Range
Endemic to Hawaii, Argyroxiphium sandwicense macrocephalum is found on the island of Maui upon the Haleakala volcano, whilst A. s. sandwicense is found on Mauna Kea on the island of Hawaii itself (2).
Habitat
Inhabits alpine cinder deserts, on Hawaiian volcanoes at heights of between 2,125 and 3,750 metres above sea level (2).