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Klamath Sedge
Carex klamathensis

About Klamath Sedge (Carex klamathensis) Carex klamathensis is a rare species of sedge known by the common name Klamath sedge. It is known from 15 or fewer populations in southern Oregon and three populations in the Klamath Region of northern California. It was described to science only in 2007. Its habitat includes fens and other wet habitat, on serpentine soils. This sedge grows from a long rhizome bearing clumps of stems. The leaves are glaucous, 2-6 mm wide, with papillae between and sometimes over the veins. The inflorescence consists of 2-3(-5) spikelets. The terminal spikelet is usually staminate, occasionally androgynous, gynecandrous, or pistillate. Staminate terminal spikes are 1. 3-2. 7 cm long, 2-5 mm wide, with 40-190 flowers. Lateral spikelets are pistillate, (0. 6-)1. 5-2. 5 cm long, 4-7 mm wide, the uppermost usually 1. 5-6 cm or more below the terminal spike, but sometimes attached as close as 0. 3 cm below the terminal spike. Pistillate flower bracts are reddish brown, dark brown, or rarely gold, the midrib and surrounding area green, white, or light brown, the edges sometimes pale, 1. 9-2. 8 mm long excluding awn.
Plant Description
Plant Type

Flower Color

Native Status
Natural Setting
Elevation ?
2924' - 5284'

Annual Precip. ?
35.9" - 68.4"

Summer Precip. ?
0.68" - 2.02"

Coldest Month ?
36.2° F - 47.4° F

Hottest Month ?
56.3° F - 68.5° F

Humidity ?
2.58 vpd - 19.72 vpd

Landscaping Information
Nursery Availability
Never or Almost Never Available

Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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