water smartweed
(Persicaria amphibia)
Conservation • Wetland • Description • Habitat • Ecology • Use • Distribution • Taxonomy
Conservation Status |
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| IUCN Red List | LC - Least Concern |
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| NatureServe | N5 - Secure SNR - Unranked |
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| Minnesota | not listed |
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Wetland Indicator Status |
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| Great Plains | OBL - Obligate wetland |
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| Midwest | OBL - Obligate wetland |
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| Northcentral & Northeast | OBL - Obligate wetland |
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Description |
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Water smartweed may be floating on water (aquatic), rising out of standing water (emergent), or growing in periodically inundated or merely permanently moist areas (terrestrial). The upper surface of the leaves are shiny. The inflorescence is long and is interrupted near the base. The flowers are pink to red. |
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Height |
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12″ to 60″ |
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Flower Color |
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Pink to red |
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Similar Species |
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Habitat |
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Wet to moist. Meadows, pond edges, marshes. |
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Ecology |
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Flowering |
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June to September |
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Pests and Diseases |
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Use |
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Distribution |
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Sources |
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| 8/15/2022 | ||||
Nativity |
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Native |
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Occurrence |
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Common and widespread |
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Taxonomy |
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| Kingdom | Plantae (green algae and land plants) | ||
| Subkingdom | Viridiplantae (green plants) | ||
| Infrakingdom | Streptophyta (land plants and green algae) | ||
| Superdivision | Embryophyta (land plants) | ||
| Division | Tracheophyta (vascular plants) | ||
| Subdivision | Spermatophytina (seed plants) | ||
| Class | Magnoliopsida (flowering plants) | ||
| Superorder | Caryophyllanae | ||
Order |
Caryophyllales (pinks, cactuses, and allies) | ||
Family |
Polygonaceae (knotweed) | ||
| Subfamily | Polygonoideae | ||
| Tribe | Persicarieae | ||
| Subtribe | Persicariinae | ||
Genus |
Persicaria (knotweeds, smartweeds, and waterpeppers) | ||
Subordinate Taxa |
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Most botanists recognize two North American varieties and one Eurasian variety. Others contend that the characters used to define the varieties, when including the Eurasian phenotype, form a continuous morphological gradation (cline), making recognition of the varieties untenable. |
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flanged smartweed (Persicaria amphibia var. stipulaceum) longroot smartweed (Persicaria amphibia var. emersum) water smartweed (Persicaria amphibia var. amphibia) |
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Synonyms |
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Persicaria amphibia var. emersa Persicaria amphibia var. stipulacea Persicaria coccinea Persicaria mesochora Persicaria muehlenbergii Persicaria muhlenbergii Persicaria nebraskensis Polygonum amphibium Polygonum amphibium ssp. laevimarginatum Polygonum amphibium var. coccineum Polygonum amphibium var. emersum Polygonum amphibium var. hartwrightii Polygonum amphibium var. stipulaceum Polygonum coccineum Polygonum coccineum var. pratincola Polygonum coccineum var. rigidulum Polygonum coccineum var. terrestre Polygonum fluitans Polygonum hartwrightii Polygonum inundatum Polygonum muehlenbergii Polygonum muehlenbergii var. terrestre Polygonum muhlenbergii Polygonum natans |
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Common Names |
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water knotweed water persicaria water smartweed |
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Visitor Photos |
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KKM |
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Growing near a creek |
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Luciearl |
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… growing in wetland, edge of my pond |
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MinnesotaSeasons.com Photos |
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Habitat |
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Plant |
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Inflorescence |
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Flowers |
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Leaves |
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Slideshows |
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| Polygonum amphibium stipulaceum WATER KNOTWEED Frank Mayfield |
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Visitor Videos |
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Share your video of this plant. |
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Other Videos |
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| Water Knotweed (Persicaria amphibia, synoniem: Polygonum amphibium) - 2012-08-04 W3stlander |
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About
Published on Aug 7, 2012 Persicaria amphibia (syn. Polygonum amphibium) is a species of flowering plant in the knotweed family known by several common names, including water knotweed, water smartweed, and amphibious bistort. ------------- |
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Created: Last Updated: © MinnesotaSeasons.com. All rights reserved. |