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Carex xerantica L. H. Bailey
Life   Plantae   Monocotyledoneae   Cyperaceae   Carex

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Carex xerantica L.H. Bailey
whitescale sedge

Image of Carex xerantica

General Information
Symbol: CAXE
Group: Monocot
Family: Cyperaceae
Duration: Perennial
Growth Habit : Graminoid
Native Status : AK   N
L48   N
Data Source and Documentation
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Native Status:
lower 48 status L48    Alaska status AK    Hawaii status HI    Puerto Rico status PR    Virgin Islands status VI    Navassa Island NAV    Canada status CAN    Greenland status GL    Saint Pierre and Michelon status SPM    North America NA   


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Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 1: 386. Provided by Kentucky Native Plant Society . Scanned by Omnitek Inc . Usage Requirements .




Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Liliopsida – Monocotyledons
Subclass Commelinidae
Order Cyperales
Family Cyperaceae – Sedge family
Genus Carex L. – sedge
Species Carex xerantica L.H. Bailey – whitescale sedge

Subordinate Taxa

This plant has no children

Legal Status

Threatened and Endangered Information:
This plant is listed by the U.S. federal government or a state. Common names are from state and federal lists. Click on a place name to get a complete protected plant list for that location.
Washington white-scaled sedge Sensitive

Wetland Status

Interpreting Wetland Status

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Flora of North America (CAXE)
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Source Large Mammals Small Mammals Water Birds Terrestrial Birds


Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Description of Values

Value Class Food Cover

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Following modified from Flora of North America
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Link to Flora of North America home
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FNA Vol. 23 Page 333, 345, 356, 357, 358 , 359 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 23 | Cyperaceae | Carex

125. Carex xerantica L. H. Bailey, Bot. Gaz. 17: 151. 1892.

Plants densely cespitose. Culms 15—70 cm. Leaves: sheaths adaxially white-hyaline, summits U-shaped, occasionally shortly prolonged beyond collar; distal ligules 0.8—1 mm; blades 3—5 per fertile culm, often folded, 3.5—20 cm × 1—3 mm. Inflorescences stiffly erect, open or spikes loosely aggregate, if open, sometimes arching, whitish to pale brown, 1.5—5 cm × 5—10 mm; proximal internode 5—10 mm; 2d internode 4—8 mm; proximal bracts scalelike to bristlelike, shorter than inflorescences. Spikes 3—5, distant, distinct, ovoid-ellipsoid, 7—14 × 3—8 mm, base tapered to attenuate, apex acute. Pistillate scales whitish to yellowish, with 1-veined, green to gold midstripe, or white almost throughout at maturity, ovate, 4.4—6 mm, longer and as wide as and concealing perigynia, margin hyaline, 0.3—0.7 mm wide, apex acute. Perigynia essentially erect, pale yellowish brown, often with green beak, 8—10-veined abaxially, veinless or indistinctly 8—10-veined adaxially, ovate to broadly ovate, plano-convex or thickly concavo-convex, 3.8—4.8 × 1.4—2.2 mm, 0.5—0.6 mm thick, margin flat, including wing 0.2—0.4 mm wide, ciliate-serrulate at least on distal body; beak white-hyaline at tip, flat, ± ciliate-serrulate to the bidentate apex, abaxial suture inconspicuous or white-hyaline, distance from beak tip to achene 1.4—2.2 mm. Achenes ovate-oblong, 1.7—2.1 × 1.2—1.4 mm, 0.5—0.6 mm thick. 2n = 68.

Fruiting late spring—early summer. Dry grasslands, rock outcrops, talus slopes; 300—2100 m; Alta., B.C., Man., Ont., Sask.; Minn., Mont., Nebr., N.Dak., S.Dak., Wyo.

Carex xerantica is a rather local, northern species of the Great Plains which has a distinctive pale silvery aspect to the inflorescences.

Much too broad a range has been ascribed previously to this taxon. Reports from the Rocky Mountains are based mostly on misidentifications of Carex petasata and C. tahoensis, both of which differ in having reddish brown pistillate scales and larger perigynia that are distinctly veined adaxially.

Updated: 2019-09-17 20:40:20 gmt
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