Oxygonum pachybasis
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Habit
Brachystegia woodland
Kaputa GMA, Nsama District
Apr 2024
Photo: Nick Wightman
Stem & leaves
Brachystegia woodland
Kaputa GMA, Nsama District
Apr 2024
Photo: Nick Wightman
Flower
Brachystegia woodland
Kaputa GMA, Nsama District
Apr 2024
Photo: Nick Wightman
Flower
Brachystegia woodland
Kaputa GMA, Nsama District
Apr 2024
Photo: Nick Wightman
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Species details: Click on each item to see an explanation of that item (Note: opens a new window)
| Synonyms: |
Oxygonum vanderystii Robyns |
| Common names: | |
| Frequency: | Local |
| Status: | Native |
| Description: |
An erect or ± decumbent perennial herb with many stems from a thick woody rootstock. Stems annual, reddish-brown, 8–35 cm long, longitudinally striate, leafless at the base, ± pubescent. Leaves 3.5–6 × 0.9–1.3 cm, elliptic-lanceolate to lanceolate, acute apiculate at the apex, attenuate at the base, entire on the margins, pubescent to glabrescent, midrib prominent beneath. Ocrea reddish-brown, 0.8–1.3 cm long, truncate with a fringe of brownish setae 3–7 mm long at the apex, ± pubescent. Flowers pedicellate, 2–6 in the axils of bracts, arranged in terminal and lateral spiciform racemes up to 17 cm long, pedicels 5–8 mm long, accrescent up to 12 mm and reflexed in fruit; bracts chartaceous, obliquely truncate and produced dorsally into an acute subulate seta, sometimes with a fringe of short setae Hermaphrodite flowers heterostylous; perianth white with lobes tinged pink outside; tube 1.5–2 mm long, puberulous outside; lobes 4–7 × 3 mm long, ovate-elliptic to oblong-elliptic. Male flowers not seen. Ovary 0.5–1 mm long; style connate in the lower c. 2 mm, 3-branched; style of long-styled flowers 4–6.5 mm long; style of short-styled flowers (1)1.5–2.5(3) mm. Nut reddish-brown when mature, 7–9 × 4–5 mm, ovoid-trigonous, longitudinally striate, unwrinkled or very irregularly wrinkled, puberulous. |
| Type location: |
Zambia |
| Notes: | |
| Derivation of specific name: | pachybasis: with a thickened base, referring to the thick woody rootstock. |
| Habitat: | Miombo and Cryptosepalum woodland, roadsides, recently burnt ground |
| Altitude range: (metres) | 1350 - 1600 m |
| Flowering time: | Feb - May, Sept - Dec |
| Worldwide distribution: | Angola, DRC, Zambia and Tanzania |
| FZ divisions: | N,W |
| Zambian distribution (Provinces): | Nw,N |
| Growth form(s): | Perennial. |
| Endemic status: | |
| Red data list status: | |
| Insects associated with this species: | |
| Spot characters: | Display spot characters for this species |
| Images last updated: | Tuesday 23 July 2024 |
| Literature: |
Nogueira, I., Ortiz, S. & Paiva, J.A.R. (2006). Polygonaceae Flora Zambesiaca 9(3) Pages 34 - 35. |
Other sources of information about Oxygonum pachybasis:
External websites:
African Plants: A Photo Guide (Senckenberg): Oxygonum pachybasisAfrican Plant Database: Oxygonum pachybasis
BHL (Biodiversity Heritage Library): Oxygonum pachybasis
EOL (Encyclopedia of Life): Oxygonum pachybasis
GBIF (Global Biodiversity Information Facility): Oxygonum pachybasis
Google: Web - Images - Scholar
iNaturalist: Oxygonum pachybasis
IPNI (International Plant Names Index): Oxygonum pachybasis
JSTOR Plant Science: Oxygonum pachybasis
Mansfeld World Database of Agricultural and Horticultural Crops: Oxygonum pachybasis
Plants of the World Online: Oxygonum pachybasis
Tropicos: Oxygonum pachybasis
Wikipedia: Oxygonum pachybasis