Polygonaceae
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| Polygonaceae | ||||||||||
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| Missing image Illustration_Fallopia_dumetorum0.jpg Fallopia dumetorum Fallopia dumetorum - from Thomé Flora von Deutschland, Österreich und der Schweiz 1885 | ||||||||||
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The Polygonaceae, or the Knotweed Family, are a group of dicots including buckwheat, sorrel (but not wood sorrel), rhubarb, and knotgrass. It is named for the shape of the seed; that of rhubarb, for example, has a triangular cross-section.
In the Cronquist system, the Polygonaceae were given their own order, but newer systems treat them as part of the Caryophyllales.
Many knotweeds have ocreas at their stems' nodes. Ocreas is a sheath developed from stipules at the attaching leaves' bases. Some ocreas have mildly hairy fringes.
Species
- Afrobrunnichia
- Antigonon
- Aristocapsa
- Atraphaxis
- Brunnichia
- Calligonum
- Centrostegia
- Chorizanthe
- Coccoloba
- Dedeckera
- Dodecahema
- Emex
- Eriogonum
- Fagopyrum
- Fallopia
- Gilmania
- Goodmania
- Gymnopodium
- Harfordia
- Hollisteria
- Knorringia
- Koenigia
- Lastarriaea
- Leptogonum
- Muconea
- Muehlenbeckia
- Nemacaulis
- Neomillspaughia
- Oxygonum
- Oxyria
- Oxytheca
- Parapteropyrum
- Persicaria
- Podopterus
- Polygonella
- Polygonum or Knotweed
- Pteropyrum
- Pterostegia
- Rheum
- Rumex
- Ruprechtia
- Stenogonum
- Symmeria
- Systenotheca
- Triplaris
External link
- Polygonaceae (http://delta-intkey.com/angio/www/polygona.htm) in: Watson, L., and M. J. Dallwitz (1992 onwards). The Families of Flowering Plants: (http://delta-intkey.com/angio) Descriptions, Illustrations, Identification, Information Retrieval. http://delta-intkey.comda:Pileurt-familien (Polygonaceae)
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