Polygonaceae
From Freepedia
| Smartweeds | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Image:Illustration Fallopia dumetorum0.jpg Fallopia dumetorum - from Thomé Flora von Deutschland, Österreich und der Schweiz 1885 | ||||||||||
| Scientific classification | ||||||||||
| ||||||||||
| Genera | ||||||||||
|
See text |
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.
Genera
- 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 in L. Watson and M.J. Dallwitz (1992 onwards). The families of flowering plants: descriptions, illustrations, identification, information retrieval. http://delta-intkey.com
