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.

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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 sagittatus

Rumex sagittatus

Persicaria madagascariensis

Persicaria madagascariensis

Oxygonum delagoense

Oxygonum delagoense

Oxygonum sinuatum

Oxygonum sinuatum

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

GenusContent
Antigonon Endl.Description
Emex Campd.
Fagopyrum Mill.Description
Fallopia Adans.
Oxygonum Burch.Description
Persicaria (L.) Mill.Description
Polygonum L.Description
Rumex L.Description

Other sources of information about Polygonaceae:

Flora of Mozambique: cultivated Polygonaceae page
Flora of Zimbabwe: Polygonaceae
GRIN (Germplasm Resources Information Network) taxonomy for plants report for Polygonaceae
Google: Web - Images - Scholar


Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Stefaan Dondeyne 2007-13

Hyde, M.A., Wursten, B.T., Ballings, P. & Dondeyne, S. (2013). Flora of Mozambique: Family page: Polygonaceae.
http://www.mozambiqueflora.com/speciesdata/family.php?family_id=181, retrieved 24 May 2013

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