| 词条 | Melaleuca subtrigona |
| 释义 |
|image = Melaleuca subtrigona (leaves, flowers, fruits).JPG |genus = Melaleuca |species = subtrigona |authority = Schauer }} Melaleuca subtrigona is a plant in the myrtle family, Myrtaceae, and is endemic to the south-west of Western Australia. It is a small shrub with warty leaves and heads of "pom-pom" flowers in spring and early summer. DescriptionMelaleuca subtrigona is a shrub which grows to a height of {{convert|1|m|ft|sigfig=1|abbr=on}} with branches that are covered with fine hairs. Its leaves are arranged alternately, {{convert|2.5-10.5|mm|in|sigfig=1|abbr=on}} long and {{convert|0.7-1.2|mm|in|sigfig=1|abbr=on}} wide. They are covered with fine, silky hairs, are linear to narrow oval shaped, oval in cross section and have distinct, slightly raised oil glands.[1]The flowers are a shade of pink to purple and are arranged in heads on the ends of branches which continue to grow after flowering. The heads contain 2 to 6 groups of flowers in threes and are up to {{convert|16|mm|in|sigfig=1|abbr=on}} in diameter. The stamens are arranged in five bundles around the flowers and each bundle contains 3 to 7 (but mostly 3) stamens. Flowering occurs between August and January and is followed by fruit which are woody capsules {{convert|2.5-4|mm|in|sigfig=1|abbr=on}} long in loose clusters.[1][2] TaxonomyMelaleuca subtrigona was first formally described in 1844 by Johannes Conrad Schauer in Plantae Preissianae.[3][4] The specific epithet (subtrigona) is from the Ancient Greek word trigonos meaning triangular[5]{{rp|814}} and the prefix -sub meaning “under”[5]{{rp|826}} referring to the shape of the leaves as being almost triangular in cross-section.[1]Distribution and habitatMelaleuca sieberi occurs in and between the Brookton, Stirling Range and Ravensthorpe districts[1] in the Avon Wheatbelt, Esperance Plains, Jarrah Forest, Mallee and Swan Coastal Plain biogeographic regions.[6] It grows in sand, clay and laterite on sandplains and hills.[7]ConservationThis species is classified as "not threatened" by the Government of Western Australia Department of Parks and Wildlife.[6] References1. ^1 2 3 {{cite book|last1=Brophy|first1=Joseph J.|last2=Craven|first2=Lyndley A.|last3=Doran|first3=John C.|title=Melaleucas : their botany, essential oils and uses|date=2013|publisher=Australian Centre for International Agricultural Research|page=350|location=Canberra|isbn=9781922137517}} {{Taxonbar|from=Q15371751}}2. ^{{cite book|last1=Holliday|first1=Ivan|title=Melaleucas: a field and garden guide|date=2004|publisher=Reed New Holland Publishers|location=Frenchs Forest, N.S.W.|isbn=1876334983|page=258|edition=2nd}} 3. ^{{cite web|title=Melaleuca subtrigona Schauer|url=https://biodiversity.org.au/boa/instance/apni/544550|publisher=APNI|accessdate=26 April 2015}} 4. ^{{cite book|last1=Lehmann|first1=J.G.C.|title=Plantae Presiiianae|date=1844|page=139|url=https://www.biodiversitylibrary.org/page/498179#page/144/mode/1up|accessdate=26 April 2015}} 5. ^1 {{cite book|last1=Brown|first1=Roland Wilbur|title=The Composition of Scientific Words|date=1956|publisher=Smithsonian Institution Press|location=Washington, D.C.}} 6. ^1 {{cite web|title=Melaleuca subtrigona|url=https://florabase.dpaw.wa.gov.au/browse/profile/5975|publisher=Government of Western Australia department of parks and wildlife|accessdate=26 April 2015}} 7. ^{{cite book|last1=Paczkowska|first1=Grazyna|last2=Chapman|first2=Alex R.|title=The Western Australian flora : a descriptive catalogue|date=2000|publisher=Wildflower Society of Western Australia|location=Perth|isbn=0646402439|page=398}} 4 : Melaleuca|Flora of Western Australia|Plants described in 1844|Endemic flora of Western Australia |
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