Common Name: Kousso. Hagenia abyssinica. Drawing of the leaves, flowers, fruits and seed. Photograph by: Franz Eugen Köhler, Köhler’s Medizinal-Pflanzen. This study provides insight into the medicinal importance of Hagenia abyssinica as well as the degree of threat on its population. Throughout history, Hagenia abyssinica has been used as an anthelmintic in Ethiopia and other parts of Africa. Almost every Ethiopian used to.

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Hagenia abyssinica

Flora Zambesiaca Flora Zambesiaca http: In the Kilimanjaro area, the bark is used for dyeing textiles yellowish red. Flora of Tropical East Africaed. Strong doses of kosso can cause fainting, visual disorders or even death. The active principles in Hagenia abyssinica flowers are phloroglucinol derivatives, called kosins: Banksia abyssinica Bruce Brayera anthelmintica Kunth ex A.

Commercial kosin extraction from flowers depends on quality, demand and price.

Use of Kosso was borrowed from Ethiopia, where as Richard Pankhurst quotes Merab as saying that “to mention it was to cover a quarter of that country’s pharmacopeia. The wood is usually straight-grained with occasionally some silver grain when cut radially. Kosso wood is not durable, and is subject to attack by borers and termites. Some believe that side-effects are more severe when male flowers are used, and that male flowers have greater emetic activity.


African Redwood

It has been suggested that hagenia needs fires to regenerate, and it is true that it often occurs in even-aged stands. Retrieved from ” https: Pre-boring before screwing is essential. It occurs in montane forests, especially in the upper forest region, at 2, m. There have been previous efforts to bring this species into conservation and propagation programmes, however, due to its increasing rarity and limited cultivation, there is a great need to increase conservation work of this highly utilised species which is a key part of the Afromontane forests.

Highly valued by locals for its uses, Hagenia abyssinica is often left standing when forest is cleared. Hagenia abyssinica is endemic to the Afromontane regions of central and eastern Africa. Fish New Zealand Freshwater.

In Tanzania, Hagenia abyssinica is grown in agroforestry systems; the wood is used as fuel, the leaves as fodder and green manure, and the seeds as a condiment or spice. Young trees have poor competitive ability. By using our services, you agree to our use of cookies.

Hagenia abyssinica – Useful Tropical Plants

Phytochemical studies on male and female flowers of Hagenia abyssinica by column chromatography, thin-layer chromatography and high-performance liquid chromatography. Eggeling, Indigenous Trees of the Uganda Protectorate, ed. Closeup showing the hairy underside of the leaf. The flowers do not have petals, and the colour is mostly due to the bracts modified leaves.


Kew Backbone Distributions Hedberg, I. Unsourced or poorly sourced material may be challenged and removed. First published in Syst. The heartwood is very resistant to impregnation. Hagenia abyssinica has been used in Ethiopia for centuries. Animals New Zealand’s Marine mammals.

They can be as effective as the chemical anthelmintics dichlorophen, niclosamide and praziquantel. Planing abyssjnica be difficult due to interlocked grain, but the moulding, boring and turning are satisfactory. Musee Royal de l’Afrique Centrale. However, in locations with high population and cattle pressure the species is now rare or has disappeared often cut for firewood purposes.

Birds Shore and Seabirds Listed by binomial names and photos.

Research, Analysis and Information Network. Specimens of Hagenia abyssinica flowers, stem, bark and wood are held in Kew’s Economic Botany Collection in the Sir Joseph Banks Building, where they are available to researchers by abyssinlca. N – Taranaki Educational Resource: Kosso is an anthelmintic and also acts as a muscle poison in some small animals.