Bombax
Encyclopedia
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Malvaceae
Malvaceae, or the mallow family, is a family of flowering plants containing over 200 genera with close to 2,300 species. Judd & al. Well known members of this family include okra, jute and cacao...
. They are native to western Africa
Africa
Africa is the world's second largest and second most populous continent, after Asia. At about 30.2 million km² including adjacent islands, it covers 6% of the Earth's total surface area and 20.4% of the total land area...
, the Indian subcontinent
Indian subcontinent
The Indian subcontinent, also Indian Subcontinent, Indo-Pak Subcontinent or South Asian Subcontinent is a region of the Asian continent on the Indian tectonic plate from the Hindu Kush or Hindu Koh, Himalayas and including the Kuen Lun and Karakoram ranges, forming a land mass which extends...
, Southeast Asia
Southeast Asia
Southeast Asia, South-East Asia, South East Asia or Southeastern Asia is a subregion of Asia, consisting of the countries that are geographically south of China, east of India, west of New Guinea and north of Australia. The region lies on the intersection of geological plates, with heavy seismic...
, as well as sub-tropical regions of East Asia
East Asia
East Asia or Eastern Asia is a subregion of Asia that can be defined in either geographical or cultural terms...
and northern Australia
Australia
Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...
. Common names for the genus include Silk Cotton Tree, Simal, Red Cotton Tree, Kapok and simply Bombax. In Chinese they are known as Mumian , meaning "tree cotton". Currently three species are recognised, though many plants have been placed in the genus that were later moved.
The genus is best known for the species B. ceiba
Bombax ceiba
Bombax ceiba, like other trees of the genus Bombax, is commonly known as cotton tree or tree cotton. This tropical tree has a straight tall trunk and its leaves are deciduous in winter. Red flowers with 5 petals appear in the spring before the new foliage. It produces a capsule which, when ripe,...
, which is widely cultivated throughout tropical and sub-tropical regions of the world. It is native to southern and eastern Asia
Asia
Asia is the world's largest and most populous continent, located primarily in the eastern and northern hemispheres. It covers 8.7% of the Earth's total surface area and with approximately 3.879 billion people, it hosts 60% of the world's current human population...
and northern Australia
Australia
Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...
.
Bombax species are used as food plants by the larva
Larva
A larva is a distinct juvenile form many animals undergo before metamorphosis into adults. Animals with indirect development such as insects, amphibians, or cnidarians typically have a larval phase of their life cycle...
e of some Lepidoptera
Lepidoptera
Lepidoptera is a large order of insects that includes moths and butterflies . It is one of the most widespread and widely recognizable insect orders in the world, encompassing moths and the three superfamilies of butterflies, skipper butterflies, and moth-butterflies...
species including the leaf-miner Bucculatrix crateracma
Bucculatricidae
Bucculatricidae or is a family of moths. This small family has representatives in all parts of the world. Some authors place the group as a subfamily of the family Lyonetiidae....
which feeds exclusively on Bombax ceiba
Bombax ceiba
Bombax ceiba, like other trees of the genus Bombax, is commonly known as cotton tree or tree cotton. This tropical tree has a straight tall trunk and its leaves are deciduous in winter. Red flowers with 5 petals appear in the spring before the new foliage. It produces a capsule which, when ripe,...
.
The tree appears on the flag of Equatorial Guinea
Flag of Equatorial Guinea
The flag of Equatorial Guinea was adopted on August 21, 1979.-Features and symbolism:The flag is a horizontal tricolor, with green, white and red stripes and a blue triangle at the hoist.* Green symbolizes the natural resources and jungles of the country....
.
Description
Bombax species are among the largest treeTree
A tree is a perennial woody plant. It is most often defined as a woody plant that has many secondary branches supported clear of the ground on a single main stem or trunk with clear apical dominance. A minimum height specification at maturity is cited by some authors, varying from 3 m to...
s in their regions, reaching 30 to 40 metres in height and up to 3 metres trunk diameter. The leaves
Leaf
A leaf is an organ of a vascular plant, as defined in botanical terms, and in particular in plant morphology. Foliage is a mass noun that refers to leaves as a feature of plants....
are compound with entire margins and deciduous
Deciduous
Deciduous means "falling off at maturity" or "tending to fall off", and is typically used in reference to trees or shrubs that lose their leaves seasonally, and to the shedding of other plant structures such as petals after flowering or fruit when ripe...
, being shed in the dry-season. They measure 30 to 50 cm across and are palmate in shape with 5 to 9 leaflet
Leaflet
A leaflet in botany is a part of a compound leaf. A leaflet may resemble an entire leaf, but it is not borne on a stem as a leaf is, but rather on a vein of the whole leaf. Compound leaves are common in many plant families...
s. The calyx
Sepal
A sepal is a part of the flower of angiosperms . Collectively the sepals form the calyx, which is the outermost whorl of parts that form a flower. Usually green, sepals have the typical function of protecting the petals when the flower is in bud...
is deciduous, meaning it does not persist on the fruits.
They bear 5 to 10 cm long red flower
Flower
A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants . The biological function of a flower is to effect reproduction, usually by providing a mechanism for the union of sperm with eggs...
s between January and March while the tree is still leafless. The stamen
Stamen
The stamen is the pollen producing reproductive organ of a flower...
s are present in bundles in two whorls, while the staminal column lacks lobes. The ovary
Ovary
The ovary is an ovum-producing reproductive organ, often found in pairs as part of the vertebrate female reproductive system. Ovaries in anatomically female individuals are analogous to testes in anatomically male individuals, in that they are both gonads and endocrine glands.-Human anatomy:Ovaries...
matures into a husk containing seeds covered by a fibre similar to that of the kapok
Kapok
Ceiba pentandra is a tropical tree of the order Malvales and the family Malvaceae , native to Mexico, Central America and the Caribbean, northern South America, and to tropical west Africa...
(Ceiba pentandra) and to cotton
Cotton
Cotton is a soft, fluffy staple fiber that grows in a boll, or protective capsule, around the seeds of cotton plants of the genus Gossypium. The fiber is almost pure cellulose. The botanical purpose of cotton fiber is to aid in seed dispersal....
, though with shorter fibres than cotton, that does not lend itself to spinning, making it unusable as a textile product.
Castle of the Devil
According to the folklore of Trinidad and TobagoTrinidad and Tobago
Trinidad and Tobago officially the Republic of Trinidad and Tobago is an archipelagic state in the southern Caribbean, lying just off the coast of northeastern Venezuela and south of Grenada in the Lesser Antilles...
, the Castle of the Devil is a huge silk cotton tree growing deep in the forest in which Bazil the demon of death was imprisoned by a carpenter. The carpenter tricked the devil into entering the tree in which he carved seven rooms, one above the other, into the trunk. Folklore claims that Bazil would still resides in that tree if it had not been cut down by government non believers in 2002. Since then the murder rate has sky rocketed with the demon of death possessing the weak to cause them to kill people as they rob them of minor possessions.
Further reading
External links
- Germplasm Resources Information Network: Bombax
- Haryana Online: Semul
- Shimul (in BengaliBengali languageBengali or Bangla is an eastern Indo-Aryan language. It is native to the region of eastern South Asia known as Bengal, which comprises present day Bangladesh, the Indian state of West Bengal, and parts of the Indian states of Tripura and Assam. It is written with the Bengali script...
information website AbasarAbasar - An Information Website in Bengali-Background:Established in 2002, it covers health, law, environment, women's issues, science, literature, culture, food, art and film. The site contains a concise version of the famous encyclopedia, Bharatkosh...
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