| 词条 | Verticordia staminosa |
| 释义 |
|image = Verticordia staminosa subsp. cylindracea var. erecta.jpg |image_caption = V. staminosa subsp. cylindracea var. erecta leaves and flowers |status = R |status_system = DECF |genus = Verticordia |display_parents = 2 |parent = Verticordia sect. Synandra |species = staminosa |authority = C.A.Gardner & A.S.George }} Verticordia staminosa is a flowering plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It is a shrub comprising two subspecies, one of which has two varieties. All three types have a limited distribution and have been classified as "Threatened". It is distinguished from other species of verticordia by its prominent, long stamens which extend well beyond its feathery yellow sepals and petals. DescriptionVerticordia staminosa is a shrub which sometimes grows to a height of {{convert|20-60|cm|in|sigfig=1|abbr=on}} or {{convert|30-100|cm|in|sigfig=1|abbr=on}} depending on subspecies. The branches are bristly and the leaves are linear to cylindrical in shape, glabrous and {{convert|7-14|mm|in|sigfig=1|abbr=on}} long.[1]The flowers are arranged in the upper leaf axils on a stalk {{convert|4-6|mm|in|sigfig=1|abbr=on}} long. The floral cup is hemispherical, about {{convert|2|mm|in|sigfig=1|abbr=on}} long, warty but glabrous. The sepals are feathery, spreading, {{convert|5-7|mm|in|sigfig=1|abbr=on}} long, lemon-yellow at first but later turn reddish. The petals are about the same colour and length as the sepals but erect and divided into feathery, finger-like lobes. The stamens and staminodes are joined to form a tube at their lower end and the stamens are {{convert|6-12|mm|in|sigfig=1|abbr=on}} long alternating with much shorter staminodes. The style is {{convert|7-12|mm|in|sigfig=2|abbr=on}} long, straight and glabrous. Flowering time is usually from July to October.[1] Taxonomy and namingVerticordia staminosa was first formally described by Charles Gardner and Alex George in 1963 from a specimen collected near Wongan Hills by Harry Butler and the description was published in the Journal of the Royal Society of Western Australia.[2] The specific epithet (staminosa) refers to the prominent stamens.[1]When Alex George reviewed the genus Verticordia in 1991, he placed this species in Subgenus Chrysoma, the only species in Section Synandra.[3] George described three forms of this species:
Distribution and habitatVerticordia staminosa grows in soil in crevices on exposed granite outcrops. Subspecies staminosa is only known from a single locality in the Wongan Hills,[7] variety cylindracea between Newdegate and Pingaring[8] and variety erecta in a small area north-west of Newdegate.[1][9]Verticordia staminosa is commonly known as Wongan verticordia and is only known from about 1200 plants. Relatively large numbers of seedling establish each year and its rarity is thought to be a result of climate change and increased frequency of fire.[10]ConservationAll three forms of V. staminosa are classified as "Threatened" by the Western Australian Government Department of Parks and Wildlife,[7][8][9] meaning that it they are in danger of extinction.[11] Use in horticultureVerticordia staminosa can be readily propagated from cuttings these are initially often slow-growing in their first year in the garden.[1]References1. ^1 2 3 4 {{cite book |author1=Elizabeth A. (Berndt) George |author2=Margaret Pieroni (illustrator) |title= Verticordia: the turner of hearts|edition= 1st |year=2002 |publisher=University of Western Australia Press |location=Crawley, Western Australia |isbn=1-876268-46-8 |pages= 172–177}} {{Taxonbar|from=Q7922931}}2. ^{{cite web|title=Verticordia staminosa|url= https://id.biodiversity.org.au/instance/apni/531346|publisher=APNI|accessdate=7 September 2016}} 3. ^{{cite journal|last1=George|first1=Alex|title=New taxa, combinations and typifications in Verticordia (Myrtaceae : Chamelaucieae)|journal=Nuytsia|date=1991|volume=7|issue=3|pages=231–394}} 4. ^{{cite web|title=Verticordia staminosa subsp. staminosa|url= https://id.biodiversity.org.au/instance/apni/552551|publisher=APNI|accessdate=7 September 2016}} 5. ^{{cite web|title=Verticordia staminosa var. cylindracea|url= https://id.biodiversity.org.au/instance/apni/552549|publisher=APNI|accessdate=7 September 2016}} 6. ^{{cite web|title=Verticordia staminosa var. erecta|url= https://id.biodiversity.org.au/instance/apni/552550|publisher=APNI|accessdate=7 September 2016}} 7. ^1 {{FloraBase|name=Verticordia staminosa subsp. staminosa|id=15614}} 8. ^1 {{FloraBase|name=Verticordia staminosa var. erecta|id=12464}} 9. ^1 {{FloraBase|name=Verticordia staminosa var. cylindracea|id=12463}} 10. ^{{cite journal|last1=Yates|first1=Colin J.|last2=Ladd|first2=Philip G.|last3=Coates|first3=David J.|last4=McArthur|first4=Shelley|title=Hierarchies of cause: understanding rarity in an endemic shrub Verticordia staminosa (Myrtaceae) with a highly restricted distribution|journal=Australian Journal of Botany|date=2007|volume=55|issue=3|pages=194|doi=10.1071/BT06032}} 11. ^{{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=Government of Western Australia Department of Parks and Wildlife|accessdate=7 September 2016}} 5 : Verticordia|Rosids of Western Australia|Eudicots of Western Australia|Plants described in 1963|Flora of Western Australia |
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