Persicaria punctata | dotted knotweed

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36.056316, -112.08046
36° 3′ 22.77″ N, 112° 4′ 49.66″ W
36 3 22.77, 112 4 49.66

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When a plant has clusters of small flowers you should measure the size of a flower even though it may be very small. Many plants have flowers that are not obvious and in that case we put them in the "Very Small" category.

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Habitat	Description
Alpine	Growing above timberline
Aquatic	Growing in or floating in water
Brush	Scab, chaparral, thicket, clearcut, scrub and similar terms
Cliff	On a cliff, rock wall or similar surface
Desert	Described as a desert, wash, arid or very dry area
Disturbed	Along a road, railroad, burned area, vacant lot and similar places
Epiphyte	Growing on a plant or on decaying plant material
Forest	In a grove, stand or woods or otherwise associated with trees
Grassland	A pasture, prairie, rangeland or steppe
Meadow	An area described as a meadow
Riparian	Near a stream, river, lake, seep or other wet area
Rocky	An outcrop, scree, talus area or other rocky area
Salt Marsh	An alkali or tidal area
Sand	An area described as sandy or a sand dune
Wetland	Marsh, swamp, bog, fen or wetland
Ignore	No habitat specified

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dotted knotweed

dotted knotweed Smartweed-Buckwheat Family
Persicaria punctata Polygonaceae
--show more--

common name
  •dotted knotweed
accepted scientific name
  •Persicaria punctata (Elliott) Small
rules for finding collection records
  •Polygonum punctatum (130)
  •Persicaria punctata (312)
family name
  •Polygonaceae

Image Author: ©2012 Peter M. Dziuk, Minnesota Wildflowers
Image License: Author's permission
Image Source

Category: Wildflowers
Flowers: No obvious petals, Five petals
Petal colors:

Flower size is about 0.13 inches
Leaf: Alternate, Simple
Plant Observed beginning of August thru end of May
Native to the Americas

How Likely at this Location (68%)

Name Match (100%)

Plant Showiness (36%)

Links to Plant Descriptions
Minnesota Wildflowers (6)
Illinois Wildflowers (2)
Flora of North America
Instituto Darwinion (10)
E-Flora BC
Wikipedia English
Weeds of Mexico [es]
Yavapai County Plants (2)
Kansas Wildflowers (5)
Jepson
UW Herbarium (15)
WFO Monographs
SEINet (2)

Links to Plant Photos
Cal Photos (43)
iNaturalist (21)
Starr Environmental (20)
Flora Uruguay (8)
Flora de Santa Catarina (12)
Gila Wilderness (4)
Peter Bryant (6)
Flora Digital (2)
Argentina nativa (2)
Wikimedia Commons (3)
Weeds of Mexico (2)
sib.gob.ar (1)
Delaware Wildflowers (1)

Where the plant has been found

Credits

Habitat where plant was found

Cliff

Wetland

Riparian

Elevation (m) vs. Time of Observation (Flowering)

Credits