Sedum album: Difference between revisions
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'''''Sedum album''''' or '''white stonecrop''', is a [[flowering plant]] of the genus ''[[Sedum]]'' in the family [[Crassulaceae]]. It is found in the [[temperate climate|northern temperate]] regions of the world, often growing in crevices or free-draining rocky soil. As a [[long-day plant]] it grows [[wikt:vegetatively|vegetatively]] for most of the year and flowers in June and July. |
'''''Sedum album''''' or '''white stonecrop''', is a [[flowering plant]] of the genus ''[[Sedum]]'' in the family [[Crassulaceae]]. It is found in the [[temperate climate|northern temperate]] regions of the world, often growing in crevices or free-draining rocky soil. As a [[long-day plant]] it grows [[wikt:vegetatively|vegetatively]] for most of the year and flowers in June and July. |
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<ref name=acclimation>{{cite journal|last=Castillo|first=F J|date=9 December 2004|title=Antioxidative protection in the inducible CAM plant Sedum album L. following the imposition of severe water stress and recovery|journal=Oecologia|publisher=Springer Berlin / Heidelberg|volume=107|issue=4|pages=469–477 |
<ref name=acclimation>{{cite journal|last=Castillo|first=F J|date=9 December 2004|title=Antioxidative protection in the inducible CAM plant ''Sedum album'' L. following the imposition of severe water stress and recovery|journal=Oecologia|publisher=Springer Berlin / Heidelberg|volume=107 |issue=4 |pages=469–477 |doi = 10.1007/BF00333937 |url=http://www.springerlink.com/content/p6v3847638203721/ |accessdate=30 June 2009}}</ref> |
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== Taxonomy == |
== Taxonomy == |
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Three subspecies ''album'', ''micranthum'' (Bastard ex DC.) Syme and ''teretifolium'' Syme have been described. |
Three subspecies ''album'', ''micranthum'' (Bastard ex DC.) Syme and ''teretifolium'' Syme have been described. |
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<ref>[http://www.nhm.ac.uk/research-curation/scientific-resources/biodiversity/uk-biodiversity/uk-species/species/sedum_album_subsp._album.html Natural History Museum: Sedum album subsp. album]</ref><ref>[http://www.tela-botanica.org/bdtfx-nn-62143?referentiel=bdtfx&niveau=2&module=fiche&action=fiche&num_nom=62141&type_nom=nom_scientifique&nom=sedum%20album Tela Botanica. Sedum album ]</ref><ref name=MBG/> |
<ref>[http://www.nhm.ac.uk/research-curation/scientific-resources/biodiversity/uk-biodiversity/uk-species/species/sedum_album_subsp._album.html Natural History Museum: ''Sedum album'' subsp. ''album'']</ref><ref>[http://www.tela-botanica.org/bdtfx-nn-62143?referentiel=bdtfx&niveau=2&module=fiche&action=fiche&num_nom=62141&type_nom=nom_scientifique&nom=sedum%20album Tela Botanica. ''Sedum album'' ]</ref><ref name=MBG/> |
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==Description== |
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White stonecrop is a tufted perennial herb that forms mat-like stands. Much of the year the stems are short, semi prostrate and densely clad in leaves. At the flowering time in July and August, the stems lengthen and are erect, occasionally branched and often pinkish-brown. The leaves are alternate, fleshy and nearly cylindrical with a blunt, rounded tip. They are also sometimes tinged with pink, especially in drought-stressed plants. The starry flowers form a dense [[Cyme (botany)|cyme]]. The calyx has five fleshy sepals fused at the base, the corolla consists of five regular white petals, there are ten stamens, a separate gynoecium and five pistils. The fruit is five united, many-seeded [[Follicle (fruit)|follicles]].<ref name=NatureGate>{{cite web |url=http://www.luontoportti.com/suomi/en/kukkakasvit/white-stonecrop |title=White stonecrop: ''Sedum album'' |publisher=NatureGate |accessdate=29 December 2013}}</ref> |
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==Habitat== |
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White stonecrop is a low-growing plant that cannot compete with more vigorous fast-growing species. It is specially adapted for growing on thin dry soils and can be found on walls, dry banks, seashore rocks and in rocky meadows.<ref name=NatureGate/> |
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==Physiology== |
==Physiology== |
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== Cultivation == |
== Cultivation == |
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Hardy |
Hardy in Zones 3-9.<ref name=MBG>[http://www.missouribotanicalgarden.org/gardens-gardening/your-garden/plant-finder/plant-details/kc/b885/sedum-album-subsp.-teretifolium-murale.aspx Missouri Botanical Garden: Sedum album subsp. teretifolium 'Murale' ]</ref> |
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<gallery> |
<gallery> |
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File:Sedum_acclimation2.JPG|The plant on the left is relatively drought stressed and the right is well watered |
File:Sedum_acclimation2.JPG|The plant on the left is relatively drought stressed and the one on the right is well watered |
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</gallery> |
</gallery> |
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[[Category:Flora of Lebanon]] |
[[Category:Flora of Lebanon]] |
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[[Category:Plants described in 1753]] |
[[Category:Plants described in 1753]] |
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{{Crassulaceae-stub}} |
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Revision as of 20:28, 29 December 2013
| Sedum album | |
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| Species: | S. album
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| Binomial name | |
| Sedum album | |
Sedum album or white stonecrop, is a flowering plant of the genus Sedum in the family Crassulaceae. It is found in the northern temperate regions of the world, often growing in crevices or free-draining rocky soil. As a long-day plant it grows vegetatively for most of the year and flowers in June and July. [1]
Taxonomy
Three subspecies album, micranthum (Bastard ex DC.) Syme and teretifolium Syme have been described. [2][3][4]
Description
White stonecrop is a tufted perennial herb that forms mat-like stands. Much of the year the stems are short, semi prostrate and densely clad in leaves. At the flowering time in July and August, the stems lengthen and are erect, occasionally branched and often pinkish-brown. The leaves are alternate, fleshy and nearly cylindrical with a blunt, rounded tip. They are also sometimes tinged with pink, especially in drought-stressed plants. The starry flowers form a dense cyme. The calyx has five fleshy sepals fused at the base, the corolla consists of five regular white petals, there are ten stamens, a separate gynoecium and five pistils. The fruit is five united, many-seeded follicles.[5]
Habitat
White stonecrop is a low-growing plant that cannot compete with more vigorous fast-growing species. It is specially adapted for growing on thin dry soils and can be found on walls, dry banks, seashore rocks and in rocky meadows.[5]
Physiology
Sedum album is able to acclimate to its environment. It can switch between C3 carbon fixation and crassulacean acid metabolism (CAM) depending on the availability of water. CAM saves water as the stomata on its leaves only open to allow CO2 to diffuse into the leaves at night when the temperature (and therefore evapotranspiration) is lower.[6] Drought stressed plants are also more susceptible to photoinhibition which CAM may help to protect against.[1]
Cultivation
Hardy in Zones 3-9.[4]
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The plant on the left is relatively drought stressed and the one on the right is well watered
References
- ^ a b Castillo, F J (9 December 2004). "Antioxidative protection in the inducible CAM plant Sedum album L. following the imposition of severe water stress and recovery". Oecologia. 107 (4). Springer Berlin / Heidelberg: 469–477. doi:10.1007/BF00333937. Retrieved 30 June 2009.
- ^ Natural History Museum: Sedum album subsp. album
- ^ Tela Botanica. Sedum album
- ^ a b Missouri Botanical Garden: Sedum album subsp. teretifolium 'Murale'
- ^ a b "White stonecrop: Sedum album". NatureGate. Retrieved 29 December 2013.
- ^ Attention: This template ({{cite doi}}) is deprecated. To cite the publication identified by doi:10.1007/BF00790018, please use {{cite journal}} (if it was published in a bona fide academic journal, otherwise {{cite report}} with
|doi=10.1007/BF00790018instead.
