Gossypium herbaceum

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Rosids
Cladus: Eurosids II
Ordo: Malvales

Familia: Malvaceae
Subfamilia: Malvoideae
Tribus: Gossypieae
Genus: Gossypium
Subgenus: G. subg. Gossypium
Sectio: G. sect. Gossypium
Subsectio: G. subsect. Gossypium
Species: Gossypium herbaceum
Subspecies: G. h. subsp. africanum – G. h. subsp. herbaceum
Name

Gossypium herbaceum L., 1753.
Notes

Hutchison (1937) proprosed the following four races for cultivars. Following the International Code of Nomenclature for Cultivated Plants, they are probably merely Cultivar Groups.

Gossypium herbaceum race acerifolium
Gossypium herbaceum race africanum
Gossypium herbaceum race kuljianum
Gossypium herbaceum race persicum

References

Hutchinson, J. B. & Ghose, R. L. M. 1937. The classification of the cottons of Asia and Africa. - Inst. Plant Industry Bull. 8: 22 pp.
Linnaeus, C.1753. Species Plantarum 2:693.
USDA, ARS, Germplasm Resources Information Network. Gossypium herbaceum in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 07-Oct-06.

Vernacular names
suomi: Intianpuuvilla

Gossypium herbaceum, commonly known as Levant cotton,[1] is a species of cotton native to the semi-arid regions of sub-Saharan Africa and Arabia, where it still grows in the wild as a perennial shrub.

Description

G. herbaceum has high stems that grow 60 to 180 centimetres (2 to 6 ft) high with wide, hairy leaves. Their flowers are small and yellow with a purple center. The plant exhibits extrafloral nectaries[2] (calyculal nectaria, found on the receptacle, near the base of the calyculus).

When ripe and in warm weather, the flower capsule will burst and expose the cotton surrounding the seeds firmly. The cotton produced by this plant is short, about 5 centimetres (2 in) long and is firmly attached to the seed, which is covered in hairy down. Cotton fibres grow from the surface of the seeds and can be separated from these by hand or mechanically; the long fibres are called lint. The cotton fibres consist of nearly pure cellulose. The expected yield is 340 kilograms per hectare (300 pounds per acre).[3]
Uses

The main use of cotton lint is to produce textiles for clothing. The fibres are spun into yarns and these are woven into fabrics, in the farm or house or in factories. Cotton as a fabric is much appreciated because of its comfortable, breathable properties, its resistance[clarification needed] and also because it is easily stained.

The cotton plant itself has medicinal uses, and can be cultivated traditionally, in house backyards, for, e.g., women's menstrual cycle pains and irregular bleeding. It is also known to be used after birth to expel the placenta and to increase the lactation, as well as for gastrointestinal issues, such as hemorrhages and diarrhea, for nausea, fevers and headaches.[citation needed]

In the Levant seeds of Gossypium herbaceum were also used for food, feed or oil extraction. Cotton seeds, containing up to 20% oil and 20% proteins, are potentially highly rich as food or feed. Nevertheless, small glands present in all the plant organs of the Gossypium species, except the roots, and especially abundant in the seeds, contain toxic chemicals, in particular the polyphenolic compound Gossypol. The gossypol is highly toxic to animals and is an element of the plant direct defence system against herbivorous arthropods. It can cause severe growth and development disorders in humans as well as domestic animals, particularly monogastric animals, while polygastrics are more or less tolerant. For this reason, using oil or whole seeds for human nutrition is dependent upon some way of elimination of the gossypol, through heating or other treatment. The gossypol extracted from cotton seeds has a potential use as a male contraceptive but can cause irreversible infertility after repeated use. In lab rat studies, it has been able to stop early pregnancies.[3][4]

References

BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
Induction of cotton extrafloral nectar production in response to herbivory does not require a herbivore-specific elicitor. F. L. Wäckers and R. Wunderlin, Proceedings of the 10th International Symposium on Insect-Plant Relationships pp 149-154, Part of the Series Entomologica book series (SENT, volume 56)
Grieve, M. "Cotton Root". A modern herbal. Botanical.com. Retrieved 21 February 2014.
Khan S, Balick MJ. Therapeutic plants of ayurveda: A review of selected clinical and other studies for 166 species. The J Alt & Comp Medicine. 2001; 7(5):405-515.

External links