesta ssp. crebrif olia 

 Lesquerella sp. novum * 

 Oenothera pallida var. idahoensis * 

 Orobanche corymbosa 

 Orogenia fusif ormis 

 Potentilla plattensis 

 Primula alcalina 

 Ranunculus jovis 

 Senecio debilis 

 Sphaeralcea munroana * 

 Stellaria crassifolia 

 Thalictrum alpinum 

 Thelypodium paniculatum * 

 Thelypodium sagittatum var. sagittatum 



* This list represents a compilation of all state species of 

 concern documented within the study area as of 24 March 1993, 

 which were the primary target species for inventory. Those which 

 had been documented on BLM lands prior to this study are marked 

 by an asterisk (*), and those species which were proposed for BLM 

 status in Montana (sensitive or watch; BLM draft list of March 

 1993) are bold-faced. 



In addition, five more rare species are reported from the 

 area by various sources, with incomplete information: Al 1 ium 

 acuminatum from the Centennials area by Lowry (1979), Castilleja 

 gracillima from the Centennials area by Lowry (1979), Kobresia 

 simpliciuscula from Odell Canyon by Lowry (1979), Ptervxia 

 hendersonii ( Cymopteris hendersonii ) reported from Odell Canyon 

 and Sheep Mountain - herbarium records needed from RM, and 

 Stephanomeria spinosa from Red Rock Pass - source unknown. 



