Bidens tripartita
Swamp tickseed Taxonomy
Synonyms: Bidens comosa Subspecific taxa: Classification:
Other taxonomic & nomenclature sources: USDA Plants;  ITIS;  The Plant List;  IPNI 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:Several authors have suggested that Bidens connata should be treaed as a part of Bidens tripartita, Origin: Native
Species Description
General: Dicot-herb, annual Roots: Shoots: opposite leaf arrangment; simple leaf type; serrate, lobed (pinnately), parted (pinnately) leaf margin; Pinnate leaf venation; linear, oblong, cordate leaf shape Inflorescence: head Flowers: perfect; 4 merous; complete, incomplete, regular, irregular; epigynous ovary position Fruit: achene Physiology: autotrophic Reproduction: sexual
Ecology & Natural History
Habitat: Species is distributed in sloughs, ditches, moist and weedy situations. ILPIN Notes: Disk flowers are perfect and fertile. Ray florets, when present, are sterile or rarely pistillate. Van Bruggen, Theodore. 1976. Vascular Plants of South Dakota. The Iowa State University Press, Ames, Iowa. 538 pp. Functional Relationships:
Human Relationships:
Wildlife and Livestock Information:
Coefficient of Conservatism (C-value) [?] :
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