Spermatophyta: Dicotyledonae: Archichlamydeae

Polygonaceae - Knotweed family

Graham, R.A. (1958) Polygonaceae FTEA

Nogueira, I., Ortiz, S. & Paiva, J.A.R. (2006) Polygonaceae FZ 9(3)

Description of the family

Herbs (mostly, in ours), shrubs, climbers or rarely trees. Stems usually with sheathing stipules (ochreae). Leaves simple, alternate (rarely subopposite). Flowers actinomorphic, bisexual or unisexual. Petals 0. Perianth segments 3-6, sepaloid or petaloid, free or connate, persistent. Ovary superior, 1-locular, with a solitary ovule. Fruit a nut, indehiscent, hard, 3-angled or biconvex, usually enveloped in the perianth. Seeds with abundant endosperm.

Worldwide: 46 genera and 1100 species, ± cosmopolitan, but especially northern temperate.

Zimbabwe: 6 genera and 30 taxa.

Persicaria capitata

More sample images from the Polygonaceae (Click on each image to see a larger version and details of the record)

Rumex acetosella subsp. angiocarpus

Rumex acetosella subsp. angiocarpus

Rumex rhodesius

Rumex rhodesius

Persicaria strigosa

Persicaria strigosa

Persicaria decipiens

Persicaria decipiens

Rumex palustris

Rumex palustris

Links to genera:     View: living plant images - herbarium specimen images - all images for this family

GenusContent
Emex Campd.
Fagopyrum Mill.Description
Oxygonum Burch.Description, Image
Persicaria (L.) Mill.Description, Image
Polygonum L.Description
Rumex L.Description, Image

Other sources of information about Polygonaceae:

Our websites:

Flora of Zimbabwe: cultivated Polygonaceae
Flora of Mozambique: Polygonaceae | cultivated Polygonaceae
Flora of Zambia: Polygonaceae

External websites:

GRIN (Germplasm Resources Information Network) taxonomy for plants report for Polygonaceae
Google: Web - Images - Scholar


Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-14

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2014). Flora of Zimbabwe: Family page: Polygonaceae.
http://www.zimbabweflora.co.zw/speciesdata/family.php?family_id=181, retrieved 23 October 2014

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