KAJ R. SVENSSON / SCIENCE PHOTO LIBRARY KAJ R. SVENSSON / SCIENCE PHOTO LIBRARY
Haleakala silversword (Argyroxiphium sandwicense macrocephalum). This rare plant is found on the Haleakala volcano on the island of Maui, Hawaii. This specimen was photographed on the Haleakala Crater rim, in Haleakala National Park, at an elevation of 3055 metres.
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