Comm. Elodea canadensis (American waterweed or Canadian waterweed or pondweed) is a perennial aquatic plant, or submergent macrophyte, native to most of North America. Elodea canadensis Michx. 1992.(Ed.) Propagation is by cuttings. (1.7 cm) long and 0.16 in. Hydrilla (Hydrilla verticillata), Common Waterweed (Elodea canadensis). 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. planchonii (Caspary) Farwell, Amer. Elodea minor. The Alabama Plant Atlas is a source of data for the distribution of plants within the state as well as taxonomic, conservation, invasive, and wetland information for each species. angustifolia (Muhl.) Set plants out in pots or containers at the bottom of the water body or float plant cuttings/fragments in the water. Four varieties are recognized by Missouri Botanical Garden (2019): var. 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.[13][10][11][14]. The specimen shown in the photograph above was removed from French Hill Pond for study in October 2011. [9] 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. Plants also produce buds (turions) which sink to the bottom in fall, overwinter as dormant buds and produce new plants in spring. The fruit is an ovoid capsule, about 6 mm long containing several seeds that ripen underwater. Elodea canadensis, commonly called Canadian pondweed, is a submerged aquatic perennial that has become a popular plant for water gardens and cool water aquariums. Male flowers are rare, so propagation more often takes place by stem fragmentation than sexually. & Schmidt , Udora canadensis (Michaux) Nuttall 1818 Common names: Almindelig vandpest (Danish), American elodea, American elodea (United States), American elodea (English), American waterweed (Germany), anacharis (English), brede waterpest (Dutch), broad waterweed (English-United States), Canada waterweed (United States), Canadian pondweed (United States), Canadian pondweed … Common Name: CANADIAN WATERWEED: Status: Native, OBL (NWPL) Specimen: View details of USF Herbarium specimens ** Not applicable or data not available. H. St. John. All Images Enlarge Image. Infestations of this species compete with desirable aquatic plants, resulting in modified aquatic flora assemblages and habitats. bot. Stewart and Corry's Flora of the North-east of. Flora of Siberia (English translation) Liberty Hyde Bailey Hortorium. The website also provides access to a database and images of plants photos and herbarium specimens found at … [10], It is closely related to Elodea nuttallii, which generally has narrower leaves under 2 mm broad. [11], It is frequently used as an aquarium plant. Structural class. 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. The joints of … [1][2][3] It has been introduced widely to regions outside its native range and was first recorded from the British Isles in about 1836. Elodea canadensis Michx. Elodea planchonii Casp. and from the Lagan Canal near Lisburn, Northern Ireland.[8]. It is dioecious, with male and female flowers on different plants. Egeria densa is also a larger, bushier plant with longer leaves. Propagation is by cuttings. latifolia (Casp.) Like most aquatic weeds, high nutrient loads in the water will result in more vigorous growth of this species. Pybus, C. and O'Halloran, P. 2009. This aquatic herb has stems that branch out between 20 and 30 cm in length, which tends to form dense monospecific stands that can cover hundreds of acres (DAISIE, 2009). Details; Images (8) Synonyms (1) References (20) Homonyms (1) Subordinate Taxa; Specimens; Distributions (51) ... Common Names: Canada waterweed (English, Canada) Canada Weed Committee. This plant is sometimes sold in small bunches for large aquariums where it provides interesting foliage and serves as both an oxygenator and water clarifier, although its close relative, Egeria densa (Brazilian waterweed marketed under the name of anacharis), is more commonly sold for this purpose.Genus name comes from the Greek word helodes meaning marshy or bred in marshes.Specific epithet means of Canada. Philotria occidentalis. It is similar to its relative, Elodea canadensis. One should note that Elodea canadensis is an important food for ducks and other water birds. The seeds are 4–5 mm long, fusiform, glabrous (round), and narrowly cylindrical. 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. Source: Common waterweed (Elodea canadensis), a native aquatic plant, grows … Common name. Flora category. U.S. Weed Information. By absorbing nutrients, it helps control algae and keep waters clear. Elodea (Elodea canadensis) is currently most troublesome in eas… – Canadian waterweed. Europe has been particularly affected with the first record dating back as far as 1836. [6], Records of the species' presence in Ireland include: County Galway, found at several sites along the Eglinton Canal, County Galway,[7] Female flower of Elodea nuttallii. It flowers from May to October. Elodea canadensis Michx. planchonii Elodea canadensis Michaux, var. Suggested Use: Water Plant, Naturalize, Rain Garden. Name: Date: Period: Measuring the Rate of Photosynthesis in Elodea Background Reading: Read the following passage. Elodea (Elodea canadensis)is regarded as an environmental weed in Victoria, New South Wales and Tasmania. It requires summer water temperatures of 10–25 °C and moderate to bright lighting. Common name English : Canadian waterweed, American Pondweed, American Waterweed, Canadian Pondweed, Canadian Waterweed, canadian pondweed العربية : أيلود كندي Elodea nuttallii. Anacharis is often confused with other invasive aquatic plants, such as Brazilian elodea, Egeria, and Hydrilla. Casp. Midl. NATIVE Leaf: generally crowded at stem tips, 3 per node on mid, upper stems; blade generally 5--15 mm, 2--5 mm wide, linear, obtuse or abruptly pointed at tip, flaccid or not. Common Name: COMMON WATERWEED: Coefficient of Conservatism: 1 Coefficient of Wetness: -5 Wetness Index: OBL Physiognomy: Nt P-Forb. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. Overview Appearance Elodea canadensis is a perennial aquatic plant, native to most of North America. 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. County Down. Classified in the frog’s-bit family (Hydrocharitaceae), Elodea is native to the Americas and is also widely used as aquarium vegetation and laboratory demonstrations of cellular activities. Elodea canadensis Michx. ... Elodea canadensis Michaux. common elodea, Canadian waterweed, broad waterweed, Canada waterweed. The name Elodea canadensis Michx. Hortus third. The plant has two German names which are rather interesting: "Wasserpest" ("water pest") hints to its invasive character, while "Entenflott" ("duck float") is linked to its floating existance on … Also commonly called waterweed or anacharis. The water parameters or the substrate have no effect on the development of the plant. is universally accepted for this common, widespread waterweed. Common names: Elodea (pronounced el-oh-DEE-a), American elodea, common elodea, anacharis, Canada waterweed. This plant can be weedy or invasive according to the authoritative sources noted below.This plant may be known by one or more common names in different places, and some are listed above. Legal Status. NVS code Help. Plants often remain green in winter and will overwinter under a cover of ice. E. canadensis is widely distributed on most continents. Canadian elodea, anacharis, Canadian water pest. It blooms in the spring (Wunderlin, 2003). Elodea canadensis. Weed status Elodea canadensis is a serious weed in more than 45 countries around the world, where it obstructs waterways and irrigation. It lives in fresh water. gigantea Hort. APNI* Description: Attached dioecious submerged aquatic perennial; branched stems to 3 (-6) m long with crowded internodes near the apex and producing long thread-like, often reddish, roots at the lower nodes. weeds Canada 1–67. By absorbing nutrients, it helps control algae and keep waters clear. APNI* Synonyms: Anacharis canadensis (Michx.)Planch. G. E. Crow flower. Vascular – Exotic. W shore of Coffin Lake W of Colville, WA on the rd to Tiger; N 48.575995 W 117.555233 – Stevens Co. – 10/3/2011; Man mowing the grass The genus name (Elodea) is from the Greek for "marsh." 2000-. It is usually fairly easy to distinguish from its relatives, like the Brazilian Egeria densa and Hydrilla verticillata. Not recommended for large ponds where population control can be more difficult. Add comments or questions in the space in the right margin. The leaves can grow up to 0.67 in. [1][2][3][10], It grows rapidly in favorable conditions and can choke shallow ponds, canals, and the margins of some slow-flowing rivers. The temperature also plays a role because the plant does not like heat. Colonies in the wild provide excellent cover for fish, small crustaceans, insect larvae and snails. Anacharis occidentalis. Elodea columbiana. Elodea linearis (Rydb.) Elodea canadensis MICHAUX 1803. Farw., var. Remove or clip stems as needed to control population. Ditch with a dense colony of flowering plants, Illustration showing leaf and flower detail, Hackney, P. Location: Found in lakes in depths up to 10 feet, often in hard water, and near stream inlets. Distribution of some submerged aquatic macrophytes in the Eglinton Canal, Galway; "First confirmed record of Elodea canadensis Michx. Common Name: Common Waterweed: Scientific Name: Elodea canadensis Native or Non-native: Native: Illustration: Link to larger illustration: Elodea canadensis Michx. It commonly invades still or slow-moving freshwater environments and thrives in temperate regions. Recorded up to 8.2 m deep in Michigan, and up to 14 m elsewhere. Its stems can reach 4 meters or 13 ft in length. Subordinate Taxa. … Kartesz, J. T. 1994. Naturalist 10: 203. Thrives in cool water. Synonymous with and formerly known as Anacharis canadensis. Plants are dioecious with male and female flowers appearing on separate plants. Only the lighting will be important. [5] Since then, the species' presence has been confirmed in all continental European countries. McGregor, R. L. et al. It is rare in Florida, occurring in some streams in Jackson County. [12], It is an invasive species in Europe, Asia, Africa, and Oceania. 1927. 1976. Canadian waterweed. Philotria minor. Krasnoborov, I. M., ed. The Garden wouldn't be the Garden without our Members, Donors and Volunteers. Philotria nuttallii. Elodea Canadensis only grows in submerged conditions. It is frequently used as an aquarium plant. Synonyms: Anacharis canadensis, A. alsinastrum, Serpicula occidentalis, Elodea latifolia Natural Distribution & Ecology: From North America, introduced elsewhere, esp. Reproduction: Vegetative. Elodea is present in virtually every region of North America (Kartesz, 1999). is introduced into Europe and the United States. 1969. Elodea canadensis is widely distributed on most continents, while E. nuttallii is established in Europe and Asia. In Bailey, var. Tiny, apetalous greenish-white flowers appear from July to September. Elodea canadensis Michx. Philotria canadensis (Michx.) This plant has no children. The common name for the American or Canadian waterweed, Elodea canadensis, is Anacharis — an older term for the genus. Philotria linearis Rydb. Large aquariums. Canadian pondweed. Elodea occidentalis. Anacharis canadensis (Michx.) Europe; as you might guess, a cold water species (45-65 F.). Plants spread rapidly and can take over larger bodies of water, but are relatively easy to control in small water gardens. E. nuttallii is established in Europe and Asia. Australian plant common name database (on-line resource). An older name for this genus is Anacharis, which serves as a common name in North America. Elodea canadensis may be confused with Hydrilla verticillata or Egeria densa. The Common Waterweed (Elodea canadensis) also called the Canadian Waterweed or American Waterweed is of the order Hydrocharitales and Tape-grass Family (Hydrocharitaceae). Common Names. Scientific Name and Common Name; Kingdom: Plantae – Plants Subkingdom: Tracheobionta – Vascular plants Superdivision: Spermatophyta – Seed plants Division: Magnoliophyta – Flowering plants Class (Hydrocharitaceae) in Greece", https://en.wikipedia.org/w/index.php?title=Elodea_canadensis&oldid=993155722, Wikipedia articles incorporating a citation from the 1911 Encyclopaedia Britannica with Wikisource reference, Wikipedia articles incorporating text from the 1911 Encyclopædia Britannica, Creative Commons Attribution-ShareAlike License, This page was last edited on 9 December 2020, at 02:13. Britton. Elodea canadensis is a submerged, rather densely bushy, aquatic perennial (CABI, 2005). Foliage The leaves are a bright, translucent green. Plant roots may be anchored in the muddy bottoms of small ponds. It produces fragile, branching, tangled stems to 3.5’ long (10-12’ in the wild) densely clad with short, drooping, lance-shaped to ovate dark green leaves (to 5/8” long) in whorls of three. In waters of almost every kind and depth, including the Great Lakes. Elodea is a genus of 6 species of aquatic plants often called the waterweeds described as a genus in 1803. It grows indefinitely at the stem tips, and single specimens may reach lengths of 3 m or more. Family: Hydrocharitaceae: Common Names: Canadian, Rocky Mountain, or common waterweed: Eastern Washington: Native: Conservation Status: Notes: Click on any image to enlarge it. Elodea canadensis, commonly called Canadian pondweed, is a submerged aquatic perennial that has become a popular plant for water gardens and cool water aquariums. Water gardens. Planch. When pollination does occur, it is waterborne (pollen drifts from male to female flowers). ... Elodea canadensis var. Other common names for this plant include Anacharis (an older name for the genus Elodea), water thyme, common elodea, and ditch moss. It can reach up to 9.8 ft. (3 m) in length. Monocotyledonous Herbs. [4], The native range of the species lies within North America, but it has been introduced in many parts of the world either intentionally or not. Scientific Name: Elodea canadensis Michx. Native to North America, but widely naturalized in Europe. Common Name(s): broad waterweed [English] Canada waterweed [English] Canadian waterweed [English] Taxonomic Status: Current Standing: accepted ... Elodea canadensis : Source: NODC Taxonomic Code, database (version 8.0) Acquired: 1996 : Notes: Reference for: Elodea canadensis Elodea callitrichoides (Rich.) nam. Easily grown as a submerged aquatic, either anchored or free-floating, in water gardens in full sun. : Read the following passage status Elodea canadensis is a perennial aquatic plant Naturalize. Rate of Photosynthesis in Elodea Background Reading: Read the following passage the North-east of,! Larger bodies of water, and up to 14 m elsewhere: Period: Measuring the Rate of Photosynthesis Elodea... 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