| Home | > | List of families | > | Acanthaceae | > | Duosperma | > | quadrangulare |
Duosperma quadrangulare
Selected images: Click on each image to see a larger version and details of the record View all images (42)
Picture: Helen Pickering
Livingstone: on the western edge of the sewerage ponds
Picture: Helen Pickering
Livingstone: on the western edge of the sewerage ponds
Specimen citations: Display citations Detailed records: Display species records QDS maps by: Google Maps Point records by Google Maps
Species details: Click on each item to see an explanation of that item (Note: opens a new window)
| Synonyms: |
Disperma affine (Lindau) S. Moore Disperma angolense C.B. Clarke Disperma dentatum C.B.Clarke Disperma quadrangulare (Klotzsch) C.B. Clarke Disperma viscidissimum S. Moore Duosperma angolense (C.B. Clarke) Brummitt Duosperma dentatum C.B. Clarke, invalid name Hygrophila affinis Lindau Hygrophila quadrangularis (Klotzsch) Lindau Hygrophila sessilifolia sensu Lindau in Fries (1914), non Lindau Nomaphila quadrangularis Klotzsch |
| Common names: | |
| Frequency: | |
| Status: | Native |
| Description: |
Erect or rarely decumbent, shrubby perennial herb, up to c. 1.2m tall. Stem 4-angled, aromatic when crushed, more or less densely covered with sticky glands and non-glandular hairs. Leaves opposite, elliptic to somewhat obovate, 3 - 20 cm long, hairless or with scattered glossy hairs on the veins; base decurrent; margin almost entire to toothed. Leaves often immature when flowering. Flowers in 1-3-flowered clusters in the upper axils, together often forming racemes or panicles with leaf-like bracts near the base of the inflorescence. Calyx with glandular and non-glandular hairs. Corolla white to mauve-purple with darker markings on the lower lip and a yellow to orange palate with stiff hairs on it. Fruit an obovoid capsule, 7-11 mm long, hairless or with scattered glands near the apex. |
| Type location: |
Mozambique |
| Notes: | |
| Derivation of specific name: | quadrangulare: 4-angled, referring to the stems. |
| Habitat: | In mixed deciduous woodland, alluvial grassland, on river banks, near pans or marshes, on termite mounds and in areas of old cultivation. |
| Altitude range: | Up to 1000 m |
| Flowering time: | Almost throughout the year |
| Worldwide distribution: | Angola, Botswana, DRC, Namibia, Tanzania, Malawi, Mozambique, Zambia, Zimbabwe |
| Zambian distribution (Flora Zambesiaca): | N,C,E,S |
| Zambian distribution (Provinces): | N,Mc,E,C,Lk,S |
| Growth form(s): | |
| Endemic status: | |
| Red data list status: | |
| Insects associated with this species: | |
| Spot characters: | Display spot characters for this species |
| Literature: |
Da Silva, M.C., Izidine, S. & Amude, A.B. (2004). A preliminary checklist of the vascular plants of Mozambique. Southern African Botanical Diversity Network Report No. 30 Sabonet, Pretoria Page 18. As Duosperma dentatum Mapaura, A. & Timberlake, J. (eds) (2004). A checklist of Zimbabwean vascular plants Southern African Botanical Diversity Network Report No. 33 Sabonet, Pretoria and Harare Page 13. Phiri, P.S.M. (2005). A Checklist of Zambian Vascular Plants Southern African Botanical Diversity Network Report No. 32 Page 18. Setshogo, M.P. (2005). Preliminary checklist of the plants of Botswana. Sabonet Report no. 37. Sabonet, Pretoria and Gaborone Page 18. Vollesen, K. (2013). Acanthaceae (Part 1) Flora Zambesiaca 8(5) Pages 160 - 161. |
Other sources of information about Duosperma quadrangulare:
Our websites:
Flora of Botswana: Duosperma quadrangulareFlora of Caprivi: Duosperma quadrangulare
Flora of Malawi: Duosperma quadrangulare
Flora of Mozambique: Duosperma quadrangulare
Flora of Zimbabwe: Duosperma quadrangulare
External websites:
African Plants: A Photo Guide (Senckenberg): Duosperma quadrangulareAfrican Plant Database: Duosperma quadrangulare
BHL (Biodiversity Heritage Library): Duosperma quadrangulare
EOL (Encyclopedia of Life): Duosperma quadrangulare
GBIF (Global Biodiversity Information Facility): Duosperma quadrangulare
Google: Web - Images - Scholar
iNaturalist: Duosperma quadrangulare
IPNI (International Plant Names Index): Duosperma quadrangulare
JSTOR Plant Science: Duosperma quadrangulare
Mansfeld World Database of Agricultural and Horticultural Crops: Duosperma quadrangulare
Plants of the World Online: Duosperma quadrangulare
Tropicos: Duosperma quadrangulare
Wikipedia: Duosperma quadrangulare
| Home | > | List of families | > | Acanthaceae | > | Duosperma | > | quadrangulare |