The Malvacea Part 2
Malvacea - Part 2
PART 2 of the 3 part series looking at some of these Genus groups in the Malvacea.
Genus Cola
Cola acuminate flower
African Cola (125 species) are noted for having separate male and female flowers borne in often quite large and branched inflorescences. Those sepals are fused and there are no petals. Caffeine-containing seeds of Cola are used in cola drinks.
Cola nuts
Genus Corchorus
This genus has many species used as a source of jute fiber.
- The African hemp (Sparmannia africana) is native to Africa and Madagascar.
- Byttneria is pantropical but especially South American.
- Hermannia is especially common in Africa.
- Melochia is mainly New World.
- Ayenia is found in tropical and warm temperate regions of the New World.
- Tossa jute Corchorus olitorius is from Africa
- White jutes Corchorus capsularis is common in Arab countries
Bundles of Jute fiber
Tossa Jute is cultivated as a source of jute fiber and for its edible leaves. Grown throughout tropical Asia and Africa. Its mucilaginous leaves and young stems are commonly eaten as a vegetable similar to okra.The plant is especially popular in a number of Arab countries, where it is used in a soup-based dish known as molokhia, or mulukhiyyah.White Jute, is considered to be somewhat better to those of the Tossa jute.
Genus Dipterocarpus
Many species provide a variety of products in addition to useful timber.
Dipterocarpus glandulosa flowers
- yields gurjun balsam, used in medicines.
Shorea robusta tree
- a valuable timber tree that also produces useful resins.
Dryobalanops aromatic crystals
- produces Borneo camphor
used in East Asia for medicines, varnishes, and embalming.
Vateria indica crystals
- produces a gum resin known as Indian copal
Genus Durio
The famous durian fruits are obtained from Durio zibethinus
The massive spiny fruits are opened to reveal large seeds surrounded by a creamy fleshy covering, or aril. Some people cannot stand the smell or taste of durians, whereas others think they are one of the world’s finest delicacies.
Genus Gossypium
Cotton! There are 4 species – all produce fibers surrounding their seeds that we harvest and spin into cloth.
Gossypium arboretum - Tree cotton
Commonly called tree cotton, is a species of cotton native to India, Pakistan and Bangladesh. Is grown in other tropical and subtropical regions of the Old World.There is evidence of its cultivation as long ago as the Harappan civilization of the Indus Valley for the production of cotton textiles. A Bronze Age people lasting from 3300 BCE to 1300 BCE. A long time ago !
Gossypium herbaceum - Levant cotton
A species of cotton native to the semi-arid regions of sub-Saharan Africa and Arabia, where it still grows perennially in the wild as a shrub.
Gossypium hirsutum - Mexican cotton
Also known as upland cotton, it is the most widely planted species of cotton in the world. It is native to Mexico, the West Indies (Cuba, Dominican Republic, and Puerto Rico), northern South America, Central America and possibly tropical Florida.Globally, about 90% of all cotton production is of cultivars derived from this species. In the United States, the world's largest exporter of cotton, it constitutes approximately 95% of all cotton production.Archeological evidence from the Tehuacan Valley in Mexico shows the cultivation of this species as long ago as 3,500 BC.
Gossypium barbadense - Long fiber cotton - or known as "Egyptian Cotton"
Originated in southwest Ecuador and northwest Peru. It is now cultivated around the world. It accounts for about 5% of the world's cotton production.“Egyptian cotton” is a market class representing G. barbadense grown in Egypt. Sometimes the terms "Egyptian long-staple" and Egyptian extra-long staple" are used."Pima" is a name often used for cotton grown in the Southwestern United States. This market class consists of extra-long G. barbadense. It was originally known as "American Egyptian", but eventually the name "Pima" became more popular.
Stay tuned for next weeks' Part 3 of the Malvacea......
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Article written by our Staff Horticulturist, Peter B Morris, BSc, MSc, MBAAll photographs used with permission @SHUTTERSTOCK