Irish wildflowers

Knotgrass, Polygonum aviculare subsp littorale
Photographs: Inishannon, Co. Cork

Knotgrass sub species
Polygonum aviculare subsp. littorale
Family: Polygonaceae

Flowering time: July - October. Annual. Native

A coastal sub-species of Knotgrass, P. aviculare but it has smaller flowers, leaves without recurved margins and prostrate growth. Mature fruits project from the old flowers but they are shorter than those of Polygonum oxyspermum.

Found on coastal sand and shingle. Identification by Alan Silverside, BSBI

Similar: Ray's Knotgrass, Polygonum oxyspermum has larger fruits and flowers and leaves with recurved margins

Knotgrass, Polygonum aviculare subsp littorale

Knotgrass, Polygonum aviculare subsp littorale
Knotgrass, Polygonum aviculare subsp. littorale

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