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Oxytenanthera

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Oxytenanthera
Oxytenanthera abyssinica[1]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Poaceae
Subfamily: Bambusoideae
Tribe: Bambuseae
Subtribe: Bambusinae
Genus: Oxytenanthera
Munro
Species:
O. abyssinica
Binomial name
Oxytenanthera abyssinica
Synonyms[2]
  • Houzeaubambus Mattei
  • Bambusa abyssinica A.Rich.
  • Bambusa schimperiana Steud.
  • Oxytenanthera macrothyrsus K.Schum.
  • Oxytenanthera braunii Pilg.
  • Oxytenanthera borzii Mattei
  • Houzeaubambus borzii (Mattei) Mattei

Oxytenanthera is a genus of African bamboo. Bamboos are members of the grass family[3][4][5] Poaceae.

The only recognised species in this genus is Oxytenanthera abyssinica.[6] This species is found widespread across much of sub-Saharan Africa. In tropical Africa it is found outside of the humid forest zone from Senegal to Ethiopia. In Eastern Africa it is found to occur from Ethiopia all the way down to northern South Africa.

Oxytenanthera is the most common lowland bamboo in eastern and central Africa, resulting in its common name of African lowland bamboo. It is also referred to as savannah bamboo[7] or Bindura bamboo.

Distribution

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Oxytenanthera is widespread in the tropical parts of Africa. It occurs from The Gambia to Ethiopia, from Gabon to Kenya, and from Angola to Mozambique, and in the Limpopo Province in the northern parts of South Africa.[8]

Habitat

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Oxytenanthera prefers Miombo woodland habitat.[8]

Taxonomy

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The genus formerly contained several Asiatic species, but these are now generally considered to be better suited to other genera (primarily Dendrocalamus or Gigantochloa but see also Bambusa Cephalostachyum Pseudoxytenanthera Schizostachyum Yushania);[9] However, molecular studies show species of Oxytenanthera quite distinct from Dendrocalamus spp.

Ecology

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Oxytenanthera abyssinica is a drought-resistant species of bamboo that grows in savanna woodland, semi-arid wooded grassland and thicket. It mass-flowers (gregarious flowering) after long periods of vegetative growth of more than 70 years before occasionally sets seed. The seed of Oxytenanthera abyssinica is considered rare. After setting seed the parent plant dies back, sometimes synchronously across large areas. The last known seeding period occurred in 2006 in West Africa[4] and 2010 in Ethiopia.

Uses

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Traditional uses of Oxytenanthera abyssinica include weaving for basketry, as a building material for local construction, houses and furniture, and in the Southern Highlands of Tanzania in Iringa, Mbeya and Ruvuma Regions [10] it is tapped for its juice, and fermented for the production of a local alcoholic beverage.

However more recently the species has come under commercial production by EcoPlanet Bamboo.[11] Using seed from the most recent flowering event this entity has used Oxytenanthera abyssinica for the regeneration of degraded agricultural lands in South Africa's Eastern Cape.

Through EcoPlanet Bamboo's extensive R&D around this species and trials carried out to showcase its ability to restore degraded landscapes Oxytenanthera abyssinica has recently been touted by international institutions including the World Resources Institute as having a high potential for industrial production.[12]

Kenyan entity Kitil Farm [13] has developed a resource base of Oxytenanthera abyssinica seedlings in Isinya.

Conservation status

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In South Africa, it is classified as Data Deficient: taxonomically problematic, which means it is likely to be threatened since its native habitat and range is under threat but it's not well-defined.[8]

References

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  1. ^ 1913 illustration from English: Edmond Gustave Camus, Les bambusees, Atlas, vol. 2: plate 90 Source http://plantgenera.org/illustration.php?id_illustration=151808
  2. ^ Kew World Checklist of Selected Plant Families
  3. ^ "Search results — The Plant List". www.theplantlist.org. Retrieved 2017-08-01.
  4. ^ a b Ohrnberger, D. (1999). The Bamboos of the World. Elsevier Science. p. 596. ISBN 978-0-444-50020-5.
  5. ^ Munro, William 1868. Transactions of the Linnean Society of London 26(1): 126-130 descriptions in Latin, commentary in English
  6. ^ NRCS. "Oxytenanthera abyssinica". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 26 July 2015.
  7. ^ Janzen, D.H. 1976. Why bamboos wait so long to flower. Annual Review of Ecology and Systematics 7:347–391.
  8. ^ a b c "Oxytenanthera abyssinica | PlantZAfrica". pza.sanbi.org. Retrieved 2024-05-30.
  9. ^ Das, M., Bhattacharya, S., Singh, P., Filgueiras, T.S. and Pal, A. 2008. Bamboo taxonomy and diversity in the era of molecular markers. Advances in Botanical Research 47:225–268.
  10. ^ Mhando Leonardo (n.d.)
  11. ^ " ". Archived from the original on 2016-08-13. Retrieved 2017-01-03.
  12. ^ http://www.worldbamboo.net/wbcx/Powerpoints/Ecology%20and%20Environment%20Concerns/ForestandLandscapeRestoration_KBuckingham_Keynote.pdf
  13. ^ http://www.kitilfarm.com/
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