2201.030 Persicaria (L.) Mill. - Knotweeds

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) erect. Ochreae present. Leaves large compared to Polygonum, usually more than 5 cm. Each inflorescence with usually more than 6 flowers, some or all inflorescences terminal, bracts similar to the leaves. Perianth segments mostly 5, petaloid, not enlarging in fruit. Stamens 8 (or 4-7 by reduction). Styles 2-3; nut biconvex or 3-angled.

Worldwide: c. 150 species, ± cosmopolitan

Mozambique: 8 taxa.

The larvae of the following species of insect eat species of this genus:
Comostilopsis stillata (Pink-laced Emerald)
Rhodometra sacraria (Vestal)
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Links to taxa:     View: living plant images - herbarium specimen images - all images for this genus

SpeciesFZ divisionsContent
decipiens (R. Br.) K.L. WilsonN,T,GI,MDescription, Image
glomerata (Dammer) S. Ortiz & PaivaN,Z,MS
lapathifolia (L.) GrayT,MS,GI,MDescription
limbata (Meisn.) H. HaraGIDescription, Image
madagascariensis (Meisn.) S. Ortiz & PaivaN,Z,T,GI,MDescription, Image
senegalensis (Meisn.) SojákN,Z,T,MS,GI,MDescription, Image
senegalensis f. albotomentosa (R.A. Graham) K.L. WilsonN,Z,T,MS,GI,MDescription, Image
setosula (A. Rich.) K.L. WilsonN,M

Other sources of information about Persicaria:

Our websites:

Flora of Botswana: Persicaria
Flora of Caprivi: Persicaria
Flora of Caprivi: cultivated Persicaria
Flora of Malawi: Persicaria
Flora of Zambia: Persicaria
Flora of Zimbabwe: Persicaria
Flora of Zimbabwe: cultivated Persicaria

External websites:

African Plants: A Photo Guide (Senckenberg): Persicaria
BHL (Biodiversity Heritage Library): Persicaria
EOL (Encyclopedia of Life): Persicaria
GBIF (Global Biodiversity Information Facility): Persicaria
Google: Web - Images - Scholar
iNaturalist: Persicaria
IPNI (International Plant Names Index): Persicaria
JSTOR Plant Science: Persicaria
Mansfeld World Database of Agricultural and Horticultural Crops: Persicaria
Plants of the World Online: Persicaria
Tropicos: Persicaria
Wikipedia: Persicaria

Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave 2007-24

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2024). Flora of Mozambique: Genus page: Persicaria.
https://www.mozambiqueflora.com/speciesdata/genus.php?genus_id=516, retrieved 3 March 2024

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