Eleocharis flavescens

Last updated

Bright Green Spikerush
Eleocharis flavescens AWP-SW.png
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Cyperaceae
Genus: Eleocharis
Species:
E. flavescens
Binomial name
Eleocharis flavescens
(Poir.) Urb.
Synonyms
List
    • Baeothryon flavescens(Poir.) A.Dietr.
    • Eleocharis albivaginataBoeck.
    • Eleocharis albivaginata var. humilisBoeck.
    • Eleocharis albovaginataBoeckeler
    • Eleocharis albovaginata var. flaccidaBoeckeler
    • Eleocharis albovaginata var. humilisBoeckeler
    • Eleocharis albovaginata var. macrostachyaBoeckeler
    • Eleocharis albovaginata var. strictaBoeckeler
    • Eleocharis albovaginata var. tenuisBoeckeler
    • Eleocharis arechavaletaeBoeckeler
    • Eleocharis biocreataNees
    • Eleocharis dussianaBoeckeler
    • Eleocharis flaccida(Rchb. ex A.Spreng.) Urb.
    • Eleocharis flaccida var. arechavaletaeOsten
    • Eleocharis flaccida var. capitataH.Pfeiff.
    • Eleocharis flaccida var. fuscescensKük.
    • Eleocharis flaccida var. humilisKük. ex Osten
    • Eleocharis flaccida var. macrostachyaOsten
    • Eleocharis flaccida var. olivacea Fernald & Griscom
    • Eleocharis flavescens var. dussiana (Boeckeler) Stehlé
    • Eleocharis flavescens var. flavescens
    • Eleocharis flavescens var. fuscescens (Kük.) Svenson
    • Eleocharis flavescens var. thermalis (Rydb.) Cronquist
    • Eleocharis ochreata (Nees) Steud.
    • Eleocharis ochreata var. flaccida (Rchb. ex A.Spreng.) Boeckeler
    • Eleocharis polymorpha Nees
    • Eleocharis praticola Britton
    • Eleocharis sulciculmis Rchb. ex Kunth
    • Eleocharis thermalis Rydb.
    • Eleogenus ochreatus Nees
    • Eleogenus ochreatus var. flaccidus Nees
    • Eleogenus ochreatus var. minor Nees
    • Scirpus alboater Schrad. ex Nees
    • Scirpus albovaginatus (Boeckeler) Kuntze
    • Scirpus anisochaetus C.Wright
    • Scirpus caribaeus Griseb.
    • Scirpus flaccidus Rchb. ex A.Spreng.
    • Scirpus flavescens Poir.
    • Scirpus gaudichaudianus Kunth
    • Scirpus melanospermus Salzm. ex Steud.
    • Scirpus ochreatus (Nees) Griseb.
    • Scirpus palmaris Willd. ex Kunth
    • Trichophyllum ochreatum (Nees) House
    • Trichophyllum praticola (Britton) House
    • Trichophyllum thermale (Rydb.) House

Eleocharis flavescens is a perennial flowering plant species called bright green spikerush, pale spike-rush, or wrinkle-sheathed spike-rush; [1] it is a member of the sedge family, Cyperaceae. It is clump-forming species that also spreads into colonies. It is a small species that looks similar to other Spikerush species. It is native to temperate North America, the West Indies, and South America. [1]

Varieties

There are two varieties. [1]

Eleocharis flavescens var. olivacea(Torr.) Gleason: is found along shorelines in eastern North America along the Atlantic coast and inland south of the Great Lakes to Minnesota. [2] It is a short caespitose plant with biconvex, green to dark brown, achenes. [2] The achenes have a two-cleft style and bristles that are as long or longer than the achene. [2] The scales of the achene are rounded with round tips and have a green midrib. [2] In Minnesota it reaches its most westerly distribution and it is listed as a Threatened species because of its rarity. [3] It is a wetland species found in only a few locations in Minnesota but this may be due to under collecting because the species is small and looks like other species. In Minnesota, it has been found growing on a mucky lakeshore in a mixed forest, and along a muddy shoreline of a peat pond. [2]

Eleocharis flavescens var. flavescens: with red-brown to dark brown ripe achenes. [1] It grows in southern and western USA, the West Indies, and South America. [1]

Warm springs spike-rush (Eleocharis flavescens var. thermalis) (13822702854) Warm springs spike-rush (Eleocharis flavescens var. thermalis) (13822702854).jpg
Warm springs spike-rush (Eleocharis flavescens var. thermalis) (13822702854)

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Eleocharis is a virtually cosmopolitan genus of 250 or more species of flowering plants in the sedge family, Cyperaceae. The name is derived from the Greek words ἕλειος (heleios), meaning "marsh dweller," and χάρις (charis), meaning "grace." Members of the genus are known commonly as spikerushes or spikesedges. The genus has a geographically cosmopolitan distribution, with centers of diversity in the Amazon Rainforest and adjacent eastern slopes of the South American Andes, northern Australia, eastern North America, California, Southern Africa, and subtropical Asia. The vast majority of Eleocharis species grow in aquatic or mesic habitats from sea level to higher than 5,000 meters in elevation.

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Eleocharis acicularis is a species of spikesedge known by the common names needle spikerush and least spikerush. It is widespread across Europe, central and southeastern Asia, North America and northeastern South America as far south as Ecuador. It is also found in Australia, where it is probably an introduced species.

Eleocharis vivipara is a species of flowering plant in the sedge family known by several common names, including umbrella hairgrass, sprouting spikerush, and viviparous spikerush. It is native to the southern United States from eastern Texas to eastern Virginia. It takes the form of a clump of thin stems. A spike of flowers appears at the tip of the stem. The plant may also reproduce by growing a plantlet and runners.

Eleocharis atropurpurea is a species of spikesedge known by the common name purple spikerush. This is an aquatic plant native to much of. It also has a wide distribution in temperate regions of North and South America and Asia. It is present in Europe, where it may be an introduced species for the most part.

Eleocharis geniculata is a species of spikesedge known by several common names, including bent spikerush and Canada spikesedge. This is a widespread plant of wet areas in the Americas, Asia, Africa, Australia, Madagascar, and some Pacific Islands. It is an annual spikesedge growing to a maximum height of about 40 centimeters. It has a few straw-colored leaves and many thin erect stems. The stems hold inflorescences of rounded spikelets each containing at least 10 tiny flowers. The flowers are covered with dark greenish-brown bracts. The fruit is a shiny purple-brown achene not more than a millimeter long.

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<i>Eleocharis pachycarpa</i> Species of grass-like plant

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<i>Eleocharis palustris</i> Species of grass-like plant

Eleocharis palustris, the common spike-rush, creeping spike-rush or marsh spike-rush, is a species of mat-forming perennial flowering plants in the sedge family Cyperaceae. It grows in wetlands in Europe, North Africa, northern and central Asia and North America. Eleocharis palustris is not easily distinguished from other closely related species and is extremely variable worldwide itself. The species epithet palustris is Latin for "of the marsh" and indicates its common habitat.

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<i>Eleocharis microcarpa</i> Species of grass-like plant

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<i>Eleocharis nitida</i> A species of grass-like sedge

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References

  1. 1 2 3 4 5 "Eleocharis flavescens in Flora of North America @ efloras.org". www.efloras.org. Retrieved 2020-12-29.
  2. 1 2 3 4 5 Barbara Coffin; Lee Pfannmuller (1988). Minnesota's Endangered Flora and Fauna. U of Minnesota Press. p. 91. ISBN   978-0-8166-1689-3.
  3. "Eleocharis flavescens (Bright Green Spikerush): Minnesota Wildflowers". www.minnesotawildflowers.info. Retrieved 2020-12-29.