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Persicaria
Family: Polygonaceae
Persicaria image
Max Licher
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Harold R. Hinds+, Craig C. Freeman in Flora of North America (vol. 5)
Herbs, perennial or annual (sometimes suffrutescent in P. wallichii); taprooted or fibrous-rooted; sometimes rhizomatous or stoloniferous. Stems erect or, sometimes, prostrate or scandent, simple or branched, glabrous or pubescent, rarely with recurved prickles. Leaves deciduous, mostly cauline, alternate, petiolate or sessile; ocrea persistent or disintegrating with age and deciduous entirely or distally, usually tan, brown, or reddish, chartaceous or partially to entirely foliaceous, rarely coriaceous proximally and chartaceous distally, glabrous or scabrous to variously pubescent, never 2-lobed distally; blade lanceolate or ovate to hastate or sagittate, margins entire or, rarely, hastately lobed. Inflorescences terminal or terminal and axillary, spikelike, paniclelike, or capitate; peduncle present. Pedicels present or absent. Flowers bisexual (often functionally unisexual in P. amphibia and P. hydropiperoides), 1-14 per ocreate fascicle, base not stipelike; perianth white, greenish white, roseate, red, or purple, campanulate or urceolate, rarely rotate, rarely becoming fleshy in fruit, glabrous, sometimes glandular-punctate, accrescent or nonaccrescent; tepals 4-5, connate 1/ 2/ 3 their lengths (less than 5 their lengths in P. wallichii), petaloid, dimorphic, outer larger than inner; stamens 5-8, filaments distinct or connate basally, outer ones sometimes adnate to perianth tube, glabrous; anthers yellow, pink, or red, elliptic to ovate; styles 2-3, erect to spreading or reflexed, distinct or connate; stigmas capitate. Achenes included or exserted, brown or dark brown to black, not winged, discoid, biconvex, 2-3-gonous, or spheroidal, glabrous. Seeds: embryo curved. x = 10, 11, 12.
Species within checklist: Kansas
Persicaria amphibia
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Persicaria bicornis
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Persicaria coccinea
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Persicaria densiflora
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Persicaria glabra
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Persicaria hydropiper
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Persicaria hydropiperoides
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Persicaria incarnata
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Persicaria lapathifolia
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Persicaria longiseta
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Persicaria longistyla
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Persicaria maculata
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Persicaria maculosa
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Persicaria mesochora
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Persicaria mississippiensis
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Persicaria muehlenbergii
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Persicaria nebraskensis
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Persicaria opelousana
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Persicaria orientalis
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Persicaria paludicola
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Persicaria pensylvanica
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Persicaria persicaria
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Persicaria persicarioides
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Persicaria portoricensis
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Persicaria punctata
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Persicaria ruderalis
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Persicaria sagittata
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Persicaria setacea
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Persicaria tomentosa
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Persicaria virginiana
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Persicaria vulgaris
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