D I S C O V E R    L I F E   
Bee Hunt! Odonata Lepidoptera 
  HomeAll Living ThingsIDnature guidesGlobal mapperAlbumsLabelsSearch
  AboutNewsEventsResearchEducationProjectsStudy sitesHelp

Carex amphibola Steud.
Life   Plantae   Monocotyledoneae   Cyperaceae   Carex

Click on map for details about points.

IDnature guides

go to Discover Life's Facebook group

Following modified from Plants Database, United States Department of Agriculture
   Top | See original

http://plants.usda.gov/java/profile?symbol=CAAM8 ---> https://plants.usda.gov/java/profile?symbol=CAAM8
https://plants.usda.gov/java/profile?symbol=CAAM8 ---> http://plants.usda.gov/core/profile?symbol=CAAM8
http://plants.usda.gov/core/profile?symbol=CAAM8 ---> https://plants.usda.gov/core/profile?symbol=CAAM8
Link: Skip repetitive navigation links
USDA and NRCS Identifier NRCS Logo
USDA.gov Web Site PLANTS photo banner
PLANTS Home  about PLANTS  PLANTS Team  Partners of PLANTS  What  National Plant Data Team Web Site  Help using PLANTS  Contact PLANTS
 Search the PLANTS Web site
 Name Search

 State Search
 Advanced Search
 Search Help
 Alternative Crops
 Cover Crops
 Culturally Significant
 Distribution Update
 Fact Sheets & Plant Guides
 Introduced, Invasive, and Noxious Plants
 Threatened & Endangered
 Wetland Indicator Status
PLANTS Image Gallery
 50,000+ Plant Images
Download PLANTS data
 Complete PLANTS Checklist
 State PLANTS Checklist
 Advanced Search Download
 Symbols for Unknown Plants
 NRCS State GSAT Lists
 NRCS State Plants Lists
Related tools
 Crop Nutrient Tool
 Ecological Site Information System
 PLANTS Identification Keys
 Plant Materials Web Site
 Plant Materials Publications
 USDA Plant Hardiness Map
You are here: Home / Plant Profile

Carex amphibola Steud.
eastern narrowleaf sedge

Image of Carex amphibola

General Information
Symbol: CAAM8
Group: Monocot
Family: Cyperaceae
Duration: Perennial
Growth Habit : Graminoid
Native Status : CAN   N
L48   N
Data Source and Documentation
About our new maps
Plants-NRCS Logos
green round image for nativity Native blue round image for introduced Introduced ocre round image for introduced and nativity Both white round image for no status Absent/Unreported
image for native, but no county data Native, No County Data image for introduced, but no county data Introduced, No County Data both introduced and native, but no county data Both, No County Data
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   


click on a thumbnail to view an image, or see all the Carex thumbnails at the Plants Gallery

Robert H. Mohlenbrock. USDA NRCS. 1995. Northeast wetland flora: Field office guide to plant species . Northeast National Technical Center, Chester. Provided by USDA NRCS Wetland Science Institute (WSI). Usage Requirements .

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: 406. Provided by Kentucky Native Plant Society . Scanned by Omnitek Inc . Usage Requirements .

USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service. Provided by NRCS National Wetland Team . Usage Requirements .



Symbol Scientific Name
CAGRA Carex grisea Wahlenb. var. amphibola (Steud.) Kük.


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 amphibola Steud. – eastern narrowleaf 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.
New Jersey narrow-leaf sedge Endangered
New York narrow-leaved sedge Endangered

Wetland Status

Interpreting Wetland Status

North America
Atlantic and Gulf Coastal Plain FACW
Eastern Mountains and Piedmont FAC
Great Plains OBL
Midwest FAC
Northcentral & Northeast FAC

Related Links

More Accounts and Images
Flora of North America (CAAM8)
Integrated Taxonomic Information System (CAAM8)
Lady Bird Johnson Wildflower Center Native Plant Information Network (CAAM8)
USF Atlas of Florida Vascular Plants (CAAM8)
University of Tennessee Herbarium (Distribution) (CAAM8)
University of Wisconsin - Stevens Point Freckmann Herbarium (CAAM8)



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

 PLANTS Home | USDA.gov | NRCS | Site Map | Policies and Links
Accessibility Statement | Privacy Policy | Non-Discrimination Statement

Following modified from Flora of North America
   Top | See original

Link to Flora of North America home
All Floras       Advanced Search
FNA Vol. 23 Page 460 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 23 | Cyperaceae | Carex

304. Carex amphibola Steudel, Syn. Pl. Glumac. 2: 234. 1855.

Carex grisea Wahlenberg var. amphibola (Steudel) Kükenthal

Plants densely cespitose; rhizo1me internodes 1.2—2 mm thick. Culms dark purple-red to 0.3—2.4(—7.3) cm high or very rarely brown at base, 15—80 cm. Leaves: sheaths glabrous; blades green, widest blades (3.7—)4.4—7 mm wide, smooth abaxially. Inflorescences 0.48—0.93 of culm height; peduncles of lateral spikes glabrous or barely scaberulous; peduncles of terminal spikes 1.6—21(—37) mm, usually barely exceeding lateral spikes; proximal bract sheaths loose, glabrous abaxially, sheath front slightly concave to slightly convex, elongated 0.6—2.2(—5) mm beyond apex; ligules (1.8—)3.4—7.8(—12.9) mm; distal bract much exceeding terminal spike. Spike (3—) 4—5, distal 2—4 overlapping; lateral spikes pistillate, with 3—18 perigynia, 5—26 × 4.6—9.8 mm, ratio of spike length (in mm) to flower number = 1.3—1.9; terminal spikes 7—34 × 1.1—2.7 mm. Pistillate scales 3.7—8 × 1.2—2.4 mm, margins whitish and usually with red-brown speckles, entire, apex with awn 1.1—6 mm. Staminate scales 3.6—4.9 × 1.1—1.9 mm. Anthers 2—2.8 mm. Perigynia spirally imbricate, 52—64-veined, unwrinkled to wrinkled, oblong-lanceoloid to narrowly oblong-ovoid, obtusely triangular in cross section, 4.2—5(—5.2) × 1.5—1.9(—2.2) mm, (2.2—)2.5—3.1 times as long as wide, lustrous, base very gradually tapered, apex gradually tapered; beak absent or straight, 0—0.2 mm. Achenes broadly obovoid to oblong-obovoid, widest at 0.55—0.67(—0.7) of body length, (2.6—)2.8—3.4 × (1.3—)1.5—1.7(—1.8) mm, loosely enveloped by perigynia; stipe straight, (0.3—)0.4—0.6 mm; beak straight, 0.3—0.6 mm.

Fruiting spring—early summer. Mesic deciduous forests; usually in acidic loams on flood plains, slopes above streams, and uplands; 10—1000 m; Ont.; Ala., Ark., Conn., Del., D.C., Ga., Ill., Ind., Ky., La., Md., Mass., Mich., Miss., Mo., N.J., N.Y., N.C., Ohio, Okla., Pa., S.C., Tenn., Tex., Va., W.Va.

The wide-ranging, habitat generalist Carex amphibola is the most common member of Carex sect. Griseae. It grows with many other members of the section, most often C. bulbostylis, C. corrugata, C. glaucodea, C. grisea, C. oligocarpa, and C. planispicata.

Updated: 2019-09-23 03:34:55 gmt
Discover Life | Top
© Designed by The Polistes Corporation