Cyperus bipartitus
Brook sedge Taxonomy
Synonyms: Cyperus rivularis, Cyperus rivularis elutus Subspecific taxa: Classification:
Other taxonomic & nomenclature sources: USDA Plants;  ITIS;  The Plant List;  IPNI Images
   
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Species Distribution
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County Map Legend
Absent: Not known from county Medium confidence: Medium or unknown confidence; often old records or unverifiable observations Medium-high confidence: Often observations by expert botanists High confidence: Often vouchered herbarium records Planted / introduced: Native species introduced outside historic range, or only in planted locations within county (e.g., restorations) Historic / extirpated: Only historic records for the species; likely extirpated (Note that this category is not yet functional) North American distribution maps for this species: FLNA;  USDA Plants;  BONAP;  BISON
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Species Status
Status/Listing: No Information Notes: Origin: Native
Species Description
General: Monocot, annual Roots: adventitious, fibrous Shoots: alternate leaf arrangment; simple leaf type; entire leaf margin; Parallel leaf venation; awl-shaped leaf shape Inflorescence: spike, head Flowers: perfect; 3 merous; incomplete, not petals, not sepals; hypogynous ovary position Fruit: achene Physiology: autotrophic Reproduction: sexual
Ecology & Natural History
Habitat: Species is distributed in swampy meadows, wet open sandy, gravelly or muddy bars along streams and spring branches, and moist places on limestone ledges along creeks. ILPIN Notes: Versus Cyperus diandrus, this species has styles that are included within the scales, or that project only up to 2 mm. These styles are usually deciduous. Mohlenbrock (ref. 8) lists 3 forms in Illinois. Species is found throughout state, rare in southern 1/3 - F. rivularis. Other 2 forms are more restricted. Functional Relationships:
Human Relationships:
Wildlife and Livestock Information:
Coefficient of Conservatism (C-value) [?] :
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