Isotoma petraea: Difference between revisions
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'''''Isotoma petraea''''', commonly known as '''rock isotome''',<ref name=FloraBase>{{FloraBase|name=Isotoma petraea|id=7397}}</ref> is a small, herbaceous plant in the family ''[[Campanulaceae]]'' occurring in arid regions of Australia. It has single, purplish-blue flowers on smooth, slender branches from February to November. |
'''''Isotoma petraea''''', commonly known as '''rock isotome''',<ref name=FloraBase>{{FloraBase|name=Isotoma petraea|id=7397}}</ref> is a small, herbaceous plant in the family ''[[Campanulaceae]]'' occurring in arid regions of Australia. It has single, purplish-blue flowers on smooth, slender branches from February to November. |
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==Description== |
==Description== |
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''Isotoma petraea'' is an erect, spreading, perennial or annual herbaceous plant with smooth branches that typically grows to a height of {{convert|0.2|to|0.6|m|ft|1}}. The smooth leaves are narrowly egg-shaped to elliptic, {{cvt|3-7.5|cm}} long, {{cvt|1-3.5|cm}} wide, [[petiole (botany)|petiolate]] on lower sections [[sessile (botany)|sessile]] toward the branch apex, sharply lobed, unevenly spaced teeth and ending in a point. The blue-purplish flowers are borne singly on a wiry [[peduncle (botany)|peduncle]] {{cvt|8-25|cm}} long. The [[calyx (botany)|calyces]] are narrow-triangular, pointed, {{cvt|5-12|mm}} long, [[corolla (botany)|corolla]] is mostly white and may have a flush of purplish-blue, a light green floral tube {{cvt|14-20|mm}} long with prominent veins. The smooth petals are lance-oblong shaped {{cvt|9-12|mm}} long and tapering sharply to a point. The fruit are rounded, slightly ribbed and {{cvt|12-22|mm}} long. Flowering occurs mostly in summer.<ref name="EFLORA">{{cite web |title=''Isotoma petraea'' |url=http://www.flora.sa.gov.au/cgi-bin/speciesfacts_display.cgi?form=speciesfacts&name=Isotoma_petraea |website=eFloraSA |publisher=State Herbarium of South Australia |accessdate=11 April 2020}}</ref><ref name="FAGG">{{cite book |last1=Wrigley |first1=John W. |last2=Fagg |first2=Murray |title=Australian Native Plants |date=2001 |publisher=Louise Eggerton-Reed New Holland |isbn=1876334304 |page=591}}</ref> |
''Isotoma petraea'' is an erect, spreading, perennial or annual herbaceous plant with smooth branches that typically grows to a height of {{convert|0.2|to|0.6|m|ft|1}}. The smooth leaves are narrowly egg-shaped to elliptic, {{cvt|3-7.5|cm}} long, {{cvt|1-3.5|cm}} wide, [[petiole (botany)|petiolate]] on lower sections [[sessile (botany)|sessile]] toward the branch apex, sharply lobed, unevenly spaced teeth and ending in a point. The blue-purplish flowers are borne singly on a wiry [[peduncle (botany)|peduncle]] {{cvt|8-25|cm}} long. The [[calyx (botany)|calyces]] are narrow-triangular, pointed, {{cvt|5-12|mm}} long, [[corolla (botany)|corolla]] is mostly white and may have a flush of purplish-blue, a light green floral tube {{cvt|14-20|mm}} long with prominent veins. The smooth petals are lance-oblong shaped {{cvt|9-12|mm}} long and tapering sharply to a point. The fruit are rounded, slightly ribbed and {{cvt|12-22|mm}} long. Flowering occurs mostly in summer.<ref name="EFLORA">{{cite web |title=''Isotoma petraea'' |url=http://www.flora.sa.gov.au/cgi-bin/speciesfacts_display.cgi?form=speciesfacts&name=Isotoma_petraea |website=eFloraSA |publisher=State Herbarium of South Australia |accessdate=11 April 2020}}</ref><ref name="FAGG">{{cite book |last1=Wrigley |first1=John W. |last2=Fagg |first2=Murray |title=Australian Native Plants |date=2001 |publisher=Louise Eggerton-Reed New Holland |isbn=1876334304 |page=591}}</ref><ref name="PlantNET">{{cite web |last1=Wiecek |first1=B. |title=PlantNET - FloraOnline |url=http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Isotoma~petraea |website=plantnet.rbgsyd.nsw.gov.au |accessdate=14 December 2018}}</ref> |
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==Taxonomy and naming== |
==Taxonomy and naming== |
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This species was first formally described in 1853 by [[Ferdinand von Mueller]] and the description was published in ''Linnaea: ein Journal für die Botanik in ihrem ganzen Umfange, oder Beiträge zur Pflanzenkunde''.<ref name="ISOTOMA">{{cite journal |title=Diagnoses et descriptiones plantarum novarum, quas in Nova Hollandia |journal=Linnaea: ein Journal für die Botanik in ihrem ganzen Umfange, oder Beiträge zur Pflanzenkunde |date=1853 |url=https://www.biodiversitylibrary.org/item/109556#page/426/mode/1up |accessdate=14 April 2020}}</ref><ref name="APNI">{{cite web |title=''Isotoma petraea'' |url=https://biodiversity.org.au/nsl/services/rest/instance/apni/530181 |website=Australian Plant Name Index |accessdate=14 April 2020}}</ref> |
This species was first formally described in 1853 by [[Ferdinand von Mueller]] and the description was published in ''Linnaea: ein Journal für die Botanik in ihrem ganzen Umfange, oder Beiträge zur Pflanzenkunde''.<ref name="ISOTOMA">{{cite journal |title=Diagnoses et descriptiones plantarum novarum, quas in Nova Hollandia |journal=Linnaea: ein Journal für die Botanik in ihrem ganzen Umfange, oder Beiträge zur Pflanzenkunde |date=1853 |url=https://www.biodiversitylibrary.org/item/109556#page/426/mode/1up |accessdate=14 April 2020}}</ref><ref name="APNI">{{cite web |title=''Isotoma petraea'' |url=https://biodiversity.org.au/nsl/services/rest/instance/apni/530181 |website=Australian Plant Name Index |accessdate=14 April 2020}}</ref>The [[botanical name|specific epithet]] (''petraea'') is derived from the [[Latin]] ''petraeus'' meaning "growing amongst rocks".<ref name="Sharr">{{cite book |author=[[Francis Aubie Sharr]]|title=Western Australian Plant Names and their Meanings |date=2019 |publisher=Four Gables Press |location=Kardinya, Western Australia |isbn=9780958034180 |page=275}}</ref> |
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==Distribution and habitat== |
==Distribution and habitat== |
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It is found on breakways, among rocky outcrops and in rock crevices in the [[Mid West (Western Australia)|Mid West]], [[Wheatbelt (Western Australia)|Wheatbelt]] and [[Goldfields-Esperance]] regions of Western Australia where it grows in shallow sandy soils over [[granite]].<ref name=FloraBase/> |
It is found on breakways, among rocky outcrops and in rock crevices in the [[Mid West (Western Australia)|Mid West]], [[Wheatbelt (Western Australia)|Wheatbelt]] and [[Goldfields-Esperance]] regions of Western Australia where it grows in shallow sandy soils over [[granite]].In [[New South Wales]] it grows west of [[Wilcannia]] mostly on slopes and rocky locations on shallow granite based soils. In [[South Australia]] it is a widespread species growing in rocky locations. <ref name=FloraBase/><ref name="EFLORA"/><ref name="PlantNET">{{cite web |last1=Wiecek |first1=B. |title=PlantNET - FloraOnline |url=http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Isotoma~petraea |website=plantnet.rbgsyd.nsw.gov.au |accessdate=14 December 2018}}</ref> |
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==References== |
==References== |
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{{Reflist}} |
{{Reflist}} |
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Revision as of 09:03, 14 April 2020
| Rock isotome | |
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Scientific classification 
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| Ambiguous taxon: | [[Wikipedia:Automated taxobox system/taxonomy templates#Title conventions|Do not use this template Please use [[Template:Taxonomy/{{{name}}} (plant)|{{{name}}} (plant)]] or [[Template:Taxonomy/{{{name}}} (springtail)|{{{name}}} (springtail)]]]] |
| Species: | I. petraea
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| Binomial name | |
| Isotoma petraea | |
Isotoma petraea, commonly known as rock isotome,[2] is a small, herbaceous plant in the family Campanulaceae occurring in arid regions of Australia. It has single, purplish-blue flowers on smooth, slender branches from February to November.
Description
Isotoma petraea is an erect, spreading, perennial or annual herbaceous plant with smooth branches that typically grows to a height of 0.2 to 0.6 metres (0.7 to 2.0 ft). The smooth leaves are narrowly egg-shaped to elliptic, 3–7.5 cm (1.2–3.0 in) long, 1–3.5 cm (0.39–1.38 in) wide, petiolate on lower sections sessile toward the branch apex, sharply lobed, unevenly spaced teeth and ending in a point. The blue-purplish flowers are borne singly on a wiry peduncle 8–25 cm (3.1–9.8 in) long. The calyces are narrow-triangular, pointed, 5–12 mm (0.20–0.47 in) long, corolla is mostly white and may have a flush of purplish-blue, a light green floral tube 14–20 mm (0.55–0.79 in) long with prominent veins. The smooth petals are lance-oblong shaped 9–12 mm (0.35–0.47 in) long and tapering sharply to a point. The fruit are rounded, slightly ribbed and 12–22 mm (0.47–0.87 in) long. Flowering occurs mostly in summer.[3][4][5]
Taxonomy and naming
This species was first formally described in 1853 by Ferdinand von Mueller and the description was published in Linnaea: ein Journal für die Botanik in ihrem ganzen Umfange, oder Beiträge zur Pflanzenkunde.[6][7]The specific epithet (petraea) is derived from the Latin petraeus meaning "growing amongst rocks".[8]
Distribution and habitat
It is found on breakways, among rocky outcrops and in rock crevices in the Mid West, Wheatbelt and Goldfields-Esperance regions of Western Australia where it grows in shallow sandy soils over granite.In New South Wales it grows west of Wilcannia mostly on slopes and rocky locations on shallow granite based soils. In South Australia it is a widespread species growing in rocky locations. [2][3][5]
References
- ^ "Isotoma petraea". Australian Plant Census. Retrieved 11 April 2020.
- ^ a b "Isotoma petraea". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
- ^ a b "Isotoma petraea". eFloraSA. State Herbarium of South Australia. Retrieved 11 April 2020.
- ^ Wrigley, John W.; Fagg, Murray (2001). Australian Native Plants. Louise Eggerton-Reed New Holland. p. 591. ISBN 1876334304.
- ^ a b Wiecek, B. "PlantNET - FloraOnline". plantnet.rbgsyd.nsw.gov.au. Retrieved 14 December 2018.
- ^ "Diagnoses et descriptiones plantarum novarum, quas in Nova Hollandia". Linnaea: ein Journal für die Botanik in ihrem ganzen Umfange, oder Beiträge zur Pflanzenkunde. 1853. Retrieved 14 April 2020.
- ^ "Isotoma petraea". Australian Plant Name Index. Retrieved 14 April 2020.
- ^ Francis Aubie Sharr (2019). Western Australian Plant Names and their Meanings. Kardinya, Western Australia: Four Gables Press. p. 275. ISBN 9780958034180.