other codes : 



T Global rank for a subspecific taxon (subspecies or variety); 



appended to the global rank for the full species. 



Q Taxonomic questions or problems involved; more information needed. 



Appended to the global rank for the species, subspecies, or 

 variety in question. 



U.S. FISH AND WILDLIFE SERVICE STATUS 



In its most recent Notice of Review (U.S. Department of Interior 1990), 

 the U.S. Fish and Wildlife Service included one plant species that occurs in 

 Montana in Category 1, and 18 plant taxa in Category 2; in addition, 19 plant 

 taxa are currently placed in Category 3C. There are currently no plant taxa 

 in Montana that are listed as threatened or endangered under the federal 

 Endangered Species Act of 1973. 



The categories that are represented in Montana are defined as follows 

 (U.S. Department of Interior 1990): 



Category 1 (CI) - "Taxa for which the Service has on file enough 

 substantial information on biological vulnerability and threat(s) to 

 support proposals to list them as endangered or threatened species." 

 Howellia aquatilis is the only plant taxon in Montana that is currently 

 included in Category 1. 



Category 2 (C2) - "Taxa for which there is some evidence of 

 vulnerability, but for which there are not enough data to support 

 listing proposals at this time." The following 18 plant taxa occurring 

 in Montana are currently included in Category 2 (* indicates plants that 

 have recently been proposed for downlisting to Category 3C; it is 

 anticipated that the next Notice of Review will reflect these 

 recommendations) : 



Arabis fecunda 

 * Astraqalus barrii 

 * Astraqalus scaphoides 



Botrvchium crenulatum 



Botrychium paradoxum 

 * Calamaqrostis tweedyi 



Carex lenticularis var. dolia 



Cirsium lonqistvlum 



Claytonia lanceolata var. f lava 



Eriqeron lackschewitzii 



Erioqonum laqopus [ = E_^ x laqopus (J. Reveal, pers. comm.)] 



Grindelia howellii 



Lesquerella humilis 



Penstemon lemhiensis 



Rorippa calycina 



Shoshonea pulvinata 



Silene spaldinqii 



Trisetum orthochaetum 



