Olearia mucronata: Difference between revisions
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==Description== |
==Description== |
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''Olearia mucronata'' is a densely-branched, unpleasantly aromatic shrub that typically grows up to {{cvt|1|m}}, its stems and leaves with a few [[Gland (botany)|glandular]] hairs. The leaves are arranged alternately, crowded along the branchlets, linear, mostly {{cvt|13–46|mm}} long and {{cvt|1–5|mm}} wide with a small point on the tip. Both sides of the leaves are dark green with a few glandular hairs. The heads or daisy-like [[Pseudanthium|"flowers"]] are arranged singly on the ends of branches on a [[Peduncle (botany)|peduncle]] up to {{cvt|23|mm}} long with a bell-shaped [[Involucral bract|involucre]] at the base. Each head has nine to twelve white ray [[Glossary of botanical terms#floret |florets]], the [[ligule]] {{cvt|5.4–14|mm}} long, surrounding 39 to 45 yellow disc florets. Flowering occurs from August to January and the fruit is a slightly flattened [[achene]], the [[Pappus (botany)|pappus]] with 19 to 27 bristles.<ref name="Nuytsia">{{cite journal |last1=Lander |first1=Nicholas S. |title=New species of ''Olearia'' (Asteraceae: Astereae) endemic to Western Australia. |journal=Nuytsia |date=1990 |volume=7 |issue=2 |pages=151–153 |url=https://www.biodiversitylibrary.org/item/233144#page/41/mode/1up |access-date=31 May 2022}}</ref><ref name="FloraBase">{{FloraBase|name=''Olearia mucronata'' |id=12638}}</ref> |
''Olearia mucronata'' is a densely-branched, unpleasantly aromatic shrub that typically grows up to {{cvt|1|m}} high, its stems and leaves with a few [[Gland (botany)|glandular]] hairs. The leaves are arranged alternately, crowded along the branchlets, linear, mostly {{cvt|13–46|mm}} long and {{cvt|1–5|mm}} wide with a small point on the tip. Both sides of the leaves are dark green with a few glandular hairs. The heads or daisy-like [[Pseudanthium|"flowers"]] are arranged singly on the ends of branches on a [[Peduncle (botany)|peduncle]] up to {{cvt|23|mm}} long with a bell-shaped [[Involucral bract|involucre]] at the base. Each head has nine to twelve white ray [[Glossary of botanical terms#floret |florets]], the [[ligule]] {{cvt|5.4–14|mm}} long, surrounding 39 to 45 yellow disc florets. Flowering occurs from August to January and the fruit is a slightly flattened [[achene]], the [[Pappus (botany)|pappus]] with 19 to 27 bristles.<ref name="Nuytsia">{{cite journal |last1=Lander |first1=Nicholas S. |title=New species of ''Olearia'' (Asteraceae: Astereae) endemic to Western Australia. |journal=Nuytsia |date=1990 |volume=7 |issue=2 |pages=151–153 |url=https://www.biodiversitylibrary.org/item/233144#page/41/mode/1up |access-date=31 May 2022}}</ref><ref name="FloraBase">{{FloraBase|name=''Olearia mucronata'' |id=12638}}</ref> |
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==Taxonomy== |
==Taxonomy== |
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==Distribution and habitat== |
==Distribution and habitat== |
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This daisy bush grows on [[Schist|schistose]] hills in the [[Murchison bioregion|Muchison]] and [[Pilbara shrublands|Pilbara]]bioregions of inland Western Australia.<ref name="Nuytsia" /><ref name="FloraBase" /> |
This daisy bush grows on [[Schist|schistose]] hills in the [[Murchison bioregion|Muchison]] and [[Pilbara shrublands|Pilbara]] bioregions of inland Western Australia.<ref name="Nuytsia" /><ref name="FloraBase" /> |
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==Conservation status== |
==Conservation status== |
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Latest revision as of 21:53, 17 June 2022
| Olearia mucronata | |
|---|---|
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Olearia |
| Species: | O. mucronata
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| Binomial name | |
| Olearia mucronata | |
Olearia mucronata is a species of flowering plant in the family Asteraceae and is endemic to inland areas of Western Australia. It is a densely-branched, unpleasantly aromatic shrub with crowded linear leaves, and white and yellow, daisy-like inflorescences.
Description
[edit]Olearia mucronata is a densely-branched, unpleasantly aromatic shrub that typically grows up to 1 m (3 ft 3 in) high, its stems and leaves with a few glandular hairs. The leaves are arranged alternately, crowded along the branchlets, linear, mostly 13–46 mm (0.51–1.81 in) long and 1–5 mm (0.039–0.197 in) wide with a small point on the tip. Both sides of the leaves are dark green with a few glandular hairs. The heads or daisy-like "flowers" are arranged singly on the ends of branches on a peduncle up to 23 mm (0.91 in) long with a bell-shaped involucre at the base. Each head has nine to twelve white ray florets, the ligule 5.4–14 mm (0.21–0.55 in) long, surrounding 39 to 45 yellow disc florets. Flowering occurs from August to January and the fruit is a slightly flattened achene, the pappus with 19 to 27 bristles.[2][3]
Taxonomy
[edit]Olearia mucronata was first formally described in 1990 by Nicholas Sèan Lander in the journal Nuytsia from specimens collected in the Wittenoom area in 1972.[2][4] The specific epithet (mucronata) refers to the muconate leaves.[5]
Distribution and habitat
[edit]This daisy bush grows on schistose hills in the Muchison and Pilbara bioregions of inland Western Australia.[2][3]
Conservation status
[edit]Olearia mucronata is listed as "Priority Three" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions,[3] meaning that it is poorly known and known from only a few locations but is not under imminent threat.[6]
References
[edit]- ^ "Olearia mucronata". Australian Plant Census. Retrieved 31 May 2022.
- ^ a b c Lander, Nicholas S. (1990). "New species of Olearia (Asteraceae: Astereae) endemic to Western Australia". Nuytsia. 7 (2): 151–153. Retrieved 31 May 2022.
- ^ a b c "Olearia mucronata". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
- ^ "Olearia mucronata". APNI. Retrieved 31 May 2022.
- ^ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 256. ISBN 9780958034180.
- ^ "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 31 May 2022.