Sesbania tomentosa: Difference between revisions
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{{Taxobox |
{{Taxobox |
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| name = |
| name = {{okina}}Ohai |
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| status = EN |
| status = EN |
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| binomial_authority = [[William Jackson Hooker|Hook.]] & [[George Arnott Walker Arnott|Arn.]] |
| binomial_authority = [[William Jackson Hooker|Hook.]] & [[George Arnott Walker Arnott|Arn.]] |
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'''{{okina}}Ohai''' ('''''Sesbania tomentosa''''') is an endangered species of [[flowering plant]] in the [[pea]] [[Family (biology)|family]], [[Fabaceae]], that is [[Endemism|endemic]] to the main [[Hawaiian Islands]] as well as [[Nihoa]] and [[Necker Island]]. Off-road vehicles, fires, grazing, and alien species competition have destroyed their habitat on the main islands, but they are still quite common on Nihoa and Necker. At least 2000 specimens grow on Nihoa, while Necker doesn't have nearly as many. |
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{{okina}}Ohai grows from sea level to elevations of {{convert|2700|ft|m}}. Over its wide range of habitats, it exhibits a broad variation of color and shape. Plants that grow on Nihoa have reddish-orange flowers and young leaflets that are relatively hairless. Necker plants have salmon to orange colored-flowers, and leaflets that are very hairy. A form that grows as a standing tree exists on [[Molokai|Moloka{{okina}}i]]. {{okina}}Ohai grows as a prostrate shrub with semi-glaucous leaves devoid of tomentum on the southernmost tip of the [[Hawaii (island)|island of Hawai{{okina}}i]], [[Ka Lae]]. |
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There is a prostrate form from Ka Lae (South Point) on the island of Hawai`i that has smooth leaves almost devoid of tomentum with a semi glaucous sheen. |
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==References== |
==References== |
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Revision as of 04:17, 27 February 2009
| ʻOhai | |
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| File:Sesbania tomentosa.jpg | |
| Sesbania tomentosa | |
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| Species: | S. tomentosa
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| Sesbania tomentosa | |
ʻOhai (Sesbania tomentosa) is an endangered species of flowering plant in the pea family, Fabaceae, that is endemic to the main Hawaiian Islands as well as Nihoa and Necker Island. Off-road vehicles, fires, grazing, and alien species competition have destroyed their habitat on the main islands, but they are still quite common on Nihoa and Necker. At least 2000 specimens grow on Nihoa, while Necker doesn't have nearly as many.
ʻOhai grows from sea level to elevations of 2,700 feet (820 m). Over its wide range of habitats, it exhibits a broad variation of color and shape. Plants that grow on Nihoa have reddish-orange flowers and young leaflets that are relatively hairless. Necker plants have salmon to orange colored-flowers, and leaflets that are very hairy. A form that grows as a standing tree exists on Molokaʻi. ʻOhai grows as a prostrate shrub with semi-glaucous leaves devoid of tomentum on the southernmost tip of the island of Hawaiʻi, Ka Lae.
References
- ^ "Sesbania tomentosa". Germplasm Resources Information Network. United States Department of Agriculture. 2007-06-06. Retrieved 2009-02-15.
- Evenhuis, Neal L. (ed.) (2004). Natural History of Nihoa and Necker Islands. Bishop Museum Bulletin in Cultural and Environmental Studies; No. 1. Honolulu, Hawaii: Bishop Museum Press. ISBN 1-58178-029-X.
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