Juncus biflorus
Rush, Two-flowered rush Taxonomy
Synonyms: Juncus biflorus andinus 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, perennial Roots: adventitious, rhizomes Shoots: alternate leaf arrangment; simple leaf type; entire leaf margin; Parallel leaf venation; awl-shaped leaf shape Inflorescence: other Flowers: perfect; 3 merous; complete, regular; green, others; hypogynous ovary position Fruit: capsule Physiology: autotrophic Reproduction: sexual, vegetative
Ecology & Natural History
Habitat: Species is distributed in moist or wet meadows or shores. Also, it is found in prairie swales, sandy open ground, usually in acid soils, other wet habitats, moist sands. Species is distributed in wet meadows, prairie swales, and sandy open ground, usually in acid soils. ILPIN Notes: Species is occasional to common in southern 1/2 of Illinois. J. biflorus, as opposed to Juncus marginatus, with which this species often occurs, is: more robust with thicker, more branched and more knotty underground stems; found in wetter places. This variety has glomerules approximate and inflorescence conjested. Species is scattered in southern 1/2 of state. Functional Relationships:
Human Relationships:
Wildlife and Livestock Information:
Coefficient of Conservatism (C-value) [?] :
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