| 词条 | Calothamnus brevifolius |
| 释义 |
|image = Calothamnus brevifolius.jpg |image_caption = Calothamnus brevifolius in the Charles Gardner Nature Reserve |status = P4 |status_system = DECF |genus = Calothamnus |species = brevifolius |authority = Hawkeswood |synonyms =Melaleuca hawkeswoodii Craven & R.D.Edwards }}Calothamnus brevifolius is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It is a small, highly branched shrub with almost cylindrical, pointed leaves and red flowers in summer. In 2014 Craven, Edwards and Cowley proposed that the species be renamed Melaleuca hawkeswoodii.[1] DescriptionCalothamnus brevifolius is a small, spreading, densely branched, glabrous shrub growing to a height of about {{convert|0.5|m|ft|sigfig=1}} with thick bark on the older stems. Its leaves are mostly crowded on the younger branches, {{convert|7-15|mm|in|sigfig=1}} long, {{convert|0.5-0.8|mm|in|sigfig=1}} wide, linear, almost circular in cross section and tapering to a sharp but not prickly point.[2]The flowers are dark pink and arranged in short dense clusters of 1 to 5 around the stem, usually on the younger branches. The petals are papery and {{convert|5-6|mm|in|sigfig=1}} long. The stamens are arranged in claw-like bundles with 15 to 20 stamens per bundle. Flowering occurs in January and February and is followed by fruits which are woody, roughly cylindrical capsules, {{convert|1.5-2|mm|in|sigfig=1}} wide.[2] Taxonomy and namingCalothamnus brevifolius was first formally described in 1984 by Trevor Hawkeswood from a specimen found on a roadside {{convert|11|km|mi|sigfig=1}} east of Piawaning.[2][3] The specific epithet (brevifolius) is from the Latin brevi meaning "short"[4] and folius meaning "leaf",[5] referring to the characteristically short leaves of this species.[2]Distribution and habitatCalothamnus brevifolius is only known from the Piawaning, Cunderdin, Corrigin and Marchagee districts[2] in the Avon Wheatbelt, Geraldton Sandplains and Mallee biogeographic regions.[6] It usually grows in sand or loamy soil in association with Xylomelum angustifolium, Banksia prionotes, Melaleuca acuminata or Thryptomene prolifera.[2]ConservationCalothamnus brevifolius is listed as "Priority 4" by the Western Australian government Department of Parks and Wildlife[6] meaning that it is rare or near threatened.[7]References1. ^{{cite journal|last1=Craven|first1=Lyn A.|last2=Edwards|first2=Robert D.|last3=Cowley|first3=Kirsten J.|title=New combinations and names in Melaleuca (Myrtaceae)|journal=Taxon|date=30 June 2014|volume=63|issue=3|page=666|doi=10.12705/633.38|url=http://www.ingentaconnect.com/content/iapt/tax/2014/00000063/00000003/art00017|accessdate=23 July 2015}} {{Taxonbar|from1=Q15396941|from2=Q42693881}}2. ^1 2 3 4 5 {{cite journal|last1=Hawkeswood|first1=Trevor J.|title=Nine new species of Calothamnus Labill. (Myrtaceae: Leptospermoideae) from Western Australia|journal=Nuytsia|date=1984|volume=5|issue=1|pages=141–145|url=https://florabase.dpaw.wa.gov.au/science/nuytsia/99.pdf|accessdate=26 July 2015}} 3. ^{{cite web|title=Calothamnus brevifolius|url=https://biodiversity.org.au/boa/instance/apni/527011|publisher=APNI|accessdate=6 June 2015}} 4. ^{{cite web|title=brevi|url=https://en.wiktionary.org/wiki/brevi|publisher=Wiktionary|accessdate=23 July 2015}} 5. ^{{cite web|title=folium|url=https://en.wiktionary.org/wiki/folium|publisher=Wiktionary|accessdate=23 July 2015}} 6. ^1 {{cite web|title=Calothamnus brevifolius|url=https://florabase.dpaw.wa.gov.au/browse/profile/5403|publisher=FloraBase|accessdate=6 June 2015}} 7. ^{{cite web|title=Conservation codes for Western Australian flora and fauna|url=http://www.dpaw.wa.gov.au/images/documents/plants-animals/threatened-species/Listings/conservation_code_definitions.pdf|publisher=Western Australian Government Department of Parks and Wildlife|accessdate=6 June 2015}} 5 : Calothamnus|Myrtales of Australia|Flora of Western Australia|Plants described in 1984|Endemic flora of Western Australia |
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