Illinois Natural History Survey - University of Illinois

Persicaria punctata
Red top
Taxonomy

Synonyms: Polygonum punctatum

Subspecific taxa:

Classification:

Other taxonomic & nomenclature sources: USDA PlantsITISThe Plant ListIPNI

Images

   
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Species Distribution
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County Map Legend
Absent:
Not known from county
Medium confidence:
Medium or unknown confidence;
often old records or unverifiable observations
Medium-high confidence:
Often observations by expert botanists
High confidence:
Often vouchered herbarium records
Planted / introduced:
Native species introduced outside historic range,
or only in planted locations within county (e.g., restorations)
Historic / extirpated:
Only historic records for the species; likely extirpated
(Note that this category is not yet functional)

North American distribution maps for this species: FLNAUSDA PlantsBONAPBISON

Collection & Observation Phenology [?]

J
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F
0
M
0
A
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M
0
J
0
J
0
A
0
S
0
O
0
N
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D
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Collection & Observation Timeline [?]

Species Status

Status/Listing: No Information

Notes:

Origin: Native

Species Description

General: Dicot-herb, perennial, annual

Roots:

Shoots: simple leaf type; entire leaf margin; Pinnate leaf venation; oblong leaf shape

Inflorescence: raceme

Flowers: perfect; incomplete, regular; green; hypogynous ovary position

Fruit: achene

Physiology: autotrophic

Ecology & Natural History

Habitat: Found in marshy soil or shallow water; fresh or mildly alkaline water, 6-18 inches deep with mud, clay, or sandy bottom swamps; sloughs, and shaded flood plains.

ILPIN Notes: Possible cause of hayfever and dermatitis. Possible use of leaves as peppery seasoning, starchy fruits. Stephens, H.A. 1980. Poisonous Plants of Central United States. 1, 11. Form-roots. The seeds of this species are used as a food for marshbirds and shorebirds. Plant in spring or fall; 1000 roots at one and one-half inch intervals.

Functional Relationships:

Human Relationships:

  • Edibility [?] : yes-qualified
  • Showy Flowers:

Wildlife and Livestock Information:

  • Food Value: upland game birds: yes; waterfowl: yes; small non-game bird: yes; small mammals: yes; aquatic species: yes
  • Cover Value:

Coefficient of Conservatism (C-value) [?] :

  • Entire State: 3
  • Chicago Area: 6

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