Cyperaceae taxon details
Carex klamathensis B.L.Wilson & Janeway
1676554 (urn:lsid:marinespecies.org:taxname:1676554)
accepted
Species
terrestrial
Wilson, et. al. (2007). A new Carex from Orergon and California. <em>Journal of the Botanical Research Institute of Texas.</em> 1(1): 69-78., available online at https://www.biodiversitylibrary.org/page/34395182#page/77/mode/1up
page(s): 71 [details]
page(s): 71 [details]
Holotype OSC, geounit Oregon
Holotype OSC, geounit Oregon [details]
Description Plant rhizomatous, the rhizomes whitish to medium brown, occasionally dull orange brown, paler than the dark to medium...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from J. Bot. Res. Inst. Texas 1(1): 71 (69-77; figs. 1 [map], 2-3, 4B). 2007...
Description Plant rhizomatous, the rhizomes whitish to medium brown, occasionally dull orange brown, paler than the dark to medium brown (rarely straw-colored) scales, slender, 1–2(–2.5) mm wide exclusive of sheathing scales. Shoot bases medium to dark brown, phyllopodic. Leaves glaucous with the sheaths basally white, with lower surface densely papillose between and sometimes over the veins, 18 to 50 cm long, the wider leaves 2–6 mm wide (average 3.8 mm). Ventral surface of leaf sheath hyaline, the mouth shallowly U-shaped. Culms 30–100 cm long, scabrous or not, longer than the leaves, erect at anthesis but sometimes bending over by the time the perigynia ripen. Inflorescence 5–23 cm long (average 14.5 cm), with 1–2(–4) lateral spikes. Bract of lowest spike 3–14 cm long (average 9.1 cm) including a sheath (0.8–)1.5–4(–8) mm long, 0.33 to 1.5 (average 0.67) times as long as the inflorescence. Lateral spikes pistillate, usually one per node, (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 as close as 0.3 cm below the terminal spike. Perigynia moderately crowded in the spike but the lowermost sometimes remote, the internodes in the middle of the spike 0.1–1.2 mm (average 0.5 mm) long. Terminal spikes all staminate in most populations, but in some populations, including those in California and on Sexton Mountain, Oregon, these may be gynecandrous or, less often pistillate, androgynous, or with staminate and pistillate flowers mixed. Staminate terminal spikes 1.3–2.7 cm (average 1.8 cm) long, 2–5 mm (average 3.6 mm) wide, 3.7–9.5 (average 5.3) times as long as wide, with 50–190 (average 112) flowers. Lowest staminate scale yellowish to reddish brown, paler near the midrib, acute to obtuse, often awned, 2.2–5.1 mm (average 2.3 mm) long excluding awn, the awn if present 0.3–3 mm (average 1.1 mm) long. Other staminate scales similar in color to the lowest, with the apex rounded and sometimes mucronate. Pistillate scales 3-nerved (the lateral nerves sometimes faint), 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, the apex rounded or obtuse, less often acute, sometimes mucronate to awned, the awn if present, up to 1.5 mm long. Perigynia obovate to elliptic, 1.7–3.6 mm (average 2.9 mm) long, (0.8–)1.2–1.6(–1.8) mm (average 1.4 mm) wide, 1.6–2.4 (average 2.1) times as long as wide, light green, tan, or whitish, sometimes marked with dark brown distally, papillose particularly toward the beak or rarely smooth, the base succulent when fresh and drying withered, the beak usually curved, the distance from beak tip to top of achene (0.1–)0.4–0.7(–1) mm. Stigmas 3, or occasionally 2 on 0–5%(–15%) of flowers that have viable achenes. Achene greenish yellow when young, ripening dark brown, trigonous, or lenticular if stigmas 2, 1.6–2.7 mm (average 2.2 mm) long including stub at persistent base of deciduous style, 0.7–1.7 mm (average 1.2 mm) wide. Achene width/length ratio 0.67(0.44–0.88). Anthers 2.5–3.5 mm. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from J. Bot. Res. Inst. Texas 1(1): 71 (69-77; figs. 1 [map], 2-3, 4B). 2007...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from J. Bot. Res. Inst. Texas 1(1): 71 (69-77; figs. 1 [map], 2-3, 4B). 2007 [10 Aug 2007] to J. Bot. Res. Inst. Texas 1: 71 (2007), information provided by Alan E. on email Jun. 07 2021 More details coul [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Carex klamathensis B.L.Wilson & Janeway. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1676554 on 2025-09-13
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Nomenclature
original description
Wilson, et. al. (2007). A new Carex from Orergon and California. <em>Journal of the Botanical Research Institute of Texas.</em> 1(1): 69-78., available online at https://www.biodiversitylibrary.org/page/34395182#page/77/mode/1up
page(s): 71 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 71 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
Present Inaccurate Introduced: alien Containing type locality
Holotype OSC, geounit Oregon [details]
From editor or global species database
Description Plant rhizomatous, the rhizomes whitish to medium brown, occasionally dull orange brown, paler than the dark to medium brown (rarely straw-colored) scales, slender, 1–2(–2.5) mm wide exclusive of sheathing scales. Shoot bases medium to dark brown, phyllopodic. Leaves glaucous with the sheaths basally white, with lower surface densely papillose between and sometimes over the veins, 18 to 50 cm long, the wider leaves 2–6 mm wide (average 3.8 mm). Ventral surface of leaf sheath hyaline, the mouth shallowly U-shaped. Culms 30–100 cm long, scabrous or not, longer than the leaves, erect at anthesis but sometimes bending over by the time the perigynia ripen. Inflorescence 5–23 cm long (average 14.5 cm), with 1–2(–4) lateral spikes. Bract of lowest spike 3–14 cm long (average 9.1 cm) including a sheath (0.8–)1.5–4(–8) mm long, 0.33 to 1.5 (average 0.67) times as long as the inflorescence. Lateral spikes pistillate, usually one per node, (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 as close as 0.3 cm below the terminal spike. Perigynia moderately crowded in the spike but the lowermost sometimes remote, the internodes in the middle of the spike 0.1–1.2 mm (average 0.5 mm) long. Terminal spikes all staminate in most populations, but in some populations, including those in California and on Sexton Mountain, Oregon, these may be gynecandrous or, less often pistillate, androgynous, or with staminate and pistillate flowers mixed. Staminate terminal spikes 1.3–2.7 cm (average 1.8 cm) long, 2–5 mm (average 3.6 mm) wide, 3.7–9.5 (average 5.3) times as long as wide, with 50–190 (average 112) flowers. Lowest staminate scale yellowish to reddish brown, paler near the midrib, acute to obtuse, often awned, 2.2–5.1 mm (average 2.3 mm) long excluding awn, the awn if present 0.3–3 mm (average 1.1 mm) long. Other staminate scales similar in color to the lowest, with the apex rounded and sometimes mucronate. Pistillate scales 3-nerved (the lateral nerves sometimes faint), 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, the apex rounded or obtuse, less often acute, sometimes mucronate to awned, the awn if present, up to 1.5 mm long. Perigynia obovate to elliptic, 1.7–3.6 mm (average 2.9 mm) long, (0.8–)1.2–1.6(–1.8) mm (average 1.4 mm) wide, 1.6–2.4 (average 2.1) times as long as wide, light green, tan, or whitish, sometimes marked with dark brown distally, papillose particularly toward the beak or rarely smooth, the base succulent when fresh and drying withered, the beak usually curved, the distance from beak tip to top of achene (0.1–)0.4–0.7(–1) mm. Stigmas 3, or occasionally 2 on 0–5%(–15%) of flowers that have viable achenes. Achene greenish yellow when young, ripening dark brown, trigonous, or lenticular if stigmas 2, 1.6–2.7 mm (average 2.2 mm) long including stub at persistent base of deciduous style, 0.7–1.7 mm (average 1.2 mm) wide. Achene width/length ratio 0.67(0.44–0.88). Anthers 2.5–3.5 mm. [details]Taxonomic remark Source in seed data: wcs Update namepublishedIn from J. Bot. Res. Inst. Texas 1(1): 71 (69-77; figs. 1 [map], 2-3, 4B). 2007 [10 Aug 2007] to J. Bot. Res. Inst. Texas 1: 71 (2007), information provided by Alan E. on email Jun. 07 2021 More details coul [details]
