Taxon Report

Carex tiogana D.W. Taylor & J. Mastrogiuseppe

Tioga Pass sedge

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Taxon Summary

Carex tiogana, commonly known as Tioga Pass sedge, is a perennial herb in the Cyperaceae that is found in California and elsewhere. It occurs within Meadows and seeps (lake margins, and mesic), growing at elevations from 3100 to 3300 meters. Carex tiogana is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.


  Classification

Scientific Name:
Carex tiogana D.W. Taylor & J. Mastrogiuseppe
Common Name:
Tioga Pass sedge
Family: Cyperaceae
Element Code: PMCYP03GP0
USDA Plants Symbol: CATI5
Synonyms/Other Names:

Ecology and Life History

Lifeform: perennial herb
Blooming Period: Jul-Aug Jul-Aug
Elevation: 3100-3300 (10170-10825)
General Habitats: Meadows and seeps
Microhabitat:
Microhabitat Details:

Occurrence Data from the CNDDB

Total Occurrences: 7
Element Occurrence Ranks:
   Excellent (A) 0
   Good (B) 0
   Fair (C) 0
   Poor (D) 1
   None (X) 0
   Unknown (U) 6
California Endemic:  False
California Counties and Islands: Name (Code)
Mono (MNO), Tuolumne (TUO)
Quads: Name (Quad Code)
Dunderberg Peak (3811913), Koip Peak (3711972)

Threat List Data from the CNDDB

Threat List Total: 1
EOs with Threat Listed: Total EOs % of EOs
1 14 %
Foot traffic/trampling 1 14%

Notes

Known from only 4 small occurrences. Threatened by recreational activities, especially foot traffic. See Novon 9(1):120 (1999) for original description.
Threats:
Taxonomy:
Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 1 February 2025].