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

Zambia: 14 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 divisionsProvincesContent
decipiens (R. Br.) K.L. WilsonB,N,W,C,E,SNw,N,E,Lk,S,WDescription, Image
glandulo-pilosa (De Wild.) SojákWNw
glomerata (Dammer) S. Ortiz & PaivaN,WNw,Lp
hystricula (J. Schust.) SojákNN
lapathifolia (L.) GrayC,E,SE,Lk,SDescription
limbata (Meisn.) HaraB,N,W,C,E,SCb,N,E,Lk,S,WDescription, Image
madagascariensis (Meisn.) S. Ortiz & PaivaB,N,W,C,E,SNw,Lp,E,C,Lk,S,WDescription, Image
meisneriana var. beyrichiana (Cham. & Schltdl.) C.C. FreemanB,N,CLp,N,Mc,C,Lk,WImage
nepalensis (Meisn.) H. GrossNN
nogueirae S. Ortiz & PaivaWNw
senegalensis (Meisn.) SojákB,N,W,C,SNw,Lp,N,C,Lk,S,WDescription, Image
senegalensis f. albotomentosa (R.A. Graham) K.L. WilsonB,N,W,C,SDescription, Image
setosula (A. Rich.) K.L. WilsonN,W,SCb,N
strigosa (R. Br.) H. GrossB,N,W,C,SN,WDescription, Image

Other sources of information about Persicaria:

Our websites:

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

External websites:

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

Copyright: Mike Bingham, Annette Willemen, Bart Wursten, Petra Ballings and Mark Hyde, 2011-17

Bingham, M.G., Willemen, A., Wursten, B.T., Ballings, P. and Hyde, M.A. (2017). Flora of Zambia: Genus page: Persicaria.
http://www.zambiaflora.com/speciesdata/genus.php?genus_id=516, retrieved 24 September 2017

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