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

Zimbabwe: 8 taxa.

Oxygonum dregeanum

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

SpeciesFZ divisionsContent
alatum Burch. var. longisquamatum Germish.N,W,E,S
delagoense KuntzeW,C,SDescription, Image
dregeanum Meisn.[Agg]N,W,C,E,SDescription, Image
dregeanum Meisn. subsp. canescens (Sond.) Germish. var. lobophyllum Germish.E
dregeanum Meisn. subsp. canescens (Sond.) Germish. var. canescens W,C,E,S
dregeanum Meisn. subsp. canescens (Sond.) Germish. var. dissectum Germish.C
dregeanum Meisn. subsp. strictum (C.H. Wright) Paiva & S. OrtizN,W,C,E,S
sinuatum (Hochst. & Steud. ex Meisn.) DammerN,W,C,E,SDescription, Image

Other sources of information about Oxygonum:

Our websites:

Flora of Botswana: Oxygonum
Flora of Caprivi: Oxygonum
Flora of Malawi: Oxygonum
Flora of Mozambique: Oxygonum
Flora of Zambia: 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, 2002-16

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2016). Flora of Zimbabwe: Genus page: Oxygonum.
http://www.zimbabweflora.co.zw/speciesdata/genus.php?genus_id=518, retrieved 30 June 2016

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