Bryophytes are land plants without vascular tissue, and they form the sister lineage to all other land plants (flowering plants, gymnosperms, ferns, etc.). Bryophyte distributions and abundance data is grossly underrepresented in floristics studies throughout the United States. Plant conservation efforts fall short if they do not also include bryophyte population distributions and abundance data, and so efforts to understand non-vascular plant distributions in the state of Washington is underway. The increasing occurrence of wildfires in the Pacific Northwest reinforces the importance of knowing what bryophyte microhabitats are present so that management plans can be designed accordingly. The Gifford Pinchot National Forest covers 1.3 million acres and extends from Mt. Rainer National Park to the Columbia River. Because the Gifford Pinchot National Forest has such a wide range in the western region of Washington, there is a substantial amount of recorded flora present in the forest. However, there are many sites still lacking bryophyte collection data, particularly in the designated wilderness areas of the forest. This study will focus on the Indian Heaven Wilderness, located in the southern area of the Gifford Pinchot National Forest, which encompasses land that has been utilized by the area’s Native peoples for over 9,000 years. The Indian Heaven Wilderness features many meadows and plateaus of a consistent 4,500 ft in elevation. A survey of the bryophytes in the Indian Heaven Wilderness could add previously unrecorded species for the Gifford Pinchot National Forest, as well as for this part of Washington. This study aims to establish a preliminary checklist of the bryophytes in the Gifford Pinchot National Forest based on previous and new data. The checklist will also feature a dichotomous key for the taxa represented.