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Index
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Caryophyllales
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Polygonaceae
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genus
Polygonum
Genus
Polygonum is a genus of about 130 species of flowering plants in the buckwheat and knotweed family Polygonaceae. Common names include knotweed and knotgrass. In the Middle English glossary of herbs Alphita, it was known as ars-smerte. There have been various opinions about how broadly the genus should be defined. For example, buckwheat has sometimes been included in the genus as Polygonum fagopyrum. Former genera such as Polygonella have been subsumed into Polygonum; other genera have been split off.
From Wikipedia ,
licensed under CC BY-SA 4.0
Plants in this genus
1 plant
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Research on Polygonum
1 article
What science is finding about Polygonum
Every article on Plant News that mentions a member of this genus, newest first.
All topics
invasive-species1
native-plants1
urban-ecology1
Latest finding
A verified sighting of prostrate knotweed, a common sidewalk and driveway weed, was logged in Bozeman, Montana. It's a research-grade record, meaning experts confirmed the identification, adding a solid data point for tracking where this widespread weed grows.
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Most researched in this genus
Plant News
Plant science intelligence curated from PubMed, iNaturalist, bioRxiv, and more.
Sources
Abstracts are copyright their respective publishers. Plant descriptions from Wikipedia under CC BY-SA 4.0 . Credited iNaturalist photos name their photographer and licence. Some plant pages still show an older, uncredited iNaturalist photo until a credited one replaces it.
System
Generated: 2026-10-24 08:14
Articles: 6130
Synthesized: 6076
© 2026 Plant News. Plant science for plant people. Plant descriptions from Wikipedia are licensed under CC BY-SA 4.0. Credited iNaturalist photos name their photographer and licence. Some plant pages still show an older, uncredited iNaturalist photo until a credited one replaces it.
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