Silversword plants of Hawai’i—known by their Hawai’ian name ‘ahinahina which translates to very grey—are unique to the Maui’s Haleakalā volcano summit area and to the Mauna Kea and Mauna Loa volcanoes on the Big Island. Each volcanic mountain has its own unique type of silversword. The Haleakalā species is highly threated and is considered by many to be the most beautiful. But they are growing rarer due to drought, especially at lower elevations on the volcano slopes.
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Source: Phys.org