Cyperus pumilus

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Distribution Map: Based on vouchered plant specimens from wild populations. Cultivated occurrences are not mapped. View county names by placing the cursor over the map.

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Family:	CYPERACEAE
Species:	Cyperus pumilus L.
Common Name:	LOW FLATSEDGE
Status:	Not Native, FACW (DEP), FACW (NWPL)
Specimen:	View details of USF Herbarium specimens

** Not applicable or data not available.

Classification

Division
Class
Sub Class
Order	POALES
Family	CYPERACEAE
Genus	Cyperus
Species	Cyperus pumilus L. - LOW FLATSEDGE

Citation

Citation	CYPERUS PUMILUS Linnaeus, Cent. Pl. 2: 6. 1756.
Basionym:	**
Type:	Without data (lectotype: LINN 70.34). Lectotypified by Kukkonen, in Cafferty & C. E. Jarvis, Taxon 53: 179. 2004.

** Not applicable or data not available.

Source

County	Herbaria	Literature Citation (If Applicable)
Brevard	USF
Charlotte	USF
Collier	USF
Duval	USF
Escambia	USF
Franklin	USF
Hardee	USF
Hendry	USF
Hernando	FLAS
Highlands	USF
Hillsborough	USF
Lee	FLAS
Liberty	FSU
Manatee	USF
Martin	FLAS
Miami-Dade	USF
Okeechobee	USF
Orange	FSU
Osceola	USF
Pasco	USF
Pinellas	USF
Polk	USF
Santa Rosa	FSU
Sarasota	USF
St. Lucie	USF
Wakulla	FSU

Synonyms

– Denotes synonyms that are applicable to the state. Show these synonyms only

Synonym	Full Citation	Basionym	Type
Cyperus leucolepis	Cyperus leucolepis J. Carey ex C. B. Clarke, J. Linn. Soc., Bot. 21: 61. 1884, non Boeckeler 1868.		TYPE: FLORIDA: Gadsden Co.: Near Quincy, s.d., Chapman 7 (holotype: K; isotype: NY fragm).
Cyperus pumilus var. leucolepis	Cyperus pumilus Linnaeus, var. leucolepis (C. B. Clarke) Kükenthal, in Engler, Pflanzenr. 4(Heft 101): 378. 1936.	BASIONYM: Juncellus leucolepis C. B. Clarke 1908; Cyperus leucolepis J. Carey ex C. B. Clarke 1884, non Boeckeler 1868.
Juncellus leucolepis	Juncellus leucolepis C. B. Clarke, Bull. Misc. Inform. Kew, Add. Ser. 8: 3. 1908.	BASIONYM: Cyperus leucolepis J. Carey ex C. B. Clarke 1884, non Boeckeler 1868.
Pycreus pumilus	Pycreus pumilus (Linnaeus) Domin, Biblioth. Bot. 85: 417. 1915.	BASIONYM: Cyperus pumilus Linnaeus 1756.
Cyperus commutatus	Cyperus commutatus Steudel, Syn. Pl. Glumac. 2: 10. 1854.
Cyperus gymnoleptus	Cyperus gymnoleptus Steudel, Syn. Pl. Glumac. 2: 3. 1854.		TYPE: PHILIPPINE ISLANDS: Luzon:
Cyperus laxiusculus	Cyperus laxiusculus Steudel, Syn. Pl. Glumac. 2: 14. 1854.		TYPE: SENEGAL/GAMBIA:
Cyperus nervulosus	Cyperus nervulosus (Kükenthal) S. T. Blake, Proc. Roy. Soc. Queensland 51: 41. 1940.	BASIONYM: Cyperus pumilus Linnaeus, var. nervulosus Kükenthal 1936.
Cyperus nitens	Cyperus nitens Retzius, Observ. Bot. 5: 13. 1788 ("1789").		TYPE: INDIA: Tamil Nadu: Tranquebar,
Cyperus nitens var. muticus	Cyperus nitens Retzius, var. muticus Boeckeler, Linnaea 35: 484. 1868.	BASIONYM: Cyperus commutatus Steudel 1854.
Cyperus nitens var. patens	Cyperus nitens Retzius, var. patens (Vahl) Boeckeler, Linnaea 35: 484. 1868.	BASIONYM: Cyperus patens Vahl 1805.
Cyperus obstinatus	Cyperus obstinatus Steudel, Syn. Pl. Glumac. 2: 10. 1854.
Cyperus patens	Cyperus patens Vahl, Enum. Pl. 2: 334. 1805.
Cyperus pulvinatus	Cyperus pulvinatus Nees von Esenbeck & Meyen, in Wight, Contr. Bot. Ind. 74. 1834.		TYPE: INDIA:
Cyperus pumilus forma borneensis	Cyperus pumilus Linlnaeus, forma borneensis C. B. Clarke, J. Linn. Soc., Bot. 21: 45. 1884.		TYPE: BORNEO:
Cyperus pumilus forma gracilis	Cyperus pumilus Linnaeus, forma gracilis (E. G. Camus) Kükenthal, in Engler, Pflanzenr. 4(Heft 101): 376. 1936.	BASIONYM: Pycreus nitens (Retzius) Nees von Esenbeck, var. gracilis E. G. Camus 1910.
Cyperus pumilus forma patens	Cyperus pumilus Linlnaeus, forma patens C. B. Clarke, J. Linn. Soc., Bot. 21: 44. 1884.		TYPE: INDIA:
Cyperus pumilus var. muticus	Cyperus pumilus Linnaeus, var. muticus (Boeckeler) C. B. Clarke, J. Linn. Soc., Bot. 21: 45. 1884.	BASIONYM: Cyperus nitens Retzius, var. muticus Boeckeler 1868; Cyperus commutatus Steudel 1854..
Cyperus pumilus var. nervulosus	Cyperus pumilus Linnaeus, var. nervulosus Kükenthal, in Engler, Pflanzenr. 4(Heft 101): 378. 1936.		TYPE: VIETNAM:
Cyperus pumilus var. patens	Cyperus pumilus Linnaeus, var. patens (Vahl) Kükenthal, in Engler, Pflanzenr. 4(Heft 101): 378. 1936.	BASIONYM: Cyperus patens Vahl 1805.
Cyperus pumilus var. prorepens	Cyperus pumilus Linnaeus, var. prorepens Külenthal, in Engler, Pflanzenr. 4(Heft 101): 378. 1936.		TYPE: AUSTRALIA:
Cyperus pumilus var. punctatus	Cyperus pumilus Linnaeus, var. punctatus C. B. Clarke, J. Linn. Soc., Bot. 21: 45. 1884.	BASIONYM: Cyperus punctatus Roxburgh 1820, non Lamarck 1791.
Cyperus punctatus	Cyperus punctatus Roxburgh, Fl. Ind. 1: 197. 1820, non Lamarck 1791.		TYPE: INDIA:
Cyperus pusillus	Cyperus pusillus Vahl, Enum. Pl. 2: 303. 1805.	BASIONYM: Cyperus pygmaeus Retzius 1786, non Rottbøll 1773.
Cyperus pygmaeus	Cyperus pygmaeus Retzius, Observ. Bot. 4: 9. 1786, non Rottbøll 1773.		TYPE: INDIA: Tamil Nadu: Tranquebar, s.d., Koenig s.n. (holotype: ?).
Cyperus terminalis	Cyperus terminalis Steudel, Syn. Pl. Glumac. 2: 5. 1854.		TYPE: SENEGAL/GAMBIA:
Cyperus truncatulus	Cyperus truncatulus Steudel, Flora 25: 581. 1842.
Dichostylis patens	Dichostylis patens (Vahl) Palla, Bot. Jahrb. Syst. 10: 296. 1899.	BASIONYM: Cyperus patens Vahl 1805.
Juncellus pumilus	Juncellus pumilus Peter, Abh. Königl. Ges. Wiss. Göttingen, Math.-Phys. Kl., ser. 2. 13(2): 48. 1928.
Pycreus nitens	Pycreus nitens (Retzius) Nees von Esenbeck, in Meyen, Nov. Actorum Acad. Caes. Leop.-Carol. Nat. Cur. 19(suppl. 1): 53. 1843.	BASIONYM: Cyperus nitens Retzius 1786.
Pycreus nitens var. gracilis	Pycreus nitens (Retzius) Nees von Esenbeck, var. gracilis E. G. Camus, Notul. Syst. (Paris) 1: 241. 1910.		TYPE: VIETNAM:
Pycreus patens	Pycreus patens (Vahl) Chermezon, Arch. Bot. Mém. 7: 11. 1931.	BASIONYM: Cyperus patens Vahl 1805.
Pycreus pumilus var. patens	Pycreus pumilus (Linnaeus) Domin, var. patens (Vahl) Hoenselaar, in Beentje & Ghazanfar, Fl. Trop. E. Afr., Cyperac. 283. 2010.	BASIONYM: Cyperus patens Vahl 1805.
Pycreus pumilus var. punctatus	Pycreus pumilus (Linnaeus) Domin, var. punctatus (C. B. Clarke) Domin, Biblioth. Bot. 85: 417. 1915.	BASIONYM: Cyperus pumilus Linnaeus, var. punctatus C. B. Clarke 1884; Cyperus punctatus Roxburgh 1820, non Lamarck 1791.
Pycreus punctatus	Pycreus punctatus (C. B. Clarke) Govindarajalu, Proc. Indian Acad. Scil., Pl. Sci. 100: 426. 1990.	BASIONYM: Cyperus pumilus Linnaeus, var. punctatus C. B. Clarke 1884; Cyperus punctatus Roxburgh 1820, non Lamarck 1791.

Specimens

Country	State	County	Date	Specimen
USA	Florida	Hillsborough Co.	16 Sep 1977	D. W. Crewz 1130
USA	Florida	Hillsborough Co.	29 Oct 1962	O. K. Lakela 25502
USA	Florida	Hillsborough Co.	24 Aug 1960	J. D. Ray, Jr. 10099
USA	Florida	Hillsborough Co.	26 Oct 1979	B. F. Hansen 6779
USA	Florida	Pinellas Co.	05 Nov 1979	G. Fleming 3317
USA	Florida	Brevard Co.	11 Oct 2000	C. Slaughter 12348
USA	Florida	Highlands Co.	22 Oct 1993	S. L. Orzell 22515
USA	Florida	Polk Co.	06 Nov 1994	S. L. Orzell 23397
USA	Florida	Hendry Co.	21 Sep 1994	S. L. Orzell 23261
USA	Florida	Osceola Co.	01 Oct 2008	C. Slaughter 17018
USA	Florida	Collier Co.	05 Oct 1965	O. K. Lakela 29195
USA	Florida	Collier Co.	14 Sep 1966	O. K. Lakela 30234
USA	Florida	Okeechobee Co.	29 Oct 1998	E. L. Bridges 25433
USA	Florida	Miami-Dade Co.	03 Oct 1977	G. N. Avery 1755
USA	Florida	Collier Co.	22 Sep 1968	O. K. Lakela 31690
USA	Florida	Franklin Co.	12 Sep 1984	L. C. Anderson 7599
USA	Florida	Manatee Co.	21 Sep 1981	A.G. Shuey 2516
USA	Florida	Sarasota Co.	02 Nov 1982	A.G. Shuey 2580
USA	Florida	Charlotte Co.	06 Nov 1981	A.G. Shuey 2523
USA	Florida	Collier Co.	10 Oct 1962	G. R. Cooley 9105
USA	Florida	Pinellas Co.	14 Oct 2001	C. vanHoek CI0114
USA	Florida	Pasco Co.	27 Oct 2007	J. M. Kunzer 2234
USA	Florida	St. Lucie Co.	22 Oct 2007	S. W. Woodmansee 2004
USA	Florida	Hardee Co.	04 Oct 2014	P. J. Simoes 29
USA	Florida	Polk Co.	16 Sep 2015	K. Shelton 9
USA	Florida	Hillsborough Co.	16 Sep 2009	S. Dickman 148
USA	Florida	Duval Co.	26 Sep 2017	E. A. Revuelta 123
USA	Florida	Escambia Co.	28 Aug 2011	J. R. Burkhalter 23281

Listed Status: Florida

Listed Status:	(Florida):Source - Plants in the Preservation of Native Flora of Florida Act. Chapter 5B-40, Florida Administrative Code. 1998, amended.
Endangered:	A species of plants native to the state that are in imminent danger of extinction within the state, the survival of which is unlikely if the causes of a decline in the number of plants continue, and includes all species determined to be endangered or threatened pursuant to the Federal Endangered Species Act of 1973, as amended.
Threatened:	Listed as Threatened Plants in the Preservation of Native Flora of Florida Act. Defined as species of plants native to the state that are in rapid decline in the number of plants within the state, but which have not so decreased in such number as to cause them to be endangered.

Listed Status: US

Listed Status: US	(U.S.) Source - List of Endangered and Threatened Wildlife and Plants under the provisions of the Endangered Species Act of 1973, as amended.
Endangered:	Any species which is in danger of extinction throughout all or a significant portion of its range.
Threatened:	Any species which is likely to become an endangered species within the foreseeable future throughout all or a significant portion of its range.

WAP: Wetland AssessmentProcedure

Wetland Assessment Procedure (WAP): Source - Southwest Florida Water Management District, Wetland Assessment Procedure Instruction Manual for Isolated Wetlands (March 2005).

AD:	Adaptive Species. Plant species designated as FAC or Upland by DEP, but commonly seen in the transition zone in limited numbers.
D:	Deep Species. Plant species commonly found in the deep zone, and designated either FAC or OBL by DEP.
OD:	Outer Deep Species. Plant species commonly found in the outer deep zone, and designated either FACW or OBL by DEP.
T:	Transition Species. Plant species commonly found in the transition zone, and designated either FACW or OBL by DEP.
U:	Upland Species. Plant species that are not expected to be seen in wetlands.

ANY - WAP critieria is not taken into consideration
Yes - Show results with WAP designations
No - Show results without WAP designations

FISC: Florida Invasive Species Council

FISC:

Source - Florida Invasive Species Council's 2017 List of Florida's Most Invasive Species

Category I - Species that are invading and disrupting native plant communities in Florida. This definition does not rely on the economic severity or geographic range of the problem, but on the documented ecological damage caused.

Category II - Species that have shown a potential to disrupt native plant communities. These species may become ranked as Category I, but have not yet demonstrated disruption of natural Florida communities.

DEP: Department of Environmental Protection

Wetland Status, Department of Environmental Regulation (DEP): Source - Delineation of the Landward Extent of Wetlands and Surface Waters, Chapter 62-340, Florida Administrative Code. 1994.

OBL:	Obligate wetland. Occurs almost always under natural conditions in wetlands.
FACW:	Facultative Wetland. Usually occurs in wetlands, but occasionally found in non-wetlands
FAC:	Facultative. equally likely to occur in wetlands or non-wetlands.

NWPL: National Wetland Plant List

National Wetland Plant List (NWPL): Source - Lichvar, R.W., M. Butterwick, N.C. Melvin, and W.N. Kirchner. 2014. The National Wetland Plant List: 2014 Update of Wetland Ratings. Phytoneuron 2014-41: 1-42.

OBL:	Obligate Wetland. Occurs almost always (estimated probability 99%) under natural conditions in wetlands.
FACW:	Facultative Wetland. Usually occurs in wetlands (estimated probability 67%-99%), but occasionally found in non-wetlands.
FAC:	Facultative. Equally likely to occur in wetlands or non-wetlands (estimated probability 34%-66%).
FACU:	Facultative Upland. Usually occurs in non-wetlands (estimated probability 67%-99%), but occasionally found in wetlands (estimated probability 1%-33%).
UPL:	Obligate Upland. Occurs in wetlands in another region, but occurs almost always (estimated probability 99%) under natural conditions in non-wetlands in the regions specified.

Persisting

Identifying species that appear as waifs or only periodically appear in the flora for a few seasons.

Any - Persisting critieria is not taken into consideration
Yes - Show results with a Persisting value of Y
No - Show results without Persisting value of N

Duration

Annual:	Plants that perform their entire lifecycle within a single growing season. All roots, stems, and leaves die at the end of the growing season. Over wintering seeds allow the next generation to appear.
Biennial:	A plant that is typically vegetative its first year and blooms the following season. Once it has bloomed and set seed, the plant dies. Garlic mustard is an example of a biennial.
Perennial:	These plants live for three or more seasons. Many perennials may not be mature enough to bloom during its first year. Perennial wildflowers re-grow each season from overwinter root material.

Category

Vascular:	Any of various plants that have the vascular tissues xylem and phloem. The vascular plants include all seed-bearing plants (the gymnosperms and angiosperms) and the pteridophytes (including the ferns, lycophytes, and horsetails). Also called tracheophyte.
Bryophyte:	A large group of seedless green plants including the mosses, liverworts, and hornworts. Bryophytes lack the specialized tissues xylem and phloem that circulate water and dissolved nutrients in the vascular plants. Bryophytes generally live on land but are mostly found in moist environments, for they have free-swimming sperm that require water for transport. In contrast to the vascular plants, the gametophyte (haploid) generation of bryophytes constitutes the larger plant form, while the small sporophyte (diploid) generation grows on or within the gametophyte and depends upon it for nutrition.
Lichen:	The mutualistic symbiotic association of a fungus with an alga or a cyanobacterium, or both. The fungal component of a lichen absorbs water and nutrients from the surroundings and provides a suitable environment for the alga or cyanobacterium. These live protected among the dense fungal hyphae and produce carbohydrates for the fungus by photosynthesis. Owing to this partnership, lichens can thrive in harsh environments such as mountaintops and polar regions. The more familiar lichens grow slowly as crusty patches, but lichens are found in a variety of forms, such as the tall, plantlike reindeer moss. The association between the different organisms in a lichen is so close that lichens are routinely referred to as a single organism, and scientists classify lichens using the name of the fungal component.

(Definitions from: American Heritage Science Dictionary)

Growth Habit

Intro paragraph to be provided by New York.

Vine:	DESCRIPTION TO BE PROVIDED BY NEW YORK.
Shrub:	DESCRIPTION TO BE PROVIDED BY NEW YORK.
Tree:	DESCRIPTION TO BE PROVIDED BY NEW YORK.
Et cetera:	DESCRIPTION TO BE PROVIDED BY NEW YORK.

State Rank

This numeric rank provides the relative rarity for each species based on a scale from 1 (very rare) to 5 (common). These ranks carry no legal status.

S1 - Typically 5 or fewer occurrences, very few remaining individuals, acres, or miles of stream, or some factor of its biology making it especially vulnerable in the state.
S2 - Typically 6 to 20 occurrences, few remaining individuals, acres, or miles of stream, or factors demonstrably making it very vulnerable in the state.
S3 - Typically 21 to 100 occurrences, limited acreage, or miles of stream in the state.
S4 - Apparently secure in the state.
S5 - Demonstrably secure in the state.
SE - State exotic or non-native.
SH - Historically known from the state, but not seen in the past 15 years.
SNA - Species for which a rank is not applicable. This is mainly those species which are now excluded from flora for various reasons.
SNR - Not yet ranked.
SX - Apparently extirpated from the state.

Global Rank

Each species' global rank is determined by NatureServe. These ranks carry no legal weight. The global rank reflects the species worldwide rarity.

G1 - Critically imperiled globally because of extreme rarity (5 or fewer occurrences), or very few remaining acres, or miles of stream) or especially vulnerable to extinction because of some factor of its biology.
G2 - Imperiled globally because of rarity (6 - 20 occurrences, or few remaining acres, or miles of stream) or very vulnerable to extinction throughout its range because of other factors.
G3 - Imperiled globally because of rarity (6 - 20 occurrences, or few remaining acres, or miles of stream) or very vulnerable to extinction throughout its range because of other factors.
G4 - Imperiled globally because of rarity (6 - 20 occurrences, or few remaining acres, or miles of stream) or very vulnerable to extinction throughout its range because of other factors.
G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.
GH - Historically known, with the expectation that it might be rediscovered.
GNA - Species for which a rank is not applicable. NatureServe does not typically rank hybrid species.
GNR - Not yet ranked.
GX - Species believed to be extinct.

Filter by County - Counties to Include - ANY versus ALL

Any - An Any search will combine the list of counties to include with a Boolean Or. Plant species returned will be found within at least one of the selected counties.
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Filter by County - Counties to Exclude - ANY versus ALL

Any - An Any search will combine the list of counties to exclude with a Boolean Or. Plant species returned will not be found within at least one of the selected counties.
All - An All search will combine the list of counties to exclude with a Boolean And. Plant species returned will not be found within any of the selected counties.

Associated Ecological Communities

View a List of All Ecological Communities

For more information, contact: Richard Wunderlin or Bruce Hansen, Alan Franck, or Karla Alvarado

Web Development: USF Water Institute

A member of the University of South Florida family of PlantAtlas.org websites

Citation Information:

Wunderlin, R. P., B. F. Hansen, A. R. Franck, and F. B. Essig. 2024. Atlas of Florida Plants (http://florida.plantatlas.usf.edu/). [S. M. Landry and K. N. Campbell (application development), USF Water Institute.] Institute for Systematic Botany, University of South Florida, Tampa.

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Definition: Vouchered Specimen

A voucher specimen is a pressed and thoroughly dried plant sample deposited in a herbarium, and is intended to be a permanent record supporting research purposes. A voucher may be a record of a plant's occurrence in a particular area, or a specific example of a plant used in a scientific investigation.

Proper vouchers display all the necessary attributes for complete identification of the plant, and are to be accompanied by accurate locality, habitat, collection time, and collector data.

Only plant populations vouchered by specimens deposited in Index Herbariorum http://sweetgum.nybg.org/science/ih/ recognized herbaria are represented on this map.