Image of Cyperus flavescens var. rehmannianus (C. B. Clarke) Kük.

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Yellow Flat Sedge

Cyperus flavescens L.

Alison Young cc-by-nc-4.0

Cyperus flavescens (Yellow Flat Sedge) is a species of annual herb in the family sedges. They are native to Pampa, Amazônia, Roraima, Mato Grosso Do Sul, Rio De Janeiro, Canada, ParaíBa, Caatinga, Bahia, SãO Paulo, The Contiguous United States, Piauí, GoiáS, Minas Gerais, Alagoas, Santa Catarina, Pernambuco, Cerrado, Mata Atlântica, Espirito Santo, Puerto Rico, Rio Grande Do Norte, Tocantins, Sergipe, Mato Grosso, Ceará, and Paraná. They have red flowers. Individuals can grow to 2 feet.

URI: http://purl.obolibrary.org/obo/FLOPO_0980071
Definition: Of plant duration, a plant whose life span ends within one year after germination, e.g. a winter annual germinating in the autumn and flowering in the spring (esp. in Mediterranean climates), approximately synonymous to therophyte, c.f. biennial, ephemeral, perennial, c.f. also of flowering with respect to architecture, hapaxanthic, monocarpic, pleonanthic.
Attribution: Stevens, P. F. (2001 onwards). Angiosperm Phylogeny Website. Version 12, July 2012. Glossary, http://www.mobot.org/mobot/research/apweb/top/glossarya_h.html#annual

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URI: http://purl.obolibrary.org/obo/FLOPO_0022142
Definition: whole plant herbaceous

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URI: https://www.wikidata.org/entity/Q184382

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URI: https://www.wikidata.org/entity/Q2841453

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URI: http://www.geonames.org/3662560

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URI: https://www.geonames.org/3457415

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URI: https://www.geonames.org/3451189

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URI: http://www.geonames.org/6251999

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URI: http://www.geonames.org/3393098

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URI: https://www.wikidata.org/entity/Q375816

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URI: https://www.geonames.org/3471168

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URI: https://www.geonames.org/3448433

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URI: http://www.wikidata.org/entity/Q578170

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URI: http://www.geonames.org/3392213

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URI: http://www.geonames.org/3462372

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URI: https://www.geonames.org/3457153

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URI: http://www.geonames.org/3408096

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URI: https://www.geonames.org/3450387

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URI: http://www.geonames.org/3392268

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URI: https://www.wikidata.org/entity/Q278512
Definition: tropical savanna ecoregion of Brazil

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URI: https://www.wikidata.org/entity/Q477047

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URI: https://www.geonames.org/3463930

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URI: http://www.geonames.org/4566966

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URI: http://www.geonames.org/3390290

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URI: http://www.geonames.org/3474575

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URI: http://www.geonames.org/3447799

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URI: https://www.geonames.org/3457419

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URI: http://www.geonames.org/3402362

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URI: https://www.geonames.org/3455077

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URI: http://purl.obolibrary.org/obo/PATO_0000322
Definition: A color hue with high wavelength of the long-wave end of the visible spectrum, evoked in the human observer by radiant energy with wavelengths of approximately 630 to 750 nanometers.
Attribution: [database_cross_reference: Dictionary:http://dictionary.reference.com/]

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EOL has data for 68 attributes, including:

after harvest regrowth rate
- URI: http://eol.org/schema/terms/AfterHarvestRegrowthRate
- Definition: Indicates the relative rate of regrowth of a herbaceous plant after a harvest of above ground herbage.
- Attribution: USDA PLANTS database Characteristics Data Fields. http://plants.usda.gov/charinfo.html
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slow
- URI: http://purl.obolibrary.org/obo/PATO_0000911
- Definition: Decreased rate. A rate which is relatively low.
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anaerobic soil tolerance
- URI: http://eol.org/schema/terms/AnaerobicSoilTolerance
- Definition: The relative tolerance of the plant to anaerobic soil conditions.
- Attribution: USDA PLANTS database Characteristics Data Fields. http://plants.usda.gov/charinfo.html
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medium (normal)
- URI: http://purl.obolibrary.org/obo/PATO_0000461
- Definition: Average. A quality inhering in a bearer by virtue of the bearer's exhibiting no deviation from normal or average.
- Attribution: [database_cross_reference: PATOC:GVG]
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bloom period
- URI: http://eol.org/schema/terms/BloomPeriod
- Definition: The seasonal period in the U.S. during which the plant blooms the most. The bloom period is defined as the time when pollen is shed and stigmas are receptive.
- Attribution: USDA PLANTS database Characteristics Data Fields. http://plants.usda.gov/charinfo.html
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late summer
- URI: http://eol.org/schema/terms/lateSummer
- Definition: The late part of the season between the summer solstice and the autumnal equinox.
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calcareous soil tolerance
- URI: http://eol.org/schema/terms/CalcareousSoilTolerance
- Definition: The relative tolerance of the plant to calcareous soil. Calcareous soil is defined as soil containing sufficient free CaCO3 and other carbonates to effervesce visibly or audibly when treated with cold 0.1M HCl. These soils usually contain from 10 to almost 1000g/kg CaCO3 equivalent.
- Attribution: USDA PLANTS database Characteristics Data Fields. http://plants.usda.gov/charinfo.html
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medium (normal)
- URI: http://purl.obolibrary.org/obo/PATO_0000461
- Definition: Average. A quality inhering in a bearer by virtue of the bearer's exhibiting no deviation from normal or average.
- Attribution: [database_cross_reference: PATOC:GVG]
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fire resistance
- URI: http://eol.org/schema/terms/FireResistance
- Definition: The ability of an organism to resist burning.
- Comment: If a plant can carry a fire—and most can—it is scored as "not fire resistant" in the USDA PLANTS database where this characteristic is evaluated with reference to problem fires in California. http://plants.usda.gov/charinfo.html
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no
- URI: http://eol.org/schema/terms/no
- Definition: This statement is false; the answer to this question is no.
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fire tolerance
- URI: http://eol.org/schema/terms/FireTolerance
- Definition: The relative ability of a plant to resprout, regrow, or reestablish from residual seed after a fire.
- Attribution: USDA PLANTS database Characteristics Data Fields (Fire tolerance). http://plants.usda.gov/charinfo.html
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low tolerance
- URI: http://purl.obolibrary.org/obo/PATO_0002394
- Definition: decreased tolerance to: A tolerance quality inhering in a bearer by virtue of the bearer's decreased ability to endure a stimulus.
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fruit or seed color
- URI: http://eol.org/schema/terms/FruitSeedColor
- Definition: The predominant and conspicuous color of the mature fruit or seed from a landscaping aesthetics standpoint.
- Attribution: USDA Plants database. Characteristics Data Fields. http://plants.usda.gov/charinfo.html
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black
- URI: http://purl.obolibrary.org/obo/PATO_0000317
- Definition: A color that lacks any hues as parts.
- Comment: [database_cross_reference: PATOC:GVG]
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geographic distribution includes
- URI: http://eol.org/schema/terms/Present
- Definition: This organism is known to be present in this location or region. Not exclusive; other regions may also be reported.
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New Jersey
- URI: http://www.geonames.org/5101760
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native range includes
- URI: http://eol.org/schema/terms/NativeRange
- Definition: Lists jurisdictions in which a given organism is a member of the undisturbed fauna or flora.
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The Contiguous United States
- URI: http://www.wikidata.org/entity/Q578170
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planting density
- URI: http://eol.org/schema/terms/PlantingDensity
- Definition: Recommended minimum number of individual plants to plant per area.
- Attribution: USDA PLANTS database Characteristics Data Fields. http://plants.usda.gov/charinfo.html
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18000 per acre
precipitation tolerance
- URI: http://eol.org/schema/terms/PrecipitationTolerance
- Definition: Minimum tolerable rainfall (in inches), expressed as the average annual minimum precipitation that occurs 20% of the time (i.e., the probability of it being this dry in any given year is 20%) at the driest climate station within the known geographical range of the plant. geographical range of the plant. For cultivars, the geographical range is defined as the area to which the cultivar is well adapted rather than marginally adapted.
- Comment: Minimum precipitation tolerance: Minimum tolerable rainfall, expressed as the average annual minimum precipitation that occurs 20% of the time (i.e., the probability of it being this dry in any given year is 20%) at the driest climate station within the known geographical range of the plant. Maximum precipitation tolerance: Maximum tolerable rainfall, expressed as the annual average precipitation of the wettest climate station within the known geographical range of the plant. For cultivars, the geographical range is defined as the area to which the cultivar is well adapted rather than marginally adapted.
- Attribution: USDA PLANTS database Characteristics Data Fields. http://plants.usda.gov/charinfo.html
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55 inch
seed spread rate
- URI: http://eol.org/schema/terms/SeedSpreadRate
- Definition: The capability of the plant to spread through its seed production compared to other species with the same growth habit.
- Attribution: USDA PLANTS database Characteristics Data Fields. http://plants.usda.gov/charinfo.html
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slow
- URI: http://purl.obolibrary.org/obo/PATO_0000911
- Definition: Decreased rate. A rate which is relatively low.
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Alison Young cc-by-nc-4.0

Yellow Flat Sedge includes 5 children: