2201.000 Polygonum L. - Knotgrasses

Ronse Decraene, L.-P. & Akeroyd, J.R. (1988) Generic limits in Polygonum and related genera (Polygonaceae) on the basis of floral characters Botanical Journal of the Linnean Society 98 321-371

Description of the genus

Annual or perennial herbs, usually (in ours) prostrate. Ochreae present. Leaves small compared to Persicaria. Inflorescences all axillary, each with 6 or fewer flowers; bracts similar to the leaves. Perianth segments 4, petaloid, not enlarging in fruit. Stamens 8. Styles 3, free; nut 3-angled.

Worldwide: 20 species in northern temperate zones

Zimbabwe: 3 taxa.

Insects associated with this genus:
Comostilopsis stillata (Pink-laced Emerald) Food plant
Eicochrysops hippocrates (White-tipped blue) Larval foodplant
Grammodes bifasciata Larval foodplant
Rhodometra sacraria (Vestal) Food plant
Polygonum plebeium

Links to taxa:     View: living plant images - herbarium specimen images - all images for this genus

SpeciesFZ divisionsContent
arenastrum BoreauE
aviculare L.W,C
plebeium R.Br.N,W,C,E,SDescription, Image

Other sources of information about Polygonum:

Our websites:

Flora of Botswana: Polygonum
Flora of Caprivi: Polygonum
Flora of Malawi: Polygonum
Flora of Mozambique: Polygonum
Flora of Zambia: Polygonum

External websites:

ePIC (electronic Plant Information Center): Polygonum
Flora Zambesiaca web site: Polygonum
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network) taxonomy for plants report for Polygonum
Wikipedia: Polygonum
IPNI (International Plant Names Index): Polygonum
Kew Herbarium catalogue: Polygonum

Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-23

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2023). Flora of Zimbabwe: Genus page: Polygonum.
https://www.zimbabweflora.co.zw/speciesdata/genus.php?genus_id=515, retrieved 31 March 2023

Site software last modified: 12 October 2020 10:31pm (GMT +2)
Terms of use