Utilizing monotone applied science , researchers from the National Tropical Botanical Garden ( NTBG ) on Kauai late rediscover a aboriginal Hawaiian flora that was thought to be out .
The plant , called Hibiscadelphus woodii , was rediscover in a small dependency of three individuals growing on a upright cliff face in a remote part of Kauai ’s Kalalau Valley . The drop area is known as a biodiversity hotspot in the Hawaiian Islands where most sections are inaccessible to man as well as goats that otherwise pose a threat .
The rediscovery of H. woodii , listed on the IUCN Red List of Threatened Species as an out relative of hibiscus , provides a striking exemplar of the get importance of lagger in preservation work . H. woodii , known only from the island of Kauai , was last seen live in 2009 , run scientists to recognize the plant life as nonextant .

Hibiscadelphus woodii was discovered by NTBG phytologist in 1991 , growing on a sheer cliff in Kauai ’s Kalalau Valley . The new species was formally named and print in 1995 . At the time , the discovery increased the number of Hibiscadelphus to seven species , which are all limited to the Hawaiian Islands . An 8th species , H. stellatus , was discovered on Maui in 2012 . Previous to this rediscovery , six Hibiscadelphus species were recognized as nonextant in the wilderness . The other two coinage with wild survivors are H. distans on Kauai and H. stellatus on Maui .
Hibiscadelphus woodii grow as a shrub or belittled tree and produces bright yellow-bellied flowers which turn purplish - maroon as they senesce . The ambrosia - rich bloom are likely pollenate by native Hawaiian honeycreeper Bronx cheer admit the amakihi .
cause to propagate H. woodii utilize several methods have fail , include grafting , bakshish cuttings , and attempts at cross pollination .
Like other endangered aboriginal Hawaiian species , H. woodii confront threats from trespassing flora , introduced creature , and rock slides . In the former 1990s fall boulders badly touch the known colony and run to their dying .
The rediscovery of H. woodii declare oneself new promise that other ‘ thought - to - be - extinct ’ coinage may still live in hard to access areas . NTBG ’s Director of Science and Conservation Dr. David Lorence said , “ This unbelievable rediscovery was made possible by our staff using drone applied science and was supported by a Cary Grant from the Mohamed bin Zayed Species Conservation Fund . monotone technology greatly facilitates botanic surveys in rough terrain areas . ”
Ben Nyberg , GIS Coordinator and drone specialist for NTBG tot up , “ Drones are unlocking a treasure treasure trove of unexplored cliff habitat , and while this may be the first uncovering of its kind , I am sure it wo n’t be the last . ”
For more information : National Tropical Botanical Gardenntbg.org