Genus of plants
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Kleinhovia is a monotypic genus of plants in the cotton, hibiscus and cacao family Malvaceae. The sole species in the genus is Kleinhovia hospita, commonly known as guest tree, an evergreen tree native to Indonesia, Malaysia and other parts of tropical Asia and the Pacific.
Description.
"Kleinhovia hospita" is an evergreen, bushy tree growing up to high, with a dense rounded crown and upright pink sprays of flowers and fruits. Leaves are simple and alternate; stipules are ensiform to linear, about long; petioles are up to long; the leaf-blade is ovate to heart-shaped, glabrous on both sides, with the apex pointed. Secondary veins occur in 6–8 pairs, palmately nerved.
The flowers of "K. hospita" are terminal, in loose panicles protruding from the crown; flowers are about wide, coloured pale pink; pedicels are up to long; bracteoles are lanceolate, to long, ;dfn id="" ;pubescent ;/dfn ;; gynandrophores are about long and pubescent; there are 5 sepals, linear lanceolate, about long, pink, tomentose; 5 petals, inconspicuous, the upper one being yellow; 15 stamens, ;dfn id="" ;monadelphous ;/dfn ;, up to long, staminal tube broadly campanulate, adanate to gynandrophore, 5-lobed, each lobe having 3 anthers and alternating with staminodes; the anthers are sessile and extrorse; pistil occur with a 5-celled, pilose ovary, one style and a capitate, with a 5-lobed stigma. "K. hospita" flowers throughout the year.
Fruit production starts early, often in the third year after planting. The fruit of "K. hospita" are rounded, 5-lobed, thin-walled, membranous capsules, in diameter, loculicidally dehiscent, each locule having 1–2 seeds. The seeds are globose, whitish, warty and exalbuminous. The fruits are more conspicuous than the flowers because of their abundance and size.
Range.
"Kleinhovia"'s range includes Bangladesh, Christmas Island, Peninsular Malaysia, Vietnam, Hainan, Taiwan, the Ryukyu Islands, Caroline Islands, Lesser Sunda Islands, Solomon Islands, Vanuatu, Fiji, Tonga, Samoan Islands, and Society Islands.
It has been introduced to the Comoro Islands, Pakistan, Puerto Rico, Sri Lanka, Thailand, Trinidad and Tobago, and the Windward Islands.
Uses.
"Kleinhovia hospita" is used as a traditional medicine in parts of Peninsular Malaysia, Indonesia and Papua New Guinea to treat scabies. The bark and leaves used as hairwash for lice, while the juice of the leaves are used as an eyewash. Young leaves are eaten as a vegetable. Bast fibres are used for making ropes used for tying or for tethering livestock.
The wood of "K. hospita" shows a pinkish buff and is moderately fine in texture, soft, light, easy to season, work and finish. Its energy value is about 19000 kJ/kg. The leaves and bark contain cyanogenic compounds that are assumed to help to kill ectoparasites such as lice. Extracts of the leaves have shown anti-tumour activity against sarcoma in mice. A number of fatty acids with a cyclopropenylic ring (scopoletin, kaempferol, and quercetin) have been isolated from the leaves.
"Kleinhovia hospita" is used for ornamental purposes: the attractiveness of the pink panicles accounts for its spread as an ornamental.
The tree bark of "Kleinhovia hospita" has a good potential as a reinforcement for "Fiber Reinforced Composite" because of its high mechanical strength.
References.
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