MONTANA FIELD GUIDE™

DRAFT: Requesting feedback on the 2026 revised rank, factors, and State Rank Reason outlined below and in the Conservation Status Rank Report. Trichophorum alpinum is rare in Montana, where it is known from several montane to lower alpine habitats in northwest Montana, mostly within Glacier National Park. Several populations are in remote areas, which limits the potential for negative impacts. No significant and widespread threats to the species are known except for potential impacts at one population that is adjacent to a trail, which makes it susceptible to trampling and trail maintenance activities. Climate change may also have negative impacts on some populations. Population levels are imprecisely known, and trends are unknown though populations have likely been relatively stable in the recent past or experienced only minor declines. One population is known only from a historical collection. Climate change may negatively affect this species over the next several decades. However, the timing and magnitude of potential impacts are largely unknown. Although climate change is listed as a potential threat to the species, it does not affect the overall threat rank or scoring, or the final subnational rank. Survey and monitoring data are needed to be able to more precisely determine population levels, assess condition and for assessing population trends. Surveys in potentially suitable habitat may document additional occurrences.