prostrate knotweed

Polygonum aviculare

Member of common knotgrass complex (complex Polygonum aviculare)
knotweeds (genus Polygonum)
knotweed family (family Polygonaceae)
dicots (class Magnoliopsida)
white, other colors in flowering plants

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• stem 8–16 ribbed
• a complex of mostly self-propagating plants with many sympatric and intergrading forms

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Chris’s observations: 3 (none are research grade)

Locations:

• Sierra Vista OSP: 2
• Coal Creek OSP

Months:

• May: 2
• Jun.: 0
• Jul.: 0
• Aug.: 0
• Sep.: 1

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Taxon info: iNaturalist – Calflora – CalPhotos – Jepson eFlora – FNA

Bay Area species: iNaturalist – Calflora