Code
PTMNO
Growth form
geophyte
Biological cycle
vivacious
Habitat
Aquatic
PTMNO
Growth form
geophyte
Biological cycle
vivacious
Habitat
Aquatic
🗒 Synonyms
| synonym | Potamogeton × fluitans f. brevifolius G.Fisch. |
| synonym | Potamogeton × fluitans f. congestus G.Fisch. |
| synonym | Potamogeton × fluitans f. latifolius G.Fisch. |
| synonym | Potamogeton × fluitans f. spathulifolius G.Fisch. |
| synonym | Potamogeton × fluitans subsp. americanus Graebn. |
| synonym | Potamogeton × fluitans var. novaeboracensis (Morong) Graebn. |
| synonym | Potamogeton × fluitans var. robustus Tab.Morais |
| synonym | Potamogeton × fluitans var. stagnatilis W.D.J.Koch |
| synonym | Potamogeton americanus Cham. & Schltdl. [Illegitimate] |
| synonym | Potamogeton americanus Cham. & Schltdl., nom. illeg. |
| synonym | Potamogeton americanus subsp. mascarensis (Cham. & Schltdl.) A.Benn. |
| synonym | Potamogeton americanus var. novaeboracensis (Morong) A.Benn. |
| synonym | Potamogeton americanus var. thunbergii (Cham. & Schltdl.) A.Benn. |
| synonym | Potamogeton canariensis Link |
| synonym | Potamogeton drucei Fryer |
| synonym | Potamogeton fluitans f. brevifolius G.Fisch. |
| synonym | Potamogeton fluitans f. congestus G.Fisch. |
| synonym | Potamogeton fluitans f. latifolius G.Fisch. |
| synonym | Potamogeton fluitans f. spathulifolius G.Fisch. |
| synonym | Potamogeton fluitans subsp. americanus Graebn. |
| synonym | Potamogeton fluitans var. novaeboracensis (Morong) Graebn. |
| synonym | Potamogeton fluitans var. robustus Tab.Morais |
| synonym | Potamogeton fluitans var. stagnatilis W.D.J.Koch |
| synonym | Potamogeton indicus Roxb. [Illegitimate] |
| synonym | Potamogeton indicus Roxb., nom. illeg. |
| synonym | Potamogeton insulanus Hagstr. |
| synonym | Potamogeton leschenaultii Cham. & Schltdl. |
| synonym | Potamogeton lonchites Tuck. |
| synonym | Potamogeton lonchites var. novaeboracensis Morong |
| synonym | Potamogeton machianus Lowe ex Graebn. [Invalid] |
| synonym | Potamogeton machianus Lowe ex Graebn., nom. inval. |
| synonym | Potamogeton malaianus Miq. |
| synonym | Potamogeton mascarensis Cham. & Schltdl. |
| synonym | Potamogeton mexicanus A.Benn. |
| synonym | Potamogeton montanus C.Presl |
| synonym | Potamogeton natans f. capensis Kunth |
| synonym | Potamogeton natans var. canariensis (Link) T.Durand & Schinz |
| synonym | Potamogeton natans var. capensis T.Durand & Schinz, nom. illeg. |
| synonym | Potamogeton natans var. mexicanus M.Martens & Galeotti |
| synonym | Potamogeton natans var. serotinus (Schrad. ex Schult. & Schult.f.) Boiss. |
| synonym | Potamogeton nodosus f. angustissimus Hagstr. |
| synonym | Potamogeton nodosus f. brevifolius (G.Fisch.) Soó |
| synonym | Potamogeton nodosus f. congestus (G.Fisch.) Soó |
| synonym | Potamogeton nodosus f. latifolius (G.Fisch.) Soó |
| synonym | Potamogeton nodosus f. spathulifolius (G.Fisch.) Soó |
| synonym | Potamogeton nodosus var. stagnatilis (W.D.J.Koch) Soó |
| synonym | Potamogeton nuttallii var. portoricensis (Graebn.) Graebn. |
| synonym | Potamogeton occidentalis Sieber ex Cham. & Schltdl. |
| synonym | Potamogeton owaihiensis Cham. & Schltdl. |
| synonym | Potamogeton pennsylvanicus var. portoricensis Graebn. |
| synonym | Potamogeton pensylvanicus var. portoricensis Graebn. |
| synonym | Potamogeton peruviana C.Presl |
| synonym | Potamogeton petiolaris Raf., nom. utique rej. |
| synonym | Potamogeton rotundatus Hagstr. |
| synonym | Potamogeton roxburghianus Schult. & Schult.f. |
| synonym | Potamogeton semicoloratus A.Benn. |
| synonym | Potamogeton serotinus Schrad. |
| synonym | Potamogeton serotinus Schrad. ex Schult. & Schult.f. |
| synonym | Potamogeton stagnorum Hagstr. |
| synonym | Potamogeton syriacus Cham. & Schltdl. |
| synonym | Potamogeton thunbergii Cham. & Schltdl. |
| synonym | Spirillus lonchites (Tuck.) Nieuwl. |
🗒 Common Names
| Anglais / English |
|
| French |
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| Malgache |
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📚 Overview
Description
Global description
Potamogeton nodosus is an aquatic vivacious plant with long slender rhizomes, with floating leaves and small emerged spikes. The stems bear leaves of two kinds: submerged, reduced to an elongated thin blade; floating leaves with very long petiole, flourished in developed ovate blade. The inflorescence is a spike emerging 3 to 5 cm long, surrounded by a basal sheath.
First leaves
The seedlings can come from the fragmentation of rhizomes from mother plants or seeds. First leaves simple, alternate, carried by a petiole of 1 to 5 cm long or more, depending on water depth. The first leaf has a blade elliptical at the top and wedged at the base, 1.5 to 2 cm long and 7 to 10 mm wide, reddish green in colour. The second leaf has a blade reaching 2 to 3 cm long and 1 to 1.5 cm wide. The leaves are fitted with long lanceolate stipules of 1 cm.
General habit
Vivacious plant with long slender rhizomes and floating leaves, forming a mat on the surface of the water.
Underground system
Simple or branched roots from the nodes. Rhizomes slender, developed and branched, internodes more or less long.
Stem
Stem is cylindrical, slender, glabrous, more or less elongated depending on the water depth and extensively branched.
Leaf
Simple, alternate leaves; terminal leaves are opposite. They have two types of morphology. Submerged leaves (in deep water) are reduced to an elongated thin blade, widely linear of 20 cm long and 4 cm wide and translucent. They are carried by a long stalk at its base with a pair of long oblong stipules. Floating leaves are carried by a long convex petiole above and has long lanceolate stipules. The blade is leathery, oval to elliptical, 15-25 cm long and 6-10 cm wide. The apex and base of the blade are wedged, the margin is whole and both sides are glabrous. The upper side is marked by numerous parallel arcuate ribs.
Inflorescence
Inflorescence consists of a simple, cylindrical, emerged and erect spike, of 3 to 5 cm long, carried by a long peduncle often thicker than the stem. The flowers are small, consisting of 4 concave scales, 4 stamens and 2 to 4 free ovoid carpels, 3.5 mm long and 2.5 mm wide, keeled and topped with a slightly curved bill.
Fruit
The fruit is a small drupe, ovoid, indehiscent, 3.5 mm long and 2.5 mm wide, containing a single seed.
Seed
One seed per drupe.
Potamogeton nodosus is an aquatic vivacious plant with long slender rhizomes, with floating leaves and small emerged spikes. The stems bear leaves of two kinds: submerged, reduced to an elongated thin blade; floating leaves with very long petiole, flourished in developed ovate blade. The inflorescence is a spike emerging 3 to 5 cm long, surrounded by a basal sheath.
First leaves
The seedlings can come from the fragmentation of rhizomes from mother plants or seeds. First leaves simple, alternate, carried by a petiole of 1 to 5 cm long or more, depending on water depth. The first leaf has a blade elliptical at the top and wedged at the base, 1.5 to 2 cm long and 7 to 10 mm wide, reddish green in colour. The second leaf has a blade reaching 2 to 3 cm long and 1 to 1.5 cm wide. The leaves are fitted with long lanceolate stipules of 1 cm.
General habit
Vivacious plant with long slender rhizomes and floating leaves, forming a mat on the surface of the water.
Underground system
Simple or branched roots from the nodes. Rhizomes slender, developed and branched, internodes more or less long.
Stem
Stem is cylindrical, slender, glabrous, more or less elongated depending on the water depth and extensively branched.
Leaf
Simple, alternate leaves; terminal leaves are opposite. They have two types of morphology. Submerged leaves (in deep water) are reduced to an elongated thin blade, widely linear of 20 cm long and 4 cm wide and translucent. They are carried by a long stalk at its base with a pair of long oblong stipules. Floating leaves are carried by a long convex petiole above and has long lanceolate stipules. The blade is leathery, oval to elliptical, 15-25 cm long and 6-10 cm wide. The apex and base of the blade are wedged, the margin is whole and both sides are glabrous. The upper side is marked by numerous parallel arcuate ribs.
Inflorescence
Inflorescence consists of a simple, cylindrical, emerged and erect spike, of 3 to 5 cm long, carried by a long peduncle often thicker than the stem. The flowers are small, consisting of 4 concave scales, 4 stamens and 2 to 4 free ovoid carpels, 3.5 mm long and 2.5 mm wide, keeled and topped with a slightly curved bill.
Fruit
The fruit is a small drupe, ovoid, indehiscent, 3.5 mm long and 2.5 mm wide, containing a single seed.
Seed
One seed per drupe.
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
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No Data
📚 Nomenclature and Classification
No Data
📚 Natural History
Life Cycle
Life cycle
Vivacious
Madagascar: Potamogeton nodosus flowers from February or March
Mayotte: Potamogeton nodosus flowers from February to April and fruits from April to May.
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
There is content in another language. Please click here to read it. (Français)
Reproduction
There is content in another language. Please click here to read it. (Français)
Potamogeton nodosus is a vivacious aquatic plant that spreads by rhizomes rich in reserve or by seed. Its spread is favored by tillage of rice fields during the dry season. The plant tolerates long drying of rice fields and grows quickly after puddling and installation of culture.
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
Morphology
Growth form
Running plant
Floating plant
Leaf arrangement
Opposite
Alternate
Leaf type
Simple
Type of prefoliation
Leaf ratio medium
Narrow leaf
Equality of opposite leaves
Opposite leaves equal
Latex
Without latex
Stem section
Round
Root type
Rhizome
Hollow or solid stem
Solid stem
Stipule type
Lanceolate stipule
Leaf attachment type
with petiole
Lamina base
rounded
Lamina margin
entire
Lamina apex
acute
obtuse
Upperface pilosity
Glabrous
Lowerface pilosity
Glabrous
Simple leaf type
Lamina elliptic
Lamina section
flat
Lamina Veination
in arc
Parallel
Flower color
Brown
Green
Inflorescence type
Spike
Stem pilosity
Glabrous
Life form
Broadleaf plant
Geophytic plant
Look Alikes
In Mauritius and Reunion, Potamogeton thunbergii Cham. & Schlechtd., native species of ponds and estuaries of calm rivers resembles P. nodosus. It is essentially differentiated by its smaller leaves.
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
There is content in another language. Please click here to read it. (Français)
Ecology
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Comoros: Absent.
Madagascar: Potamogeton nodosus is a common aquatic plant on the shallows, on the highlands between 800 m and 1500 m altitude. It settled in lowland rice fields, ponds and swamps. On the highlands of Madagascar, P. nodosus develops rapidly to cover the surface of the water after rice transplanting. It grows on all mineral hydromorphic soils or more or less organic, of variable fertility. It tolerates many sunny rice fields or temporarily shaded by trees.
Mauritius: Absent.
Mayotte: Potamogeton nodosus is an indigenous species present along a river of Grande Terre.
Reunion: Absent.
Seychelles: Present in the stream.
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
No Data
📚 Habitat and Distribution
General Habitat
Habitat
Aquatic
Description
Geographical distibution
Madagascar
Seychelles
Origin
Potamogeton nodosus is native to Eurasia and America.
Worldwide distribution
Eurasia, America, Africa, Southeast Asia, the Pacific, Australia, South-West Indian Ocean.
Potamogeton nodosus is native to Eurasia and America.
Worldwide distribution
Eurasia, America, Africa, Southeast Asia, the Pacific, Australia, South-West Indian Ocean.
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
There is content in another language. Please click here to read it. (Français)
No Data
📚 Occurrence
No Data
📚 Demography and Conservation
Risk Statement
Global harmfulness
Once established, Potamogeton nodosus tends to form a dense stand, forming a true continuous mat on the surface of the water. This weed is present at high abundance. It is virtually impossible to get rid of this weed by mechanical or manual means.
Local harmfulness
Comoros: Absent.
Madagascar: Potamogeton nodosus invades marshland rice or irrigated rice in semi-intensive farming with low fertilizer input, with low to medium frequency, but often with high abundance. Once installed, it tends to form a dense stand more or less continuous, forming a true continuous mat on the surface of the water. The fragility of the vegetative system makes mechanical or manual weeding inefficient, which contributes to the vegetative growth of the plant by fragmentation of rhizomes.
Mauritius: Absent.
Reunion: Absent.
Seychelles: It is not present in crops.
Once established, Potamogeton nodosus tends to form a dense stand, forming a true continuous mat on the surface of the water. This weed is present at high abundance. It is virtually impossible to get rid of this weed by mechanical or manual means.
Local harmfulness
Comoros: Absent.
Madagascar: Potamogeton nodosus invades marshland rice or irrigated rice in semi-intensive farming with low fertilizer input, with low to medium frequency, but often with high abundance. Once installed, it tends to form a dense stand more or less continuous, forming a true continuous mat on the surface of the water. The fragility of the vegetative system makes mechanical or manual weeding inefficient, which contributes to the vegetative growth of the plant by fragmentation of rhizomes.
Mauritius: Absent.
Reunion: Absent.
Seychelles: It is not present in crops.
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
There is content in another language. Please click here to read it. (Français)
No Data
📚 Uses and Management
Management
Local management
Madagascar: On the highlands of Madagascar, in irrigated or marshland rice cultivation, weeding Potamogeton nodosus with the rotary hoe is inefficient. Rice-fish farming is very effective if we can properly control the water supply of the rainy season in rice fields.
Madagascar: On the highlands of Madagascar, in irrigated or marshland rice cultivation, weeding Potamogeton nodosus with the rotary hoe is inefficient. Rice-fish farming is very effective if we can properly control the water supply of the rainy season in rice fields.
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
There is content in another language. Please click here to read it. (Français)
No Data
📚 Information Listing
Global Biodiversity Information Facility (GBIF)
There is content in another language. Please click here to read it. (Français)
Thomas Le Bourgeois
| Attributions | |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
References
- Le Bourgeois, T., A. Carrara, M. Dodet, W. Dogley, A. Gaungoo, P. Grard, Y. Ibrahim, E. Jeuffrault, G. Lebreton, P. Poilecot, J. Prosperi, J. A. Randriamampianina, A. P. Andrianaivo and F. Théveny (2008). Advent-OI : Principales adventices des îles du sud-ouest de l'Océan Indien. Cédérom. Montpellier, France, Cirad ed.
- Barthelat, F. 2019. La Flore illustrée de Mayotte. Meze, Paris, France, Collection Inventaires et Biodiversité, Biotope – Muséum national d’Histoire naturelle. 687 p.
- http://en.wikipedia.org/wiki/Potamogeton_nodosus
- https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:603330-1
Information Listing > References
- Le Bourgeois, T., A. Carrara, M. Dodet, W. Dogley, A. Gaungoo, P. Grard, Y. Ibrahim, E. Jeuffrault, G. Lebreton, P. Poilecot, J. Prosperi, J. A. Randriamampianina, A. P. Andrianaivo and F. Théveny (2008). Advent-OI : Principales adventices des îles du sud-ouest de l'Océan Indien. Cédérom. Montpellier, France, Cirad ed.
- Barthelat, F. 2019. La Flore illustrée de Mayotte. Meze, Paris, France, Collection Inventaires et Biodiversité, Biotope – Muséum national d’Histoire naturelle. 687 p.
- http://en.wikipedia.org/wiki/Potamogeton_nodosus
- https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:603330-1
Images
There is content in another language. Please click here to read it. (Français)
Herbarium pictures ReCOLNAT: https://explore.recolnat.org/search/botanique/simplequery=Potamogeton%2520nodosus
Thomas Le Bourgeois
| Attributions | |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
No Data
🐾 Taxonomy
| Root | Root |
| Kingdom | Plantae |
| Phylum | Tracheophyta |
| Class | Liliopsida |
| Order | Alismatales |
| Family | Potamogetonaceae |
| Genus | Potamogeton |
| Species | Potamogeton nodosus Poir. |
📊 Temporal Distribution
📷 Related Observations
