Overview

Distribution

National Distribution

Canada

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Global Range: Occurs from New Brunswick to Ontario south to Minnesota, Illinois, Kentucky, Pennsylvania, and Maryland (Kartesz 1999). Although it is not native to Florida, a specimen was collected historically (Wunderlin 1988, Kartesz 1999).

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N.B., Ont., Que.; Conn., Del., Fla., Ill., Ind., Ky., Maine, Md., Mass., Mich., Minn., N.H., N.J., N.Y., Ohio, Pa., R.I., Vt., Va., Wis.
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Physical Description

Morphology

Description

Plants annual, 3-15(-20) dm; roots also rarely arising from proximal nodes; rhizomes and stolons absent. Stems erect, branched distally, ribbed distally, hirsute proximally, stipitate-glandular distally, usually smooth proximally. Leaves: ocrea brownish to reddish brown, cylindric, 8-20 mm, chartaceous, base inflated or not, margins truncate, ciliate with bristles 2-7 mm, surface strigose to hirsute, not glandular-punctate, rarely stipitate-glandular; petiole (0.1-)0.5-1.5 cm, hirsute, leaves sometimes sessile; blade without dark triangular or lunate blotch adaxially, narrowly lanceolate, 6-18 × 1-3.5 cm, base tapering, margins antrorsely strigose, apex acuminate to attenuate, faces sparingly hirsute abaxially and adaxially, veins often hirsute, sometimes stipitate-glandular. Inflorescences terminal and axillary, nodding or drooping, usually interrupted, 10-100 × 5-10 mm; peduncle 20-50 mm, stipitate-glandular; ocreolae overlapping or not overlapping proximally, margins eciliate or ciliate with bristles to 1.3 mm. Pedicels ascending to spreading, 1-4 mm. Flowers (1-)2-8 per ocreate fascicle, homostylous; perianth roseate or purple, glabrous, not glandular-punctate, scarcely accrescent; tepals 5, connate in proximal 1/3, obovate, 2.4-3.2 mm, veins prominent or not, not anchor-shaped, margins entire, apex obtuse to rounded; stamens 5 (or 8), included; anthers pink, elliptic; styles 2, connate to middle. Achenes included, dark brown to black, biconvex, 1.8-2.5 × 1.5-2 mm, shiny, smooth.
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Diagnostic Description

Synonym

Polygonum careyi Olney, Proc. Providence Franklin Soc. 1: 29. 1847
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Ecology

Habitat

Low thickets, swamps, bogs, moist shorelines, clearings, recent burns, cultivated ground; 0-300m.
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Life History and Behavior

Cyclicity

Flowering/Fruiting

Flowering Jul-Oct.
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Conservation

Conservation Status

National NatureServe Conservation Status

Canada

Rounded National Status Rank: NNR - Unranked

United States

Rounded National Status Rank: NNR - Unranked

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NatureServe Conservation Status

Rounded Global Status Rank: G4 - Apparently Secure

Reasons: Fairly widespread in northeastern North America but with an apparent gap in its range in western New York and Pennsylvania (Mitchell and Dean 1984, Coffin and Pfannmuller 1988). P. careyi is an annual that is found in moist to wet sandy shores, fields, open woodlands and disturbed habitats (Rhoads and Block 2000). It is uncommon to rare across its range and historical in Vermont, Delaware, and Ohio (Coffin and Pfannmuller 1998, Haines and Vining 1988).

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Notes

Comments

An infusion made from entire plants of Persicaria careyi was used by the Potawatomi as a cold remedy and febrifuge (D. E. Moerman 1998).
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