Illinois Natural History Survey - University of Illinois

Persicaria sagittatum
Arrowleaf tearthumb
Taxonomy

Synonyms: Tracaulon sagittatum, Polygonum sagittatum

Subspecific taxa:

Classification:

Other taxonomic & nomenclature sources: USDA PlantsITISThe Plant ListIPNI

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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 [?]

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F
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M
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A
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M
0
J
0
J
0
A
0
S
0
O
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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, annual

Roots:

Shoots: alternate leaf arrangment; simple leaf type; entire leaf margin; Pinnate leaf venation; linear, oblique leaf shape

Inflorescence: raceme

Flowers: perfect; 3 merous; incomplete, not petals, regular; green, white, others; hypogynous ovary position

Fruit: achene

Physiology: autotrophic

Ecology & Natural History

Habitat: Species is distributed in swampy places about springs, spring branches, sloughs; is frequent in marshy ground; abundant in burned bogs, sometimes dominating local vegetation; scratchy, tangled mass in zone about peat marshes where there has been a severe fire.

ILPIN Notes: Stephens, H.A. 1980. Poisonous Plants of the Central United States. Regent Press of Kansas. Lawrence, KA. 165 pp. Species is possible cause of hayfever and dermatitis (Stephens); possible use of peppery leaves and starchy fruits. Regarding flower merous, it may be 3 or 5.

Functional Relationships:

Human Relationships:

  • Edibility [?] :
  • Showy Flowers:

Wildlife and Livestock Information:

  • Food Value:
  • Cover Value:

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

  • Entire State: 5
  • Chicago Area: 8

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