Argyroxiphium sandwicense
Argyroxiphium sandwicense | |
---|---|
Haleakala silversword (A. sandwicense subsp. macrocephalum) | |
Scientific classification | |
Kingdom: | Plantae |
(unranked): | Angiosperms |
(unranked): | Eudicots |
(unranked): | Asterids |
Order: | Asterales |
Family: | Asteraceae |
Genus: | Argyroxiphium |
Species: | A. sandwicense |
Binomial name | |
Argyroxiphium sandwicense DC. | |
Argyroxiphium sandwicense, the Hawai'i silversword,[1] is a species of silversword. It is endemic to Hawaii. There are two subspecies which are separated by geography.[2] Both subspecies are rare, threatened, and federally protected.
- Haleakala silversword (A. sandwicense subsp. macrocephalum) is found on the mountain Haleakalā on the island of Maui at elevations above 2,100 meters. It is a federally listed threatened species.
- Mauna Kea silversword (A. sandwicense subsp. sandwicense) is found on the mountain Mauna Kea on the Big Island at elevations above 2,600 meters. This is a federally listed endangered species. There may be only 40 wild individuals left.[3]
Recent findings
The Hawai'i silversword flowers only once in its life of 20 to 90 years. It may not survive the ravages of climate change, according to a new study in Global Change Biology.[4]
References
- ↑ "Argyroxiphium sandwicense". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 26 May 2016.
- ↑ Argyroxiphium sandwicense DC., GRIN Taxonomy for Plants
- ↑ The Nature Conservancy
- ↑ http://news.mongabay.com/2013/0506-fitzner-hawaiian-silversword.html
External links
- Media related to Argyroxiphium sandwicense at Wikimedia Commons
This article is issued from Wikipedia - version of the 5/26/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.