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[[nl:Sesbania tomentosa]]

{{Faboideae-stub}}

Revision as of 20:37, 23 April 2010

ʻŌhai
Scientific classification
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Sesbania tomentosa
Binomial name
Sesbania tomentosa

ʻŌhai (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. It inhabits low shrublands and, rarely, dry forests,[2] at elevations from sea level to 2,500 feet (760 m).[3] Associated native plant species include akiʻaki (Sporobolus virginicus), ilima (Sida fallax), naupaka kahakai (Scaevola sericea), and pili (Heteropogon contortus).[4] Off-road vehicles, wildfires, 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 there are far less on Necker.

ʻŌhai is highly polymorphic, exhibiting broad variations in 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. ʻŌhai grows as a prostrate shrub with semi-glaucous leaves devoid of tomentum on the southernmost tip of the island of Hawaiʻi, Ka Lae.

References

  1. ^ "Sesbania tomentosa". Germplasm Resources Information Network. United States Department of Agriculture. 2007-06-06. Retrieved 2009-02-15.
  2. ^ "ʻOhai" (PDF). State of Hawaiʻi. Retrieved 2009-03-10.
  3. ^ "ohai, ohai". Hawaiian Ethnobotany Online Database. Bernice P. Bishop Museum. Retrieved 2009-03-09.
  4. ^ "Sesbania tomentosa". CPC National Collection Plant Profile. Center for Plant Conservation. Retrieved 2009-03-10.
  • 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. {{cite book}}: |first= has generic name (help); Unknown parameter |coauthors= ignored (|author= suggested) (help)

External links