The Silversword is a very unique plant, only found in Hawaii.
The Hawaiian silversword is an indigenous plant consisting of a rosette of narrow, pointed (swordlike) leaves densely covered by silver hairs that form a sphere. At some point during its life it sends up a spectacular flowering stalk that can reach six feet in height. Each stalk can produce hundreds of maroon sunflowerlike flower heads.
The Haleakala silversword is found in the crater and outer slopes of Haleakala Volcano above the 6,890-ft elevation. The silversword flowers only once, at the end of its lifetime (15-50 years), produces seeds and then dies.
The Mauna Kea silversword found on the slopes of Mauna Kea on the Big Island of Hawaii tends to differ from the Haleakala silversword in having a longer, narrower flowering stalk, fewer ray flowers, and longer, narrower, and straighter leaves.