[Sedges: The Genus Carex East of the Cascade Mountains of Oregon and Washington]

The photo above shows Presl's sedge as seen on volcanic sand slopes of Mt. Hood about one-third mile east of Timberline Lodge .........August 29, 2008. The leaves of Eucephalus ledophyllus can be seen in the foreground at the base of the sedge.

The photo above shows a close-up of the inflorescence of Presl's sedge as seen in sandy soils at the junction of the Round the Mt. Trail #9 and South Climb Trail #183 in the Mt. Adams Wilderness...........September 5, 2008.

The photo above shows a close-up of the winged perigynia of Presl's sedge as seen in sandy soils at the junction of the Round the Mt. Trail #9 and South Climb Trail #183 in the Mt. Adams Wilderness...........September 5, 2008.

The photo above shows a close-up of the inflorescence of Presl's sedge as seen on volcanic sand slopes of Mt. Hood about one-third mile east of Timberline Lodge ...........August 29, 2008.

The photo above shows another close-up of the inflorescence of Presl's sedge as seen on Mt. Hood about one-third mile east of Timberline Lodge ...........August 29, 2008.

The photo above shows a close-up of a portion of one spike of Presl's sedge (giving a good view of the green- and brown-striped scales) as seen on Mt. Hood about one-third mile east of Timberline Lodge ..........August 29, 2008.

The photo above shows a close-up of the flat basal leaf of Presl's sedge as seen on Mt. Hood about one-third mile east of Timberline Lodge ..........August 29, 2008.

The photo above shows the dense, head-like inflorescence of Presl's sedge. The plants at this location have no subtending bract below the head. Photographed along the Shorthorn Trail #16 in meadows along Shorthorn Creek in the Mt. Adams Wilderness..........August 22, 2008.

The photo above shows the dense, head-like inflorescence of Presl's sedge. Photographed along the Shorthorn Trail #16 in meadows along Shorthorn Creek in the Mt. Adams Wilderness...........August 22, 2008.

The 2 photos above show close-ups of the perigynia and their subtending scales of Presl's sedge. The lower photo gives an indication of the profile of the perigynia of this species. Photographed along the Shorthorn Trail #16 in meadows along Shorthorn Creek in the Mt. Adams Wilderness..........August 22, 2008.

The photo above shows Presl's sedge as seen in wet meadows along the Shorthorn Trail #16 in meadows along Shorthorn Creek in the Mt. Adams Wilderness...........August 22, 2008.

The photo above shows another view of Presl's sedge as seen in wet meadows along the Shorthorn Trail #16 in meadows along Shorthorn Creek in the Mt. Adams Wilderness.........August 22, 2008.

The 3 photos above show close-up views of Presl's sedge as seen at the junction of the Pacific Crest Trail and Divide Camp Trail #112 on the western slopes of Mt. Adams............September 18, 2008.

Additional photos of what may be Presl's sedge as seen in gravelly alpine soils at the base of the Mazama Glacier moraine on Mt. Adams........July 19, 2009.