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''Kigelia'' is a genus of
flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...
s in the family
Bignoniaceae Bignoniaceae is a family of flowering plants in the order Lamiales commonly known as the bignonias or trumpetvines.Vernon H. Heywood, Richard K. Brummitt, Ole Seberg, and Alastair Culham. ''Flowering Plant Families of the World''. Firefly Books: ...
. The genus consists of only one species, ''Kigelia africana'', which occurs throughout tropical
Africa Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area ...
. The so-called sausage tree grows a
poison Poison is a chemical substance that has a detrimental effect to life. The term is used in a wide range of scientific fields and industries, where it is often specifically defined. It may also be applied colloquially or figuratively, with a broa ...
ous fruit that is up to long, weighs about , and resembles a sausage in a casing.


Etymology

The genus name comes from the Mozambican
Bantu Bantu may refer to: *Bantu languages, constitute the largest sub-branch of the Niger–Congo languages *Bantu peoples, over 400 peoples of Africa speaking a Bantu language * Bantu knots, a type of African hairstyle *Black Association for National ...
name, ''kigeli-keia'', while the common names sausage tree and cucumber tree refer to the long,
sausage A sausage is a type of meat product usually made from ground meat—often pork, beef, or poultry—along with salt, spices and other flavourings. Other ingredients, such as grains or breadcrumbs may be included as fillers or extenders. ...
-like fruit. Its name in
Afrikaans Afrikaans (, ) is a West Germanic language that evolved in the Dutch Cape Colony from the Dutch vernacular of Holland proper (i.e., the Hollandic dialect) used by Dutch, French, and German settlers and their enslaved people. Afrikaans gra ...
''worsboom'' also means sausage tree, and its
Arabic Arabic (, ' ; , ' or ) is a Semitic languages, Semitic language spoken primarily across the Arab world.Semitic languages: an international handbook / edited by Stefan Weninger; in collaboration with Geoffrey Khan, Michael P. Streck, Janet C ...
name means "the father of kit-bags".


Description

It is a
tree In botany, a tree is a perennial plant with an elongated stem, or trunk, usually supporting branches and leaves. In some usages, the definition of a tree may be narrower, including only woody plants with secondary growth, plants that are ...
growing up to tall and it typically has spreading branches. The bark is grey and smooth at first, peeling on older trees. It can be as thick as on a diameter branch. The wood is pale brown or yellowish, undifferentiated and not prone to cracking.


Foliage

The tree is
evergreen In botany, an evergreen is a plant which has foliage that remains green and functional through more than one growing season. This also pertains to plants that retain their foliage only in warm climates, and contrasts with deciduous plants, which ...
where rainfall occurs throughout the year, but
deciduous In the fields of horticulture and Botany, the term ''deciduous'' () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed leaves, usually in the autumn; to the shedding of petals, aft ...
where there is a long
dry season The dry season is a yearly period of low rainfall, especially in the tropics. The weather in the tropics is dominated by the tropical rain belt, which moves from the northern to the southern tropics and back over the course of the year. The te ...
. The
leaves A leaf (plural, : leaves) is any of the principal appendages of a vascular plant plant stem, stem, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", wh ...
are opposite or in whorls of three, long,
pinnate Pinnation (also called pennation) is the arrangement of feather-like or multi-divided features arising from both sides of a common axis. Pinnation occurs in biological morphology, in crystals, such as some forms of ice or metal crystals, and in ...
, with six to ten oval leaflets up to long and in diameter,the terminal leaflet can be either present or absent.


Flowers

The
flower A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants (plants of the division Angiospermae). The biological function of a flower is to facilitate reproduction, usually by providing a mechani ...
s (and later the fruit) hang down from branches on long flexible stems ( long). According to author/nature photographer Winston Williams, these stems, or peduncles can be up to in length. Flowers are produced in
panicle A panicle is a much-branched inflorescence. (softcover ). Some authors distinguish it from a compound spike inflorescence, by requiring that the flowers (and fruit) be pedicellate (having a single stem per flower). The branches of a panicle are of ...
s; they are bell-shaped (similar to those of the
African tulip tree ''Spathodea'' is a genus in the plant family Bignoniaceae. The single species it contains, ''Spathodea campanulata'', is commonly known as the African tulip tree. The tree grows between tall and is native to tropical dry forests of Africa. It ha ...
but broader and much darker and more waxy), orange to maroon or purplish green, and about wide. Individual flowers do not hang down but are oriented horizontally.


Fruit

The
fruit In botany, a fruit is the seed-bearing structure in flowering plants that is formed from the ovary after flowering. Fruits are the means by which flowering plants (also known as angiosperms) disseminate their seeds. Edible fruits in particu ...
is a woody
berry A berry is a small, pulpy, and often edible fruit. Typically, berries are juicy, rounded, brightly colored, sweet, sour or tart, and do not have a stone or pit, although many pips or seeds may be present. Common examples are strawberries, raspb ...
from long and up to in diameter, but has been reported. Typically it weighs between but occasionally up to , and hangs down on long, rope-like peduncles. The fruit pulp is fibrous, containing many
seed A seed is an embryonic plant enclosed in a protective outer covering, along with a food reserve. The formation of the seed is a part of the process of reproduction in seed plants, the spermatophytes, including the gymnosperm and angiospe ...
s.


Species associations

Some birds are attracted to the flowers and the strong stems of each flower make ideal footholds. Their scent is most notable at night indicating that they are adapted to pollination by
bat Bats are mammals of the order Chiroptera.''cheir'', "hand" and πτερόν''pteron'', "wing". With their forelimbs adapted as wings, they are the only mammals capable of true and sustained flight. Bats are more agile in flight than most bi ...
s, which visit them for pollen and nectar. The flowers also remain open by day however, and are freely visited by many insect pollinators, particularly large species such as
carpenter bee Carpenter bees are species in the genus ''Xylocopa'' of the subfamily Xylocopinae. The genus includes some 500 bees in 31 subgenera. The common name "carpenter bee" derives from their nesting behavior; nearly all species burrow into hard plant m ...
s. The fruit are eaten by several species of
mammal Mammals () are a group of vertebrate animals constituting the class Mammalia (), characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fur or ...
s, including
baboon Baboons are primates comprising the genus ''Papio'', one of the 23 genera of Old World monkeys. There are six species of baboon: the hamadryas baboon, the Guinea baboon, the olive baboon, the yellow baboon, the Kinda baboon and the chacma ba ...
s,
bushpig :''"Bush pig" may also refer to the red river hog. The bushpig (''Potamochoerus larvatus'') is a member of the pig family that inhabits forests, woodland, riverine vegetation and cultivated areas in East and Southern Africa. Probably introduced ...
s,
savannah elephant The African bush elephant (''Loxodonta africana'') is one of two extant African elephant species and one of three extant elephant species. It is the largest living terrestrial animal, with bulls reaching a shoulder height of up to and a body m ...
s,
giraffe The giraffe is a large African hoofed mammal belonging to the genus ''Giraffa''. It is the tallest living terrestrial animal and the largest ruminant on Earth. Traditionally, giraffes were thought to be one species, ''Giraffa camelopardalis ...
s,
hippopotamus The hippopotamus ( ; : hippopotamuses or hippopotami; ''Hippopotamus amphibius''), also called the hippo, common hippopotamus, or river hippopotamus, is a large semiaquatic mammal native to sub-Saharan Africa. It is one of only two extan ...
es,
monkey Monkey is a common name that may refer to most mammals of the infraorder Simiiformes, also known as the simians. Traditionally, all animals in the group now known as simians are counted as monkeys except the apes, which constitutes an incomple ...
s, and
porcupines Porcupines are large rodents with coats of sharp spines, or quills, that protect them against predation. The term covers two families of animals: the Old World porcupines of family Hystricidae, and the New World porcupines of family, Erethizont ...
. The seeds are dispersed in their dung. The seeds are also eaten by brown parrots and
brown-headed parrot The brown-headed parrot (''Poicephalus cryptoxanthus'') is a south-eastern African parrot. Description The general plumage colour is green, indeed Sinclair et al., (1993) describe the species as “the greenest parrot of the sub-region”. The ...
s, and the tree's foliage by elephants and
greater kudu The greater kudu (''Tragelaphus strepsiceros'') is a woodland antelope found throughout eastern and southern Africa. Despite occupying such widespread territory, they are sparsely populated in most areas due to declining habitat, deforestation, ...
(Joffe 2003; del Hoyo et al. 1997). Introduced specimens in Australian parks are very popular with
cockatoo A cockatoo is any of the 21 parrot species belonging to the family Cacatuidae, the only family in the superfamily Cacatuoidea. Along with the Psittacoidea (true parrots) and the Strigopoidea (large New Zealand parrots), they make up the ord ...
s.


Cultivation and uses

The fresh fruit is
poison Poison is a chemical substance that has a detrimental effect to life. The term is used in a wide range of scientific fields and industries, where it is often specifically defined. It may also be applied colloquially or figuratively, with a broa ...
ous to humans and strongly
purgative Laxatives, purgatives, or aperients are substances that loosen stools and increase bowel movements. They are used to treat and prevent constipation. Laxatives vary as to how they work and the side effects they may have. Certain stimulant, lubri ...
; fruit are prepared for consumption by drying, roasting or fermentation (Joffe 2003; McBurney 2004). In Botswana, the timber is used for
makoro A mokoro (also spelled ''makoro'', Setswana-English-Setswana Dictionary, Macmillan Botswana, 4th edition) is a type of canoe commonly used in the Okavango Delta and on the Chobe River in Botswana. It is propelled through the shallow waters of th ...
s, yokes and oars. Extracts of the bark, flower and fruit of ''Kigelia africana'' have been increasingly used in skincare products due to the high level of antioxidant and anti-inflammatory constituents. The hard shell (skin) of the fruit can be hollowed out, cleaned, and made into useful, durable containers of varying sizes. The tree is widely grown as an
ornamental tree Ornamental plants or garden plants are plants that are primarily grown for their beauty but also for qualities such as scent or how they shape physical space. Many flowering plants and garden varieties tend to be specially bred cultivars that i ...
in tropical regions for its decorative flowers and unusual fruit. Planting sites should be selected carefully, as the falling fruit can cause serious injury to people and damage vehicles parked under the trees. Around Mount Kenya, especially among the
Kikuyu Kikuyu or Gikuyu (Gĩkũyũ) mostly refers to an ethnic group in Kenya or its associated language. It may also refer to: * Kikuyu people, a majority ethnic group in Kenya *Kikuyu language, the language of Kikuyu people *Kikuyu, Kenya, a town in Cent ...
,
Embu Embu may refer to: Places ; in Brazil * Embu das Artes * Embu-Guaçu ; in Kenya * Embu, Kenya * Embu County Other * Embu people of Kenya *Embu language Embu, also known as Kîembu, is a Bantu language of Kenya. It is spoken by the Embu peopl ...
and the
Akamba The Kamba or Akamba (sometimes called Wakamba) people are a Bantu ethnic group who predominantly live in the area of Kenya stretching from Nairobi to Tsavo and north to Embu, in the southern part of the former Eastern Province. This land is ...
, the dried fruits are used to make an alcoholic beverage (''muratina'' in
Kikuyu Kikuyu or Gikuyu (Gĩkũyũ) mostly refers to an ethnic group in Kenya or its associated language. It may also refer to: * Kikuyu people, a majority ethnic group in Kenya *Kikuyu language, the language of Kikuyu people *Kikuyu, Kenya, a town in Cent ...
,
Aembu The Embu are a Bantu people inhabiting Embu county in Kenya. They speak the Embu language as a mother tongue. To the south of Embu are to be found their cousins, the Mbeere people. In essence Embu county encompasses the ethnic Kî embu diale ...
and ''kaluvu'' in
Kamba Kamba may refer to: *Kamba people of Kenya *Bena-Kamba, a community in the Democratic Republic of the Congo *Khampa, also spelled Kamba, Tibetan people of Kham Kham (; ) is one of the three traditional Tibetan regions, the others being Amdo in ...
), which is a core component in cultural events in central Kenya. The fruit is harvested, split into two along the grain, before being dried in the sun. The dried fruits are then inserted into a fermentation vessel with older, in-use ''muratina'' (''prural'') to activate and inoculate the new ones with yeast. The more the cultures are used, the more potent they become in converting sugars from sugarcane juice and honey to carbon dioxide and alcohol. The alcoholic drink is usually reserved for special occasions like weddings, dowry and burial ceremonies.


Gallery

File:Sausage tree bark 01A.jpg, Detail of bark of the sausage tree File:Sausage tree flower green 01B.jpg, Developing flower File:Sausage tree flower green A01.jpg, Sausage tree
inflorescence An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed o ...
File:Sausage tree flower ripe 01A.jpg, Fallen sausage tree flower corollas File:Sausage tree fruit A01.jpg, Fruit of a sausage tree File:Kigelia africana -flower.JPG, ''Kigelia africana'' flower at
Pondicherry Pondicherry (), now known as Puducherry ( French: Pondichéry ʊdʊˈtʃɛɹi(listen), on-dicherry, is the capital and the most populous city of the Union Territory of Puducherry in India. The city is in the Puducherry district on the sout ...
, in
Puducherry Puducherry or Pondicherry may refer to: * Puducherry (union territory), a union territory of India ** Pondicherry, capital of the union territory of Puducherry ** Puducherry district, a district of the union territory of Puducherry ** Puducherry tal ...
,
India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...
File:Leaves on the tree Im IMG 4108.jpg, Leaves on the tree in
Kolkata Kolkata (, or , ; also known as Calcutta , the official name until 2001) is the capital of the Indian state of West Bengal, on the eastern bank of the Hooghly River west of the border with Bangladesh. It is the primary business, comme ...
,
West Bengal West Bengal (, Bengali: ''Poshchim Bongo'', , abbr. WB) is a state in the eastern portion of India. It is situated along the Bay of Bengal, along with a population of over 91 million inhabitants within an area of . West Bengal is the fourt ...
,
India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...
File:Flower bud I IMG 4104.jpg, Flower bud in
Kolkata Kolkata (, or , ; also known as Calcutta , the official name until 2001) is the capital of the Indian state of West Bengal, on the eastern bank of the Hooghly River west of the border with Bangladesh. It is the primary business, comme ...
,
West Bengal West Bengal (, Bengali: ''Poshchim Bongo'', , abbr. WB) is a state in the eastern portion of India. It is situated along the Bay of Bengal, along with a population of over 91 million inhabitants within an area of . West Bengal is the fourt ...
,
India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...
. File:Sausage Tree in Botswana.JPG, A sausage tree in
Botswana Botswana (, ), officially the Republic of Botswana ( tn, Lefatshe la Botswana, label=Setswana, ), is a landlocked country in Southern Africa. Botswana is topographically flat, with approximately 70 percent of its territory being the Kalahar ...
in use as an airport departure lounge File:Seeds and husk of Kigelia africana.JPG, Seeds and husk of a broken fruit,
Pune Pune (; ; also known as Poona, (List of renamed Indian cities and states#Maharashtra, the official name from 1818 until 1978) is one of the most important industrial and educational hubs of India, with an estimated population of 7.4 million ...
, India. File:Kigelia africana - sausage tree.JPG, ''Kigelia africana'' – sausage tree File:Kigelia Africana with fruits, Trinidad.JPG, ''Kigelia africana'' with unripe fruits: campus of UWI, Trinidad, Feb. 2015 File:Kigelia Africana.JPG, ''Kigelia africana'': campus of U. West Indies, Trinidad, Feb. 2015 File:Sausage Tree (Kigela africana).JPG, Entryway at the
Lincoln Park Conservatory The Lincoln Park Conservatory (1.2 ha / 3 acres) is a conservatory and botanical garden in Lincoln Park in Chicago, Illinois. The conservatory is located at 2391 North Stockton Drive just south of Fullerton Avenue, west of Lake Shore Drive, and ...
in Chicago, Il File:Kp Kigelia pinnata flowers IMG 9166 (2216465734).jpg, Inflorescence: ''
Kigelia africana ''Kigelia'' is a genus of flowering plants in the family Bignoniaceae. The genus consists of only one species, ''Kigelia africana'', which occurs throughout tropical Africa. The so-called sausage tree grows a poisonous fruit that is up to long ...
''. UQ,
St Lucia Saint Lucia ( acf, Sent Lisi, french: Sainte-Lucie) is an island country of the West Indies in the eastern Caribbean. The island was previously called Iouanalao and later Hewanorra, names given by the native Arawaks and Caribs, two Amerindia ...
,
Brisbane Brisbane ( ) is the capital and most populous city of the states and territories of Australia, Australian state of Queensland, and the list of cities in Australia by population, third-most populous city in Australia and Oceania, with a populati ...
File:Kp Kigelia pinnata IMG 8964 (2214369810).jpg, Fruit & flowers: ''
Kigelia africana ''Kigelia'' is a genus of flowering plants in the family Bignoniaceae. The genus consists of only one species, ''Kigelia africana'', which occurs throughout tropical Africa. The so-called sausage tree grows a poisonous fruit that is up to long ...
''. UQ,
St Lucia Saint Lucia ( acf, Sent Lisi, french: Sainte-Lucie) is an island country of the West Indies in the eastern Caribbean. The island was previously called Iouanalao and later Hewanorra, names given by the native Arawaks and Caribs, two Amerindia ...
,
Brisbane Brisbane ( ) is the capital and most populous city of the states and territories of Australia, Australian state of Queensland, and the list of cities in Australia by population, third-most populous city in Australia and Oceania, with a populati ...


References


Bibliography

*del Hoyo, J., Elliott, A., & Sargatal, J., eds. (1997). ''Handbook of the Birds of the World'' 4: 415. Lynx Edicions. *Huxley, A., ed. (1992). ''Kigelia''. In ''The New RHS Dictionary of Gardening'' 2: 735. Macmillan. *Joffe, P. (2003)
PlantZAfrica: ''Kigelia africana''
*McBurney, R. (2004)

Royal Botanic Gardens, Kew.


External links

*
Travel Africa: Sausage Tree
{{Taxonbar, from1=Q3009148, from2=Q522883 Bignoniaceae Bignoniaceae genera Trees of Africa Fruits originating in Africa Plants used in traditional African medicine Decorative fruits and seeds Monotypic Lamiales genera