David Fleetham / Hawai'i silversword (Argyroxiphium sandwicense macrocephalum) covered by an unusual snowfall near crater summit of dormant Haleakala / East Maui Volcano. Haleakala National Park, Maui, Hawaii. Feb...

David Fleetham / A rare Haleakal silversword plant (Argyroxiphium sandwicense macrocephalum) in the early stage of blooming, Maui, Hawaii.

David Fleetham / Haleakala silversword (Argyroxiphium sandwicense macrocephalum), endemic to the slopes around Maui's dormant volcano, with horse riders on trail, Hawaii. Model released.

David Fleetham / Horse riders on trail out of Haleakala Crater, Maui's dormant volcano, stopping to look at the endemic Haleakala silversword (Argyroxiphium sandwicense macrocephalum), Hawaii. Model released.

David Fleetham / Rare East Maui silversword (Argyroxiphium sandwicense macrocephalum) growing at 10,000 feet summit of Haleakala, dormant volcano in Haleakala National Park, Maui, Hawaii.