| 词条 | Khaya |
| 释义 |
|image = Khaya senegalensis MS 2037.JPG |image_caption = Khaya senegalensis in habitat |taxon = Khaya |authority = A.Juss. |subdivision_ranks = Species |subdivision = See text }}Khaya is a genus of five species of trees in the mahogany family Meliaceae. The timber of Khaya is called African mahogany, and is valued as a substitute to genuine mahogany (of the genus Swietenia).[1] DescriptionThe species are native to tropical Africa and Madagascar. All species grow to around 30–35m tall, rarely 45m, with a trunk over 1m diameter, often buttressed at the base. The leaves are pinnate, with 4-6 pairs of leaflets, the terminal leaflet absent; each leaflet is 10–15 cm long abruptly rounded toward the apex but often with an acuminate tip. The leaves can be either deciduous or evergreen depending on the species. The flowers are produced in loose inflorescences, each flower small, with four or five yellowish petals and ten stamens. The fruit is a globose four or five-valved capsule 5–8 cm diameter, containing numerous winged seeds. Species
UsesThe timber of Khaya is called "African mahogany", with properties generally regarded as the closest to genuine mahogany.[2] Khaya senegalensis, also known as "African dry zone mahogany" or mubaba in the Shona language, is also used for its herbaceous parts. In west Africa, Fulani herdmen prune the tree during the dry season to feed cattle. In addition, the bark of K. senegalensis is often harvested from natural populations as well as plantations and used to treat many diseases. The seeds of K. senegalensis have an oil content of 52.5%, consisting of 21% palmitic acid, 10% stearic acid, 65% oleic acid, and 4% "unidentifiable acid" [3]The durable reddish-brown wood of K. anthotheca is used for dug-out canoes or makoros and as a general beam, door frame and shelving timber which is termite and borer resistant.[4] Some drum companies, as Premier, used khaya wood for making drums in the mid-70s.{{citation needed|date=November 2008}} However, it was too expensive,{{citation needed|date=November 2008}} so they switched to using other materials such as maple and birch.{{citation needed|date=November 2008}} References1. ^[https://www.wood-database.com/african-mahogany/ African Mahogany - The Wood Database] {{Woodworking}}{{Taxonbar|from=Q134051}}2. ^[https://www.wood-database.com/wood-articles/mahogany-mixups-the-lowdown/ Mahogany Mixups: the Lowdown - The Wood Database] 3. ^{{Cite journal |doi = 10.1016/S0960-8524(98)00190-4|title = Fatty acid composition of the seed oil of Khaya senegalensis|journal = Bioresource Technology|volume = 69|issue = 3|pages = 279–280|year = 1999|last1 = Okieimen|first1 = F.E|last2 = Eromosele|first2 = C.O}} 4. ^Joffe, Pitta: (2007), Indigenous Plants of South Africa, Briza Publications, pg 123 2 : Khaya|Meliaceae genera |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。