Lesser Knotweed (Persicaria campanulata) - Detail

Species Detail - Lesser Knotweed (Persicaria campanulata) - Species information displayed is based on the dataset "Vascular plants: Online Atlas of Vascular Plants 2012 Onwards".

Terrestrial Map - 10km

Distribution of the number of records recorded within each 10km grid square (ITM).

Live Map

Marine Map - 50km

Distribution of the number of records recorded within each 50km grid square (WGS84).

Live Map

Species image

Scientific Name Persicaria campanulata

Common Name Lesser Knotweed

Taxon Version Key NHMSYS0000461600 UnverifiedUnverified

Synonyms Aconogonon campanulatum (Hook. f.) H. Hara, Polygonum campanulatum Hook. f., Polygonum campanulatum Hook f.

Designations N/A

Abbreviation pecam

Authority (Hook. f.) Ronse Decr.

Group flowering plant

Rank Species

Number Of Records 36

Number Of 10Km Squares 26

Number Of 50Km Squares 20

Oldest Record 09/07/2014

Newest Record 17/09/2024

Phenology - earliest record (across all datasets) 13 February (recorded in 2019)

Phenology - latest record (across all datasets) 26 November (recorded in 2023)

Species Profiles

Citation Collated by the National Biodiversity Data Centre from different sources, Vascular plants: Online Atlas of Vascular Plants 2012 Onwards, National Biodiversity Data Centre, Ireland, Lesser Knotweed (Persicaria campanulata), accessed 21 April 2025, <https://maps.biodiversityireland.ie/Dataset/409/Species/43868>

Species Detail - Lesser Knotweed (Persicaria campanulata) - Species information displayed is based on the dataset "Vascular plants: Online Atlas of Vascular Plants 2012 Onwards".

Terrestrial Map - 10km

Marine Map - 50km

Species image

Records per month (across all datasets)

Records per year (across all datasets)