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Pouteria

Pouteria is a genus of flowering trees in the gutta-percha family, Sapotaceae. The genus is widespread throughout the tropical Americas, with outlier species in Cameroon and Malesia. It includes the green sapote, the mamey sapote, and the abiu. Commonly, this genus is known as pouteria trees.

Range
Pouteria, as currently delineated, has 170 species in the tropical Americas, from Mexico to northern Argentina and central Chile, including Florida and the Caribbean islands. Four species are found outside the Americas. Pouteria hexastemon is native to Cameroon in west-central Africa, and three species are native to IndonesiaPouteria celebica to Sulawesi, Pouteria lucida to Maluku, and Pouteria oxyedra to Sumatra. == Uses ==
Uses
'' Many species, such as Pouteria sapota, have edible fruits and are important foods, seasonally. Some are being commercially collected and sold on local markets or packed in cans. Pouteria species yield hard, heavy, resilient woods used as firewood and timber, but particularly in outdoor and naval construction, such as dock pilings, deckings, etc. Some species, such as abiu (P. caimito), are considered to be shipworm resistant, but this depends on the silica content, which may vary from 0.0-0.9%. The weight by volume (at 12% moisture content) of Pouteria wood can be in excess of 1140 kg/m3 (71 lb/ft3; thus, the wood sinks in water. The wood of Pouteria species is prone to considerable movement and warping when it dries out, but in its main use, naval construction, this is not a problem, since the wood never gets really dry. The vessel elements are relatively small and usually di- to quadriseriate; the medullary rays are fine and close together. Pouteria woods are capable of attaining an excellent polish using fine-grained sandpaper and possibly some wax. They can sometimes show an attractive figure of dark stripes against a sandy to mid-brown background colour. However, the wood is hardly used for furniture because it is so dense that items made from it would be difficult to transport. Moreover, it is nearly impossible to work using hand tools. Even using power tools, working these woods presents some problems, as well, but given some patience and practical knowledge, these can easily be solved. For the silica to be effective against shipworms, it needs to dry to some degree to harden. When the wood is continually waterlogged, this process may take place very slowly or not at all, leaving the wood vulnerable. Pouteria foliage is used as food by some Lepidoptera caterpillars, including those of the dalcerid moth Dalcera abrasa, which has been recorded on P. ramiflora. The fruits are important food for various animals, such as the rock-haunting ringtail possum (Petropseudes dahli). Due to habitat loss and in some cases overexploitation, many species of Pouteria are threatened. At least 10 are close to extinction. == Systematics and taxonomy ==
Systematics and taxonomy
Pouteria is a "wastebasket taxon", and its size is continually being expanded or decreased. The segregated Labatia, described by Olof Swartz in 1788 and named after the French botanist Jean-Baptiste Labat, was maintained as a distinct entity until the 1930s, when it was synonymized with Pouteria. Most segregated genera that were merged with Pouteria again were established by Henri Ernest Baillon and Jean Baptiste Louis Pierre. Recent phylogenetic and morphological studies found Pouteria to be polyphyletic, and many genera previously subsumed into Pouteria and/or Chrysophyllum, including Achrouteria, Chloroluma, Cornuella, Englerella, Labatia, Lucuma, Martiusella, Nemaluma, Peteniodendron, Prieurella, and Ragala, have been reinstated. Accepted species Plants of the World Online currently accepts 170 species. • Barylucuma Ducke (1925) • Caleatia Mart. ex Steud. (1841), pro syn. • Caramuri Aubrév. & Pellegr. (1961) • Chaetocarpus Schreb. (1789), nom. rej. • Discoluma Baill. (1891) • Eremoluma Baill. (1891) • Franchetella Pierre (1890) • Gomphiluma Baill. (1891) • Guapeba Gomes (1812) • Guapebeira Gomes (1803) • Ichthyophora Baehni (1964) • Krugella Pierre (1891) • Leioluma Baill. (1891) • Microluma Baill. (1891) • Myrtiluma Baill. (1891) • Neoxythece Aubrév. & Pellegr. (1961) • Oxythece Miq. (1863), nom. illeg. • Paralabatia Pierre (1890) • Piresodendron Aubrév. ex Le Thomas (1983) • Podoluma Baill. (1891) • Prozetia Neck. (1790), opus utique oppr. • Pseudocladia Pierre (1891) • Pseudolabatia Aubrév. & Pellegr. (1962) • Pseudoxythece Aubrév. (1972) • Sandwithiodoxa Aubrév. & Pellegr. (1962) • Urbanella Pierre (1890) The following genera are sometimes included in Pouteria. • Beccarimnia Pierre ex Koord. • Blabeia Baehni – synonym of PlanchonellaBoerlagella Cogn. - synonym of PlanchonellaBureavella Pierre – synonym of PlanchonellaCalocarpum Pierre – synonym of ManilkaraCalospermum Pierre – synonym of ManilkaraEglerodendron Aubrév. & Pellegr. (1962) – synonym of LabatiaEnglerella Pierre (1891) – accepted genus • Fontbrunea Pierre – synonym of PlanchonellaGayella Pierre (1890) – accepted genus • Hormogyne A.DC. – synonym of PlanchonellaIteiluma Baill. – synonym of PlanchonellaKrausella H.J.Lam – synonym of PlanchonellaLabatia Sw. (1788), nom. cons. – accepted genus • Lucuma Molina (1782) – accepted genus • Malacantha Pierre – accepted genus • Nemaluma Baill. (1891) – accepted genus • Neolabatia Aubrév. (1972), nom. illeg. – synonym of LabatiaPeteniodendron Lundell (1976) – accepted genus • Peuceluma Baill. – synonym of PlanchonellaPlanchonella Pierre - accepted genus • Pleioluma (Baill.) Baehni – accepted genus • Poissonella Pierre – synonym of PlanchonellaPyriluma (Baill.) Aubrév. – synonym of PlanchonellaRadlkoferella Pierre (1890) – synonym of LucumaRichardella Pierre (1890) – synonym of LucumaSersalisia R.Br. - accepted genus • Siderocarpus Pierre – synonym of PlanchonellaSyzygiopsis Ducke (1925) – synonym of MicropholisVan-royena Aubrév. – accepted genus • Woikoia Baehni • Wokoia Baehni – synonym of Pichonia == References ==
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