[Gentians: The Genus Gentiana East of the Cascade
Mountains of Oregon and Washington]
Pleated Gentian, Prairie Gentian, Rocky Mountain Gentian, Trapper's Gentian
Gentiana affinis
Synonyms: Dasystephana affinis, Dasystephana interrupta, Gentiana affinis ssp. ovata, Gentiana affinis var. bigelovii, Gentiana affinis var. forwoodii, Gentiana affinis var. major, Gentiana affinis var. oregana, Gentiana affinis var. ovata, Gentiana affinis var. parvidentata, Gentiana bigelovii, Gentiana forwoodii, Gentiana interrupta, Gentiana oregana, Gentiana rusbyi, Pneumonanthe affinis, Pneumonanthe bigelovii
The photo above shows a view of the flowers of pleated gentian as seen along forest road #3925, about one mile east of US Highway 395 in the Malheur N.F........July 30, 2006.
Characteristics:
Habitat:
Pleated gentian may be found in moist to dry meadows or in damp soils from the valleys and foothills to well up in the mountains.
Range:
Pleated gentian may be found east of the Cascade crest from British Columbia south through Washington and south-central and southwestern Oregon to California and Arizona and eastward to the Rocky Mountains where it can be found between Alberta in the north and northern Mexico.
The photo above shows a view of the upper stem and flowers of pleated gentian as seen along forest road #3925, about one mile east of US Highway 395 in the Malheur N.F........July 30, 2006.
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Pleated gentian in bud in grasslands in deeper, drier soils towards the edges of Summit Prairie, Malheur National Forest........August 20, 2011.
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Young, leafy stems of pleated gentian (left) two months prior to blooming. Photographed at Summit Prairie, Malheur National Forest.........May 28, 2014. Pleated gentian in bloom in Summit Prairie, Malheur National Forest........August 10, 2015.
The photo above shows a view of the stem and unopened flowers of pleated gentian as seen above Fish Lake on the Steens Mt. of southeastern Oregon.......July 29, 2004.
Paul Slichter