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Polygonum

Polygonum
Family: Polygonaceae
Polygonum image
Joseph M. DiTomaso,
  • FNA
  • Gleason & Cronquist
  • Resources
Mihai Costea, François J. Tardif, Harold R. Hinds+ in Flora of North America (vol. 5)
Herbs, shrubs, or subshrubs, annual (perennial in P. striatulum), homophyllous or heterophyllous, sometimes heterocarpic; roots fibrous or woody. Stems prostrate to erect, glabrous, smooth or sometimes papillous-scabridulous. Leaves cauline, alternate (opposite in P. humifusum), petiolate or sessile; ocrea with distal part persistent, often hyaline, white or silvery, 2-lobed, chartaceous, glabrous, disintegrating into fibers, or disintegrating completely; petiole base articulated with ocrea or not; blade linear, lanceolate, elliptic, ovate, or subround, margins entire. Inflorescences axillary or axillary and terminal, spikelike, or flowers solitary; peduncle absent. Pedicels present or absent. Flowers bisexual, 1-7(-10) per ocreate fascicle, base not stipelike; perianth nonaccrescent, white or greenish white to pink, campanulate to urceolate, glabrous; tepals 5, connate 3-70% of their length, petaloid or sepaloid, monomorphic or, rarely, dimorphic, the inner usually flat, the outer flat or sometimes keeled and cucullate distally, sometimes of different length than the inner; stamens 3-8 (some may be reduced to staminodes); filaments distinct, free or adnate to perianth tube, glabrous; anthers whitish yellow, pink to purple or orange-pink, elliptic to oblong; styles (2-)3, mostly spreading, distinct or connate proximally; stigmas 2-3, capitate. Achenes included or exserted, yellow-green, brown, or black, unwinged, (2-)3-gonous, glabrous. Seeds: embryo curved. x = 10.
Vascular plants of NE US and adjacent Canada
Fls perfect or unisexual; pedicels jointed at or near the summit; tep (4)5(6), connate below; stamens 3-8; ovary flattened or trigonous, with 2-3 minute, usually capitate stigmas, the styles usually short or obsolete, separate or united; fr a lenticular or trigonous achene, wholly or in large part enclosed by the persistent perianth; embryo at one angle of the achene; annual or perennial herbs (seldom shrubs), commonly with well developed ocreae; fls borne in axillary clusters or terminal (often also axillary) spike-like racemes, or in terminal heads or panicles. Most of the several sections have been taken by some authors as distinct genera. Our spp. mostly flower from early or midsummer into fall. 200, widespread, mainly temp.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.
Species within checklist: Maine Eudicots
Polygonum achoreum
Media resource of Polygonum achoreum
Map not
Available
Polygonum acre
Media resource of Polygonum acre
Map not
Available
Polygonum amphibium
Media resource of Polygonum amphibium
Map not
Available
Polygonum arenastrum
Media resource of Polygonum arenastrum
Map not
Available
Polygonum arifolium
Media resource of Polygonum arifolium
Map not
Available
Polygonum articulatum
Media resource of Polygonum articulatum
Map not
Available
Polygonum aviculare
Media resource of Polygonum aviculare
Map not
Available
Polygonum bellardii
Media resource of Polygonum bellardii
Map not
Available
Polygonum bistorta
Media resource of Polygonum bistorta
Map not
Available
Polygonum buxifolium
Media resource of Polygonum buxifolium
Map not
Available
Polygonum buxiforme
Media resource of Polygonum buxiforme
Map not
Available
Polygonum caespitosum
Media resource of Polygonum caespitosum
Map not
Available
Polygonum careyi
Media resource of Polygonum careyi
Map not
Available
Polygonum cespitosum
Media resource of Polygonum cespitosum
Map not
Available
Polygonum cilinode
Media resource of Polygonum cilinode
Map not
Available
Polygonum convolvulus
Media resource of Polygonum convolvulus
Map not
Available
Polygonum cuspidatum
Media resource of Polygonum cuspidatum
Map not
Available
Polygonum douglasii
Media resource of Polygonum douglasii
Map not
Available
Polygonum erectum
Media resource of Polygonum erectum
Map not
Available
Polygonum fowleri
Media resource of Polygonum fowleri
Map not
Available
Polygonum glaucum
Media resource of Polygonum glaucum
Map not
Available
Polygonum hydropiper
Media resource of Polygonum hydropiper
Map not
Available
Polygonum hydropiperoides
Media resource of Polygonum hydropiperoides
Map not
Available
Polygonum lapathifolium
Media resource of Polygonum lapathifolium
Map not
Available
Polygonum longisetum
Media resource of Polygonum longisetum
Map not
Available
Polygonum orientale
Media resource of Polygonum orientale
Map not
Available
Polygonum pensylvanicum
Media resource of Polygonum pensylvanicum
Map not
Available
Polygonum persicaria
Media resource of Polygonum persicaria
Map not
Available
Polygonum punctatum
Media resource of Polygonum punctatum
Map not
Available
Polygonum raii
Media resource of Polygonum raii
Map not
Available
Polygonum ramosissimum
Media resource of Polygonum ramosissimum
Map not
Available
Polygonum sachalinense
Media resource of Polygonum sachalinense
Map not
Available
Polygonum sagittatum
Media resource of Polygonum sagittatum
Map not
Available
Polygonum scandens
Media resource of Polygonum scandens
Map not
Available
Polygonum spaethii
Media
not available
Map not
Available
Polygonum tataricum
Media
not available
Map not
Available
Polygonum tenue
Media resource of Polygonum tenue
Map not
Available
Polygonum viviparum
Media resource of Polygonum viviparum
Map not
Available
Polygonum zuccarinii
Media resource of Polygonum zuccarinii
Map not
Available
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