Articles on this page are available in 1 other language: Spanish (1) (learn more)

Overview

Distribution

National Distribution

United States

Origin: Native

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© NatureServe

Source: NatureServe

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

National Distribution

Canada

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© NatureServe

Source: NatureServe

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Distribution in Egypt

Nile region (Cairo).

Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Bibliotheca Alexandrina

Source: Bibliotheca Alexandrina - EOL Ar

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Global Distribution

North America, extensively naturalized in Europe and north Africa.

Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Bibliotheca Alexandrina

Source: Bibliotheca Alexandrina - EOL Ar

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Localities documented in Tropicos sources

Elodea canadensis Rich.:
Canada (North America)
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO 63110 USA

Source: Missouri Botanical Garden

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Localities documented in Tropicos sources

Philotria linearis Rydb.:
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO 63110 USA

Source: Missouri Botanical Garden

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Localities documented in Tropicos sources

Philotria canadensis Britton:
Canada (North America)
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO 63110 USA

Source: Missouri Botanical Garden

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Localities documented in Tropicos sources

Anacharis canadensis (Michx.) Planch.:
Canada (North America)
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
  • Gleason, H. A. & A. J. Cronquist. 1968. The Pteridophytoa, Gymnospermae and Monocotyledoneae. 1: 1–482. In H. A. Gleason Ill. Fl. N. U.S. (ed. 3). New York Botanical Garden, New York.   http://www.tropicos.org/Reference/1495 External link.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO 63110 USA

Source: Missouri Botanical Garden

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Localities documented in Tropicos sources

Elodea schweinitzii Casp.:
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO 63110 USA

Source: Missouri Botanical Garden

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Localities documented in Tropicos sources

Elodea linearis (Rydb.) H. St. John:
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO 63110 USA

Source: Missouri Botanical Garden

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Localities documented in Tropicos sources

Elodea brandegeae H. St. John:
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO 63110 USA

Source: Missouri Botanical Garden

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Localities documented in Tropicos sources

Elodea canadensis Michx.:
Argentina (South America)
Canada (North America)
Chile (South America)
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO 63110 USA

Source: Missouri Botanical Garden

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

B.C., Man., N.B., N.S., Ont., Que., Sask.; Ala., Ark., Calif., Colo., Conn., Del., Fla., Idaho, Ill., Ind., Iowa., Kans., Ky., Maine, Md., Mass., Mich., Minn., Mo., Mont., Nebr., Nev., N.H., N.J., N.Mex., N.Y., N.C., N.Dak., Ohio, Oreg., Pa., R.I., S.Dak., Tenn., Utah, Vt., Va., Wash., W.Va., Wis., Wyo.; Europe; Asia; Australia.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA

Source: Missouri Botanical Garden

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Global Range: Known only from Allentown & Bethlehem, Northampton Co., PA from pre-1840s collections. Collected once in Fishkill Creek, Dutchess Co., NY in 1816. A New Jersey report from this period is probably false and instead from one of the known sites, which are not far from New Jersey (D.Snyder, 3Nov94).

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© NatureServe

Source: NatureServe

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Physical Description

Morphology

Description

Leaves mostly in 3s, spreading to recurved, linear, oblong, to ovate, 5--13 ´ (1.1--)2--5 mm, flat. Inflorescences: staminate spathes cylindric, 8.2--13.5 mm; peduncles abscissing just before or during anthesis; pistillate spathes cylindric, 8.3--17.5 mm. Flowers unisexual; staminate flowers: stamens 7--9(--18), pedicels detaching before or during anthesis; all filaments connate proximally, forming column; anthers 1.7--3 mm; pollen in tetrads; pistillate flowers: styles 2.6--4 mm. Seeds fusiform, 4--5.7 mm, basal hairs absent. 2n = 24 (Britain).
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA

Source: Missouri Botanical Garden

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Size

up to 3 m

  • Wegweiser durch die Natur, Die Tiere und Pflanzen Mitteleuropas, Komet Verlag (Januar 2006), ISBN: 978-3898365512
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

Supplier: Nenya

Unreviewed

Article rating from 0 people

Average rating: 2.5 of 5

Diagnostic Description

Synonym

Elodea brandegeeae H. St. John
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA

Source: Missouri Botanical Garden

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Type Information

Isotype for Philotria linearis Rydb.
Catalog Number: US 875195
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Verified from the card file of type specimens
Preparation: Pressed specimen
Collector(s): A. Gattinger
Locality: Nashville., Davidson, Tennessee, United States, North America
  • Isotype: Rydberg, P. A. 1908. Bull. Torrey Bot. Club. 35: 464.
Creative Commons Attribution 3.0 (CC BY 3.0)

© Smithsonian Institution, National Museum of Natural History, Department of Botany

Source: National Museum of Natural History Collections

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Ecology

Habitat

Pools, ditches and canals.

Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Bibliotheca Alexandrina

Source: Bibliotheca Alexandrina - EOL Ar

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Waters, mostly calcareous, of lakes and rivers; 0--2000m.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA

Source: Missouri Botanical Garden

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Comments: Quiet waters of rivers and other waterways.

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© NatureServe

Source: NatureServe

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Associations

Foodplant / feeds on
larva of Bagous puncticollis feeds on Elodea canadensis

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Population Biology

Number of Occurrences

Note: For many non-migratory species, occurrences are roughly equivalent to populations.

Estimated Number of Occurrences: 1 - 5

Comments: No current EOs known.

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© NatureServe

Source: NatureServe

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Life History and Behavior

Cyclicity

Flowering/Fruiting

Flowering summer.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA

Source: Missouri Botanical Garden

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Life Expectancy

Perennial.

Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Bibliotheca Alexandrina

Source: Bibliotheca Alexandrina - EOL Ar

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Molecular Biology and Genetics

Molecular Biology

Barcode data: Elodea canadensis

The following is a representative barcode sequence, the centroid of all available sequences for this species.


Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Statistics of barcoding coverage: Elodea canadensis

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 4
Species With Barcodes: 1
Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Conservation

Conservation Status

National NatureServe Conservation Status

United States

Rounded National Status Rank: NH - Possibly Extirpated

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© NatureServe

Source: NatureServe

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

NatureServe Conservation Status

Rounded Global Status Rank: GH - Possibly Extinct

Reasons: First collected in 1816 in Dutchess County, New York, then collected several times between 1829 and 1832 in a small area in eastern Pennsylvania (near Bethlehem) where, in spite of repeated searches, it has never been found again. The area in Pennsylvania where the plants were found is now mostly highly developed, but suitable habitats in New York and nearby New Jersey still need inventory. Possibly of hybrid origin.

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© NatureServe

Source: NatureServe

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

National NatureServe Conservation Status

Canada

Rounded National Status Rank: N5 - Secure

United States

Rounded National Status Rank: N5 - Secure

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© NatureServe

Source: NatureServe

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

NatureServe Conservation Status

Rounded Global Status Rank: G5 - Secure

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© NatureServe

Source: NatureServe

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Threats

Comments: If extant populations ever found, threats include water pollution and development.

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© NatureServe

Source: NatureServe

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Comments: Threatened by pollution and drainage of wetlands (Southern Appalachian Species Viability Project 2002).

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© NatureServe

Source: NatureServe

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Management

These species are introduced in Switzerland.
  • Aeschimann, D. & C. Heitz. 2005. Synonymie-Index der Schweizer Flora und der angrenzenden Gebiete (SISF). 2te Auflage. Documenta Floristicae Helvetiae N° 2. Genève.   http://www.crsf.ch/ External link.
Creative Commons Attribution 3.0 (CC BY 3.0)

© Info Flora (CRSF/ZDSF) & Autoren 2005

Supplier: Name It's Source (profile not public)

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Biological Research Needs: Determine taxonomic validity. Elodea schweinitzii could be a phenotypic variant (of E. canadensis) which is related to water level fluctuations, or it could be of hybrid origin. Elodea schweinitzii is sympatric with E. canadensis and E. nuttallii.

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© NatureServe

Source: NatureServe

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Wikipedia

Elodea canadensis

Elodea canadensis (American or Canadian Waterweed or Pondweed) is a perennial aquatic plant, or submergent macrophyte, native to most of North America.[1][2][3] It was first recorded from the British Isles in about 1836.[4]

Distribution[edit]

Native to most of North America. Widely naturalised in Ireland and also in the British Isles (female plants only). Ireland: County Galway found at several sites along the Eglinton Canal, County Galway[5] County Down. and from the Lagan Canal near Lisburn, Ireland.[6]

Description[edit]

Young plants initially start with a seedling stem with roots growing in mud at the bottom of the water; further adventitious roots are produced at intervals along the stem, which may hang free in the water or anchor into the bottom. It grows indefinitely at the stem tips, and single specimens may reach lengths of 3 m or more.

The leaves are bright green, translucent, oblong, 6–17 mm long and 1–4 mm broad, borne in whorls of three (rarely two or four) round the stem.[7] It lives entirely underwater, the only exception being the small white or pale purple flowers which float at the surface and are attached to the plant by delicate stalks.

It is dioecious, with male and female flowers on different plants. The flowers have three small white petals; male flowers have 4.5-5 mm petals and nine stamens, female flowers have 2–3 mm petals and three fused carpels. The fruit is an ovoid capsule, about 6 mm long containing several seeds that ripen underwater. The seeds are 4–5 mm long, fusiform, glabrous (round), and narrowly cylindrical. It flowers from May to October.[1][2][3][8]

It grows rapidly in favorable conditions and can choke shallow ponds, canals, and the margins of some slow-flowing rivers. It requires summer water temperatures of 10–25 °C and moderate to bright lighting.[8]

It is closely related to Elodea nuttallii, which generally has narrower leaves under 2 mm broad. It is usually fairly easy to distinguish from its relatives, like the Brazilian Egeria densa and Hydrilla verticillata. These all have leaves in whorls around the stem; however, Elodea usually has three leaves per whorl, whereas Egeria and Hydrilla usually have four or more leaves per whorl. Egeria densa is also a larger, bushier plant with longer leaves.[9]

Cultivation and uses[edit]

It is frequently used as an aquarium plant. Propagation is by cuttings.[10]

It is an invasive species in Europe, Asia, Africa, and Australia. It was introduced into County Down, Ireland in about 1836, and appeared in Great Britain in 1841, spreading through both countries in ponds, ditches and streams, which were often choked with its rank growth.[8][11][9]

Other common names for this plant include Anacharis (an older name for the genus Elodea), water thyme, common elodea, and ditch moss.

References[edit]

  1. ^ a b Flora of North America: Elodea canadensis
  2. ^ a b Plants of British Columbia: Elodea canadensis
  3. ^ a b Jepson Flora: Elodea canadensis
  4. ^ Hackney, P. 1992.(Ed.) Stewart and Corry's Flora of the North-east of Ireland. Institute of Irish Studies and The Queen's University of Belfast. ISBN 0-85389-446-9 (HB)
  5. ^ Pybus, C. and O'Halloran, P. 2009. Distribution of some submeged aquatic macrophytes in the Eglinton Canal, Galway; Ir. Nat J. 30: 51 -53
  6. ^ Hackney, P. 1992
  7. ^ Rose, Francis (2006). The Wild Flower Key. Frederick Warne & Co. pp. 485–486. ISBN 978-0-7232-5175-0. 
  8. ^ a b c Huxley, A., ed. (1992). New RHS Dictionary of Gardening. Macmillan ISBN 0-333-47494-5.
  9. ^ a b Native Freshwater Plants: American Waterweed
  10. ^ Hiscock, P. (2003). Encyclopedia of Aquarium Plants Interpret Publishing, United States and Canada ISBN 0-7641-5521-0.
  11. ^ Flora of NW Europe: Elodea canadensis

Gallery[edit]

Public Domain This article incorporates text from a publication now in the public domainChisholm, Hugh, ed. (1911). Encyclopædia Britannica (11th ed.). Cambridge University Press 

Creative Commons Attribution Share Alike 3.0 (CC BY-SA 3.0)

Source: Wikipedia

Unreviewed

Article rating from 0 people

Average rating: 2.5 of 5

Names and Taxonomy

Taxonomy

Comments: Accepted by Kartesz (1994 and 1999) but overlooked in many floristic works. Possibly of hybrid origin (although not a simple F1 cross) (Cook and Urmi-Koning 1985).

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© NatureServe

Source: NatureServe

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Disclaimer

EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!