2204.000 Oxygonum Burch.

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, rarely shrubs. Ochreae present. Flowers polygamous and heterostylous, borne in axillary elongated racemes. Male flowers with a very short tube and 4-5 petaloid perianth segments. Bisexual flowers tubular; perianth segments persistent, the tube accrescent in fruit. Pedicels of bisexual flowers lengthening and thickening, those of the male flowers withering. Stamens 8, in 2 series, 5 outer and 3 inner. Styles 3. Fruiting perianth unarmed or with 3 prickles, sometimes winged.

Worldwide: 30 species in tropical and South Africa and Madagascar

Mozambique: 10 taxa.

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

SpeciesFZ divisionsContent
alatum Burch. var. longisquamatum Germish.GI
atriplicifolium (Meisn.) Martelli
buchananii (Dammer) J.B. GillettN
delagoense KuntzeN,GI,MDescription, Image
dregeanum Meisn.[Agg]MS,GIDescription, Image
dregeanum Meisn. subsp. canescens (Sond.) Germish. var. lobophyllum Germish.MS
dregeanum Meisn. subsp. streyi Germish.GI
dregeanum Meisn. subsp. strictum (C.H. Wright) Paiva & S. OrtizMS
robustum Germish.M
sinuatum (Hochst. & Steud. ex Meisn.) DammerN,T,GI,MDescription, Image

Other sources of information about Oxygonum:

Our websites:

Flora of Botswana: Oxygonum
Flora of Caprivi: Oxygonum
Flora of Malawi: Oxygonum
Flora of Zambia: Oxygonum
Flora of Zimbabwe: Oxygonum

External websites:

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

Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave 2007-20

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2020). Flora of Mozambique: Genus page: Oxygonum.
https://www.mozambiqueflora.com/speciesdata/genus.php?genus_id=518, retrieved 3 July 2020

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