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


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

UK Map