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Useful Tropical Plants

Hagenia abyssinica

(Bruce) J.F.Gmel.

Rosaceae

+ Synonyms

Banksia abyssinica Bruce

Brayera anthelmintica Kunth

Hagenia anthelmintica (Kunth) Eggleling

Common Name: Kousso

Hagenia abyssinica
Drawing of the leaves, flowers, fruits and seed
Photograph by: Franz Eugen Köhler, Köhler's Medizinal-Pflanzen
Public domain
Hagenia abyssinica Hagenia abyssinica Hagenia abyssinica Hagenia abyssinica Hagenia abyssinica Hagenia abyssinica Hagenia abyssinica

General Information

Kousso is a rather slender open-crowned dioecious tree growing from 5 - 25 metres tall[
328
Title
African Flowering Plants Database
Publication
 
Author
 
Website
http://www.ville-ge.ch/musinfo/bd/cjb/africa/recherche.php
Publisher
Conservatoire et Jardin Botaniques.
Year
0
ISBN
 
Description
Contains information on over 150,000 plant names (including synonyms) giving a description and habitat, plus a distribution map.
]. The unbuttressed bole is usually short and crooked with the bark peeling in strips and sometimes very thick on old stems[
328
Title
African Flowering Plants Database
Publication
 
Author
 
Website
http://www.ville-ge.ch/musinfo/bd/cjb/africa/recherche.php
Publisher
Conservatoire et Jardin Botaniques.
Year
0
ISBN
 
Description
Contains information on over 150,000 plant names (including synonyms) giving a description and habitat, plus a distribution map.
,
418
Title
Ecocrop
Publication
 
Author
 
Website
http://ecocrop.fao.org/ecocrop/srv/en/home
Publisher
 
Year
0
ISBN
 
Description
Basic information on a wide range of useful plants, plus details of environmental needs where available.
].
The tree is a highly valued medicinal plant, being commonly harvested from the wild for local use. It used to be traded internationally as an anthelmintic, but with the advent of chemical alternatives its use has greatly reduced. It is still sold in local markets in Ethiopia[
299
Title
Protabase - Plant Resources of Tropical Africa.
Publication
 
Author
 
Website
http://www.prota.org
Publisher
 
Year
0
ISBN
 
Description
An excellent on-line database with detailed information on over 3,200 species of useful plants of Africa.
]. The plant is sometimes deliberately left in farmland or derived grassland and may be occasionally planted where it occurs naturally because of its medicinal properties[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
]. The tree also provides a timber that makes a good fuel and charcoal, and is used in soil stabilization projects. An attractive tree with its strands of red flowers, it is suitable for planting in amenity areas[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].

Known Hazards

None known

Botanical References


Range

Eastern Africa - Central African Republic to Ethiopia, south to Tanzania and Zambia.

Habitat

Often dominant in the woodland zone just above the mountain bamboo at elevations of 2,000 - 3,000 metres[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
]. It occurs in undifferentiated afro-montane forest and dry single dominant afro-montane forest; at lower altitudes often at forest margins[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].

Properties

Edibility Rating *  *
Medicinal Rating *  *
Other Uses Rating *  *
HabitTree
Height15.00 m
PollinatorsBees
Self-fertileNo
Cultivation StatusCultivated, Ornamental, Semi-cultivated, Wild

Cultivation Details

A plant of the dry to moist tropics, where it is found at elevations from 1,800 - 4,300 metres. It grows best in areas where annual daytime temperatures are within the range 25 - 32°c, but can tolerate 5 - 36°c[
418
Title
Ecocrop
Publication
 
Author
 
Website
http://ecocrop.fao.org/ecocrop/srv/en/home
Publisher
 
Year
0
ISBN
 
Description
Basic information on a wide range of useful plants, plus details of environmental needs where available.
]. It prefers a mean annual rainfall in the range 1,000 - 1,600mm, but tolerates 400 - 1,800mm[
418
Title
Ecocrop
Publication
 
Author
 
Website
http://ecocrop.fao.org/ecocrop/srv/en/home
Publisher
 
Year
0
ISBN
 
Description
Basic information on a wide range of useful plants, plus details of environmental needs where available.
].
Prefers a sunny position[
418
Title
Ecocrop
Publication
 
Author
 
Website
http://ecocrop.fao.org/ecocrop/srv/en/home
Publisher
 
Year
0
ISBN
 
Description
Basic information on a wide range of useful plants, plus details of environmental needs where available.
]. Prefers a fertile, well-drained, medium-textured soil[
418
Title
Ecocrop
Publication
 
Author
 
Website
http://ecocrop.fao.org/ecocrop/srv/en/home
Publisher
 
Year
0
ISBN
 
Description
Basic information on a wide range of useful plants, plus details of environmental needs where available.
]. Prefers a pH in the range 6 - 7.5, tolerating 5.5 - 8.5[
418
Title
Ecocrop
Publication
 
Author
 
Website
http://ecocrop.fao.org/ecocrop/srv/en/home
Publisher
 
Year
0
ISBN
 
Description
Basic information on a wide range of useful plants, plus details of environmental needs where available.
].
Flowering and seeding can be observed almost throughout the year, with a break in the months with the coldest temperatures[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
Mature trees are tolerant of fire, and heavy fires create ideal germination conditions for the small wind-dispersed seeds[
299
Title
Protabase - Plant Resources of Tropical Africa.
Publication
 
Author
 
Website
http://www.prota.org
Publisher
 
Year
0
ISBN
 
Description
An excellent on-line database with detailed information on over 3,200 species of useful plants of Africa.
].
The plant is unable to regenerate in areas suffering from a high level of grazing. Young trees have poor competitive ability[
299
Title
Protabase - Plant Resources of Tropical Africa.
Publication
 
Author
 
Website
http://www.prota.org
Publisher
 
Year
0
ISBN
 
Description
An excellent on-line database with detailed information on over 3,200 species of useful plants of Africa.
].
Plants can recover well after a forest fire[
418
Title
Ecocrop
Publication
 
Author
 
Website
http://ecocrop.fao.org/ecocrop/srv/en/home
Publisher
 
Year
0
ISBN
 
Description
Basic information on a wide range of useful plants, plus details of environmental needs where available.
].
The plant is usually dioecious, but with some polygamous specimens[
299
Title
Protabase - Plant Resources of Tropical Africa.
Publication
 
Author
 
Website
http://www.prota.org
Publisher
 
Year
0
ISBN
 
Description
An excellent on-line database with detailed information on over 3,200 species of useful plants of Africa.
].

Edible Uses

The seeds are used as a condiment or spice[
299
Title
Protabase - Plant Resources of Tropical Africa.
Publication
 
Author
 
Website
http://www.prota.org
Publisher
 
Year
0
ISBN
 
Description
An excellent on-line database with detailed information on over 3,200 species of useful plants of Africa.
].

Medicinal

The flowers of Kousso are very commonly used as an anthelmintic in traditional medicine in Africa. Generally, though, this is a very strong medicine with toxic properties and it must not be taken in large quantities - strong doses can cause fainting, visual disorders or even death[
299
Title
Protabase - Plant Resources of Tropical Africa.
Publication
 
Author
 
Website
http://www.prota.org
Publisher
 
Year
0
ISBN
 
Description
An excellent on-line database with detailed information on over 3,200 species of useful plants of Africa.
]. The plant is also sometimes taken as an abortifacient[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].

The dried and pounded female inflorescence is used as an anthelmintic (especially for expelling tapeworm)[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
]. Traditionally, a tea made from the flowers would be drunk every three months to rid the body of tapeworms[
299
Title
Protabase - Plant Resources of Tropical Africa.
Publication
 
Author
 
Website
http://www.prota.org
Publisher
 
Year
0
ISBN
 
Description
An excellent on-line database with detailed information on over 3,200 species of useful plants of Africa.
]. The tea is drunk before breakfast; about 30 - 180 minutes later its laxative action starts. The head of the tapeworm (scolex) is seldom expelled, so the worm can regrow, hence the need to repeat the treatment every 1 - 3 months[
299
Title
Protabase - Plant Resources of Tropical Africa.
Publication
 
Author
 
Website
http://www.prota.org
Publisher
 
Year
0
ISBN
 
Description
An excellent on-line database with detailed information on over 3,200 species of useful plants of Africa.
].

The roots are cooked with meat and the soup drunk for treating general illness and malaria[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].

The bark may be pounded, added to cold water and the liquid drunk as a remedy for diarrhoea and stomach-ache[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].

The active principles in the flowers are phloroglucinol derivatives, called kosins: kosotoxin, protokosin, kosidin, α-kosin and β-kosin.[
299
Title
Protabase - Plant Resources of Tropical Africa.
Publication
 
Author
 
Website
http://www.prota.org
Publisher
 
Year
0
ISBN
 
Description
An excellent on-line database with detailed information on over 3,200 species of useful plants of Africa.
].
The efficacy of kosso as anthelmintic depends on dosage and the health of the patient. Strong doses of kosso can cause fainting, visual disorders or even death. Usually a dose of 8 - 16g of dried flowers is taken, but some people use as much as 35g.
Although it is often stated that female flowers should be used, most tests reveal no difference in effect between male and female flowers. They can be as effective as the chemical anthelmintics dichlorophen, niclosamide and praziquantel[
299
Title
Protabase - Plant Resources of Tropical Africa.
Publication
 
Author
 
Website
http://www.prota.org
Publisher
 
Year
0
ISBN
 
Description
An excellent on-line database with detailed information on over 3,200 species of useful plants of Africa.
].
Side effects may include irritation of the gastrointestinal tract, salivation, nausea, headache, fainting spells, general weakness and diarrhoea. Some believe that side-effects are more severe when male flowers are used, and that male flowers have greater emetic activity[
299
Title
Protabase - Plant Resources of Tropical Africa.
Publication
 
Author
 
Website
http://www.prota.org
Publisher
 
Year
0
ISBN
 
Description
An excellent on-line database with detailed information on over 3,200 species of useful plants of Africa.
].
In-vitro tests have shown cytotoxic effects against carcinomous cells[
299
Title
Protabase - Plant Resources of Tropical Africa.
Publication
 
Author
 
Website
http://www.prota.org
Publisher
 
Year
0
ISBN
 
Description
An excellent on-line database with detailed information on over 3,200 species of useful plants of Africa.
].

Agroforestry Uses:

The trees are employed in soil-conservation activities[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
A fire-resistant species, it can be planted to form a firebreak[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
The tree constantly sheds leaves, providing mulch and green manure[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
In an experiment in Makete District Tanzania, grain yield of wheat was measured on eight different farms for a two-year period. The threshed wheat yield under a pruned H. abyssinica canopy averaged 810 kg/ha compared to 600kg/ha on parts of the field located at least 30 metres from a tree[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].

Other Uses

The bark is used for dyeing textiles yellowish red[
299
Title
Protabase - Plant Resources of Tropical Africa.
Publication
 
Author
 
Website
http://www.prota.org
Publisher
 
Year
0
ISBN
 
Description
An excellent on-line database with detailed information on over 3,200 species of useful plants of Africa.
].

The heartwood is dark red to red-brown; the sapwood is creamy yellow. The grain is straight, with occasionally some silver grain when cut radially. The wood is medium soft, moderately heavy but not durable, and is subject to attack by borers and termites[
299
Title
Protabase - Plant Resources of Tropical Africa.
Publication
 
Author
 
Website
http://www.prota.org
Publisher
 
Year
0
ISBN
 
Description
An excellent on-line database with detailed information on over 3,200 species of useful plants of Africa.
,
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
]. It is fairly easy to saw; planing may be difficult due to interlocked grain, but the moulding, boring and turning are satisfactory; pre-boring before screwing is essential; nail-holding power is high. The wood has a handsome appearance and is used for making furniture, poles, flooring, carving and cabinet making[
299
Title
Protabase - Plant Resources of Tropical Africa.
Publication
 
Author
 
Website
http://www.prota.org
Publisher
 
Year
0
ISBN
 
Description
An excellent on-line database with detailed information on over 3,200 species of useful plants of Africa.
,
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].
A good source of firewood and charcoal[
303
Title
World Agroforesty Centre
Publication
 
Author
 
Website
http://www.worldagroforestry.org/
Publisher
 
Year
0
ISBN
 
Description
An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
].

Propagation

Seed - they can be stored dry without special requirements for 6 - 12 months. Germination is about 40 - 60% after 2 - 3 weeks from sowing. The seed is very light: there are 400 - 500 seeds per gram[
299
Title
Protabase - Plant Resources of Tropical Africa.
Publication
 
Author
 
Website
http://www.prota.org
Publisher
 
Year
0
ISBN
 
Description
An excellent on-line database with detailed information on over 3,200 species of useful plants of Africa.
].

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