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Lasjia
''Lasjia'' is a genus of five known species of trees, constituting part of the plant family Proteaceae.〔〔〔 Three species grow naturally in north–eastern Queensland, Australia and two species in Sulawesi, Indonesia.〔〔〔〔 Descriptively they are the tropical or northern macadamia trees group.〔 ''Lasjia'' species characteristically branched compound inflorescences differentiate them from the ''Macadamia'' species, of Australia, which have characteristically unbranched compound inflorescences and only grow naturally about further to the south, in southern and central eastern Queensland and in north–eastern New South Wales.〔
Bama first Australian peoples in the late 1800s Bellenden Ker Range rainforests (north east Queensland), taught European–Australian scientists of ''L. whelanii'' trees bearing the large seeds "extensively used for food".〔〔 One of those scientists, colonial botanist Frederick M. Bailey collected and in 1889 formally published a scientific description of specimens of them under the name ''Helicia whelanii'' and later again in 1901 as a species of ''Macadamia''. Of these five ''Lasjia'' species, it was the first to receive a European–Australian scientific name.〔〔〔
==Names and classification==
Genetics studies published in 2008 by Austin Mast and colleagues show they have separated from the genus ''Macadamia'', correlating less closely than previously thought from morphological studies. The ancestors of ''Lasjia'' appear to have diverged just under 30 million years ago in the Oligocene epoch from a lineage which has given rise to the Australian genus ''Macadamia'', the South African species ''Brabejum stellatifolium'', Australian rainforest species ''Nothorites megacarpus'' and South American genus ''Panopsis''.〔
The genus name was coined from the initials of Lawrence Alexander Sidney Johnson (L.A.S.J.), who had done much pioneering work on the Proteaceae. The type species is ''Lasjia claudiensis''.〔〔 ''L. claudiensis'' and ''L. grandis'' were only formally scientifically described as recently as 1993 under the genus ''Macadamia'', with botanists making field collections of scientific specimens only since about 1948.〔〔 Genetics studies to date, report ''L. whelanii'' as the earliest offshoot within the genus.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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