Cyperus polystachyos

Classification	Monocots
Family	Cyperaceae
Family (Traditional)	Cyperaceae
Genus	Cyperus
Species:	Cyperus polystachyos Rottb.
Common Name	Manyspike Flatsedge
Growth Habit	graminoid
Plant Notes	**
Characteristics	Armaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: No; Woody Herbaceous: Herbaceous; Natural Area Presence: CCNMP; Natural Area Presence: DRU; Natural Area Presence: GRSM; Natural Area Presence: LC; Duration: Annual; Duration: Perennial; General Ecology: Terrestrial; Growth Habit: graminoid; Moisture Requirements: Hydric; Moisture Requirements: Wetland; Region of Origin: North America; Reproductive Phenology: July; Reproductive Phenology: August; Reproductive Phenology: September; Reproductive Phenology: October; Leaf Arrangement: basal; Leaf Complexity: simple; Leaf Dissection: 0; Leaf Fragrance: No; Leaf Persistance: Deciduous; Leaf Petiole Type: sessile; Leaf Rank: 3-ranked; Leaf Type: grass-like; Leaf Venation: parallel; Leaflet Margins: entire; Leaflet Number: 0; Base Flower Color: Brown (incl. Maroon); Base Flower Color: Green; Fruit Dehiscence: No; Fruit Type: Achene; Fruit Wet/Dry: Dry; Hypanthium Present: No; Ovary Position: Superior; Overall Flower Symmetry: N/A; Perianth Present: No; Placentation Type: Basal; Sporangium Arrangement: N/A; Stamen Number: 2
C value	4
Status	Native; AGCP (FACW), EMP (FACW) (NWPL); TN[SNR] KY[S4?] (State Rank); G5 (Global Rank)
Specimen(s)	View and Download Specimen Details »

** Not applicable or data not available.

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Species Distribution Map

This species has been reported in the counties highlighted in the interactive distribution map below. Click on a county to display the its name. Click the question mark icon () to view additional information about the ecoregions shown. In the map legend, there are links to toggle the visibility of the ecoregions and/or their labels. In addition, clicking on an ecoregion name will highlight that region on the map.

State Boundaries
Counties
Counties - Species Present

Ecoregions

Southeastern Plains
- Blackland Prarie
Blue Ridge Mountains
Ridge and Valley
Cumberland Plateau
Cumberland Mountains
Allegheny Plateau

Interior Plateau
- Bluegrass Region
- Nashville Basin
- Pennyroyal Karst Plain
- Western Highland Rim
- Eastern Highland Rim

Interior River Valleys and Hills
- Shawnee / Caseyville Hills
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
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Synonyms

Synonym	Full Citation
Mariscus polystachyos	Mariscus polystachyos auct. non A. Rich.

Specimens and Distribution

This species has been reported in the following counties by the herbaria listed. An overview of the individual specimens are provided in the table that follows. Click on the accession number to view details; click on column headers to sort.

Counties included on distribution map: Breathitt (KY), Calloway (KY), Graves (KY), Jefferson (KY), Lyon (KY), Marshall (KY), Shelby (KY), Todd (KY), Trigg (KY), Coffee (TN), Fayette (TN), Hardin (TN), Haywood (TN), Henderson (TN), Henry (TN), Humphreys (TN), McNairy (TN), Madison (TN), Stewart (TN)

Herbaria represented by specimen data listed below: APSC, BEREA, EKY, TENN, UCHT

Range of years during which specimens were collected: 1949 - 1995

Accession No. (click for full details)	County	State	Coll. Date	Collector & Collection No.	Herbarium & Herbarium Name Used
APSC0070511	Calloway	Kentucky	07 Sep 1979	Max Medley	APSC Cyperus polystachyos
APSC0067720	Jefferson	Kentucky	17 Oct 1982	Max Medley	APSC Cyperus polystachyos
UCHT038831	Fayette	Tennessee			UCHT Cyperus polystachyos
TENN-V-0039810	Lyon	Kentucky			TENN Cyperus polystachyos
TENN-V-0039848	Marshall	Kentucky			TENN Cyperus polystachyos
TENN-V-0038377	Fayette	Tennessee			TENN Cyperus polystachyos
APSC0039761	Humphreys	Tennessee			APSC Cyperus polystachyos
APSC0039744	Stewart	Tennessee	25 Oct 1985	Edward Chester	APSC Cyperus polystachyos
APSC0039747	Stewart	Tennessee	19 Aug 1986	Edward Chester	APSC Cyperus polystachyos
TENN-V-0039823	Todd	Kentucky			TENN Cyperus polystachyos
TENN-V-0038379	Haywood	Tennessee			TENN Cyperus polystachyos
TENN-V-0038376	Coffee	Tennessee			TENN Cyperus polystachyos
31234100068855	Trigg	Kentucky	25 Sep 1973	Raymond Athey 2616	EKY Cyperus polystachyos
31234100068863	Shelby	Kentucky	14 Oct 1995	Shawn Coyle	EKY Cyperus polystachyos
BEREA004112	Breathitt	Kentucky	22 Sep 1994	Randy L. Mears 427	BEREA Cyperus polystachyos
TENN-V-0039800	Marshall	Kentucky			TENN Cyperus polystachyos
APSC0100980	Trigg	Kentucky			APSC Cyperus polystachyos
APSC0072297	Marshall	Kentucky			APSC Cyperus polystachyos
TENN-V-0039788	Todd	Kentucky			TENN Cyperus polystachyos
TENN-V-0038380	Henderson	Tennessee			TENN Cyperus polystachyos
APSC0070482	Lyon	Kentucky			APSC Cyperus polystachyos
APSC0039766	Fayette	Tennessee			APSC Cyperus polystachyos
31234100068830	Graves	Kentucky	04 Oct 1984	Raymond Athey 5059	EKY Cyperus polystachyos
BEREA004113	Calloway	Kentucky	15 Sep 1993	Randy L. Mears 267	BEREA Cyperus polystachyos
APSC0039746	Lyon	Kentucky			APSC Cyperus polystachyos
TENN-V-0038383	Madison	Tennessee			TENN Cyperus polystachyos
APSC0070513	Marshall	Kentucky			APSC Cyperus polystachyos
APSC0039763	Todd	Kentucky	02 Jul 1949	Floyd Brown	APSC Cyperus polystachyos
31234100068814	Calloway	Kentucky	19 Sep 1974	Raymond Athey 2959	EKY Cyperus polystachyos
TENN-V-0038382	Henry	Tennessee			TENN Cyperus polystachyos
TENN-V-0038384	McNairy	Tennessee			TENN Cyperus polystachyos
TENN-V-0038381	Henry	Tennessee			TENN Cyperus polystachyos
TENN-V-0039799	Calloway	Kentucky			TENN Cyperus polystachyos
TENN-V-0038378	Hardin	Tennessee			TENN Cyperus polystachyos
TENN-V-0039846	Calloway	Kentucky			TENN Cyperus polystachyos
TENN-V-0039847	Calloway	Kentucky			TENN Cyperus polystachyos
APSC0039745	Lyon	Kentucky			APSC Cyperus polystachyos
APSC0039762	Todd	Kentucky	10 Sep 1949	Floyd Brown	APSC Cyperus polystachyos

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Cyperus polystachyos

Related Links

Species Distribution Map

Ecoregions

Synonyms

Specimens and Distribution

Plant Photos