Silversword (Argyroxiphium sandwicense macrocephalum) growing near the summit of Haleakala volcano, south Maui.
The leaves of an immature Silversword (Argyroxiphium sandwicense macrocephalum) display their geometrically intricate arrangement around the central stalk of the plant. The summit caldera of Haleakala volcano, Haleakala National Park, south Maui.
About the size of a softball baseball, immature Silverswords (Argyroxiphium sandwicense macrocephalum) plants are scattered around the summit caldera of Haleakala volcano, south Maui.
Silversword (Argyroxiphium sandwicense macrocephalum) growing near the summit of Haleakala volcano, south Maui.
Flora's Paintbrush (Emilia fosbergii),  Wailua Cove, near Kuloa, east Maui. Also known as Lilac Tasselflower, Florida Tasselflower.
Tree Marigold (Tithonia diversifolia), Hana Maui Botanical Garden, east Maui.
Tree Marigold (Tithonia diversifolia), Hana Maui Botanical Garden, east Maui.
A newly mature Silversword (Argyroxiphium sandwicense macrocephalum) setting its first buds. Haleakala National Park, south Maui.
Golfball-sized buds of a mature Silversword (Argyroxiphium sandwicense macrocephalum). Haleakala National Park, south Maui.
About the size of a softball baseball, immature Silverswords (Argyroxiphium sandwicense macrocephalum) plants are scattered around the summit caldera of Haleakala volcano, south Maui.
About the size of a softball baseball, immature Silverswords (Argyroxiphium sandwicense macrocephalum) plants are scattered around the summit caldera of Haleakala volcano, south Maui.
About the size of a softball baseball, immature Silverswords (Argyroxiphium sandwicense macrocephalum) plants are scattered around the summit caldera of Haleakala volcano, south Maui.
See photo in original gallery.