Cochlospermum fraseri

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Cochlospermum fraseri
Cochlospermum fraseri flowers.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malvales
Family: Bixaceae
Genus: Cochlospermum
Species:
C. fraseri
Binomial name
Cochlospermum fraseri
Cochlospermumfraseri1.png
Occurrence data from AVH
Synonyms [2]
  • Maximilianea fraseri(Planch.) Kuntze

Cochlospermum fraseri is a tree in the family Bixaceae with common names cotton tree, kapok bush, and kapok tree. It is native to northwestern Australia from the Kimberly region of Western Australia to the northern parts of the Northern Territory. [3] [4] [5]

Contents

Description

Cochlospermum fraseri is a deciduous shrub or small tree which can grow to 7 m tall. It flowers from March to October, the inflorescence being a terminal panicle. The flowers are asymmetric, having five sepals in two whorls, with the outer two sepals being shorter than the inner three, and it has numerous stamens. The flowers often appear when the plant has no leaves. It fruits from June to March, with the fruit being a woody capsule having 3 to 5 valves. The seeds are surrounded by fluffy, "cottony" threads, giving rise to the common name kapok tree. [5] [4] [6] [7]

Taxonomy

French botanist Jules Émile Planchon described this species in 1847 from Melville Island off the north coast of Australia. [8] Two subspecies are recognised: subspecies fraseri, found mainly from Katherine to Melville Island, has smooth leaves and 2 mm-long bracts, and subspecies heteronemum, from Katherine west to the Ord River, has finely furred leaves and 40–58 mm-long bracts. [5]

Distribution and habitat

It is found in the bioregions of Central Kimberley, Dampierland, Gulf Fall and Uplands, Northern Kimberley, Ord Victoria Plain, Pine Creek, Victoria Bonaparte in the Northern Territory., [5] and the bioregions of Central Kimberley, Dampierland, Great Sandy Desert, Northern Kimberley, Ord Victoria Plain, Victoria Bonaparte in Western Australia. [4]

Cochlospermum fraseri grows in open eucalypt woodland on a variety of soils, including sands, gravelly soils, and heavy clay soils. [5]

Uses

The indigenous people of northern Australia would eat the flowers, either raw or cooked, and the roots of young plants. [6] They also used to use the fluff from the seeds as body decoration. [7]

This plant is a "calendar" plant of the Jawoyn people: flowering indicates when freshwater crocodiles are laying eggs, fruiting the time for collecting them. [7]

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References

  1. "Cochlospermum fraseri". Australian Plant Name Index (APNI). Centre for Australian National Biodiversity Research, Australian Government . Retrieved 16 May 2024.
  2. 1 2 "Cochlospermum fraseri Planch". Plants of the World Online . Royal Botanic Gardens, Kew. 2024. Retrieved 16 May 2024.
  3. "Cochlospermum fraseri". Atlas of Living Australia . National Collaborative Research Infrastructure Strategy (NCRIS), Australian Government . Retrieved 16 May 2024.
  4. 1 2 3 "Cochlospermum fraseri Planch". Western Australian Herbarium (1998–). Florabase—the Western Australian Flora. Department of Biodiversity, Conservation and Attractions, Government of Western Australia. 2021. Retrieved 16 May 2024.
  5. 1 2 3 4 5 "Cochlospermum fraseri". FloraNT, Northern Territory Herbarium . Northern Territory Government, Darwin. 2013. Retrieved 16 May 2024.
  6. 1 2 Brock, John (2001). Native plants of northern Australia. Sydney: Reed New Holland. p. 124. ISBN   9781925546828. Archived from the original on 14 June 2022.
  7. 1 2 3 Moore, Phillip (2005). A Guide to Plants of Inland Australia. Sydney: Reed New Holland. p. 504. ISBN   9781876334864 . Retrieved 16 May 2024.
  8. Planchon, Jules Émile (1847). "Sur la nouvelle famille des Cochlospermées". London Journal of Botany (in French). 6: 307 via BHL.