Isotoma petraea: Difference between revisions
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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> |
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==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> |
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==Distribution and habitat== |
==Distribution and habitat== |
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Revision as of 08:16, 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.[3]
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.[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]
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.[2]
References
- ^ "Isotoma petraea". Australian Plant Census. Retrieved 11 April 2020.
- ^ a b "Isotoma petraea". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
- ^ Wiecek, B. "PlantNET - FloraOnline". plantnet.rbgsyd.nsw.gov.au. Retrieved 14 December 2018.
- ^ "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.
- ^ "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.