Eleocharis acicularis

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:	Eleocharis acicularis (L.)Roem. & Schult.
Common Name:	NEEDLE SPIKERUSH
Status:	Native, OBL (DEP), OBL (NWPL)
Specimen:	View details of USF Herbarium specimens

** Not applicable or data not available.

Classification

Division
Class
Sub Class
Order	POALES
Family	CYPERACEAE
Genus	Eleocharis
Species	Eleocharis acicularis (L.)Roem. & Schult. - NEEDLE SPIKERUSH

Citation

Citation	ELEOCHARIS ACICULARIS (Linnaeus) Roemer & Schultes, Syst. Veg. 2: 154. 1817.
Basionym:	Scirpus acicularis Linnaeus 1753.
Type:	Without data (lectotype: LINN 71.13). Lectotypified by Egorova, Novit. Syst. Pl. Vasc. 17: 69. 1980. Without data, Herb. Celsius V: 677 (epitype: UPS). Epitypified by Kukkonen, in Cafferty & C. E. Jarvis, Taxon 53: 180. 2004.

** Not applicable or data not available.

Source

County	Herbaria	Literature Citation (If Applicable)
Alachua	FLAS
Gadsden	FSU
Jackson	FLAS
Leon	USF

Synonyms

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

Synonym	Full Citation	Basionym	Type
Chaetocyperus acicularis	Chaetocyperus acicularis (Linnaeus) Nees von Esenbeck, in Martius, Fl. Bras. 2(1): 95. 1842.	BASIONYM: Scirpus acicularis Linnaeus 1753.
Clavula acicularis	Clavula acicularis (Linnaeus) Dumortier, Fl. Belg. 143. 1827.	BASIONYM: Scirpus acicularis Linnaeus 1753.
Cyperus acicularis	Cyperus acicularis (Linnaeus) Withering, Arr. Brit. Pl., ed. 3. 2: 78. 1796.	BASIONYM: Scirpus acicularis Linnaeus 1753.
Eleocharis acicularis var. typica	Eleocharis acicularis (Linnaeus) Roemer & Schultes, var. typica Svenson, Rhodora 31: 184. 1929, nom. inadmiss.	BASIONYM: Scirpus acicularis Linnaeus 1753.
Isolepis acicularis	Isolepis acicularis (Linnaeus) Schlechtendal, Fl. Berol. 1: 36. 1823.	BASIONYM: Scirpus acicularis Linnaeus 1753.
Mariscus acicularis	Mariscus acicularis (Linnaeus) Moench, Methodus 350. 1794.	BASIONYM: Scirpus acicularis Linnaeus 1753.
Scirpidium aciculare	Scirpidium aciculare (Linnaeus) Nees von Esenbeck, Linnaea 9: 293. 1834.	BASIONYM: Scirpus acicularis Linnaeus 1753.
Scirpus acicularis	Scirpus acicularis Linnaeus, Sp. Pl. 48. 1753.		TYPE: Without data (lectotype: LINN 71.13). Lectotypified by Egorova, Novit. Syst. Pl. Vasc. 17: 69. 1980. TYPE: Without data, Herb. Celsius V: 677 (epitype: UPS). Epitypified by Kukkonen, in Cafferty & C. E. Jarvis, Taxon 53: 180. 2004.
Trichophyllum aciculare	Trichophyllum aciculare (Linnaeus) House, Amer. Midl. Naturalist 6: 204. 1920.	BASIONYM: Scirpus acicularis Linnaeus 1753.
Baeothryon pusillum	Baeothryon pusillum A. Dietrich, Sp. Pl. 2: 92. 1833, nom. illegit.	BASIONYM: Scirpus pusillus Vahl 1805, nom. illegit.; Scirpus capillaceus Michaux 1803.
Chaetocyperus polymorphus var. capillaceus	Chaetocyperus polymorphus Lindley & Nees von Esenbeck ex Nees von Esenbeck, var. capillaceus (Michaux) Nees von Esenbeck, in Martius, Fl. Bras. 2(1): 94. 1842.	BASIONYM: Scirpus capillaceus Michaux 1803.
Clavula comosa	Clavula comosa Dumortier, Fl. Belg. 143. 1827.		TYPE: BELGIUM:
Eleocharis acicularis forma inundata	Eleocharis acicularis (Linnaeus) Roemer & Schultes, forma inundata Svenson, Rhodora 31: 186. 1929, nom. illegit.	BASIONYM: Scirpus acicularis Linnaeus, forma submersa Glück 1911; Eleocharis acicularis (Linnaeus) Roemer & Schultes, forma submersa Druce 1897, non (Nilsson) Norman 1893.
Eleocharis acicularis forma submersa	Eleocharis acicularis (Linnaeus) Roemer & Schultes, forma submersa Druce, Fl. Berkshire 524. 1897, non (Nilsson) Norman 1893.
Eleocharis acicularis forma submersa	Eleocharis acicularis (Linnaeus) Roemer & Schultes, forma submersa (Nilsson) Norman, Skr. Vidensk.-Selsk. Christiana, Math.-Naturvidensk. Kl. 1893(16): 43. 1893.	BASIONYM: Scirpus acicularis Linnaeus, var. submersus Nilsson 1888.
Eleocharis acicularis var. gracilescens	Eleocharis acicularis (Linnaeus) Roemer & Schultes, var. gracilescens Svenson, Rhodora 31: 191. 1929.		TYPE: MISSOURI: St. Louis Co.: St. Louis, 1845, Engelmann s.n. (holotype: GH).
Eleocharis acicularis var. longiseta	Eleocharis acicularis (Linnaeus) Roemer & Schultes, var. longiseta Svenson, Rhodora 31: 189. 1929.		TYPE: JAPAN: Nagasaki, 1862, Oldham 909 (holotype: GH).
Eleocharis acicularis var. occidentalis	Eleocharis acicularis (Linnaeus) Roemer & Schultes, var. occidentalis Svenson, Rhodora 31: 190. 1929.		TYPE: CALIFORNIA: Santa Barbara Co.: Santa Barbara, s.d., Rothrock 80 (holotype: GH).
Eleocharis acicularis var. submersa	Eleocharis acicularis (Linnaeus) Roemer & Schultes, var. submersa (Nilsson) Svenson, Rhodora 31: 188. 1929.	BASIONYM: Scirpus acicularis Linnaeus, var. submersus Nilsson 1888.
Eleocharis comosa	Eleocharis comosa (Dumortier) K. Richter, Pl. Eur. 1: 143. 1890.	BASIONYM: Clavula comosa Dumortier 1827.
Eleocharis costata	Eleocharis costata J. Presl, Fl. Cech. 11. 1819.
Eleocharis pusillus	Eleocharis pusillus A. W. Wood, Amer. Bot. Fl. 361. 1870, non R. Brown 1810.	BASIONYM: Scirpus pusillus Vahl 1805, nom. illegit.; Scirpus capillaceus Michaux 1803.
Scirpus acicularis forma submersa	Scirpus acicularis Linnaeus, forma submersa Glück, Untersuch. Waser-Sumpfgew. 3: 573. 1911.	BASIONYM: Eleocharis acicularis (Linnaeus) Roemer & Schultes, forma submersa Druce 1897, non (Nilsson) Norman 1893.
Scirpus acicularis forma submersus	Scirpus acicularis Linnaeus, forma submersus (Nilsson) Porsild, Meddel. Groenland 50: 370. 1912, non Glück 1911.	BASIONYM: Scirpus acicularis Linnaeus, var. submersus Nilsson 1888.
Scirpus acicularis var. submersa	Scirpus acicularis Linnaeus, var. submersa (Glück) Blomgren, in Holmberg, Skand. Fl. 310. 1926, non Nillson 1888.	BASIONYM: Scirpus acicularis Linnaeus, forma submersa Glück 1911; Eleocharis acicularis (Linnaeus) Roemer & Schultes, forma submersa Druce 1897, non (Nilsson) Norman 1893.
Scirpus acicularis var. submersus	Scirpus acicularis Linnaeus, var. submersus Nilsson, Bot. Not. 1888: 144. 1888.		TYPE: NORWAY/SWEDEN:
Scirpus capillaceus	Scirpus capillaceus Michaux, Fl. Bor.-Amer. 1: 30. 1803.
Scirpus chaeta	Scirpus chaeta Schultes, Mant. 2: 72. 1824.	BASIONYM: Scirpus trichodes Muhlenberg 1817, non S. trichoides Kunth 1816.
Scirpus pusillus	Scirpus pusillus Vahl, Enum. Pl. 2: 246. 1805, nom. illegit.	BASIONYM: Scirpus capillaceus Michaux 1803.
Scirpus trichodes	Scirpus trichodes Muhlenberg, Descr. Gram. 30. 1817, non S. trichoides Kunth 1816.		TYPE: PENNSYLVANIA:

Specimens

Country	State	County	Date	Specimen
USA	North Carolina	Hoke Co.	09 Jul 1996	S. L. Orzell 24839
USA	South Carolina	Saluda Co.	08 Jul 1957	A. E. Radford 26833
USA	South Carolina	Saluda Co.	03 Jul 1992	S. R. Hill 23654
USA	Illinois	Brown Co.	21 Sep 2000	S. R. Hill 33254
USA	Massachusetts	Middlesex Co.	1912	H. W. Thoreau 14094
USA	Illinois	Kane Co.	25 Aug 2005	S. R. Hill 36620
USA	Illinois	Cass Co.	04 Sep 1996	S. R. Hill 28643
USA	Wisconsin	Sauk Co.	04 Sep 1958	H. H. Iltis 11807
USA	Colorado	Gunnison Co.	15 Jul 1959	N. H. Russell 10407
USA	Oklahoma	Johnston Co.	23 Jun 1976	R. J. Tyrl 1140
USA	Maine	Androscoggin Co.	1893	K. Furbish s.n.
USA	Wisconsin	Marquette Co.	21 Sep 1963	H. H. Iltis 21104

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.

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Shrub:	DESCRIPTION TO BE PROVIDED BY NEW YORK.
Tree:	DESCRIPTION TO BE PROVIDED BY NEW YORK.
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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.

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Associated Ecological Communities

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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.

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