Equal-leaved Knotgrass - Polygonum depressum

    Alternative names
    Polygonum aviculare subsp. depressum and as Polygonum arenastrum

    Low mat-forming plant. Leaves elliptical to lanceolate, uniform. Flowers lateral, solitary or in small clusters, greenish white, or pinkish.

    Similar Species

    P aviculare, possibly P rurivagum which has occurred in VC55 in the past

    Identification difficulty
    ID guidance

    Achenes with 2 convex and 1 concave side; other minor differences

    Recording advice

    Specimen or photos needs to verified by CR. Plant must have achenes.


    Waste places, roadsides and pathways, open and bare places etc.

    When to see it

    July to September.

    Life History


    UK Status

    Fairly frequent in Britain.

    VC55 Status

    In the 1979 Flora survey of Leicestershire it was found in 147 of the 617 tetrads.

    In the current Checklist (Jeeves, 2011) it is listed as Alien (archaeophyte); locally frequent

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    Leicestershire & Rutland Map

    MAP KEY:

    Yellow squares = NBN records (all known data)
    Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

    UK Map