Cooler temperatures and consistently moderate rainfall support a diverse community of invasive and native plant species growing on the always-green cloud-covered lower slopes of Haleakala volcano's southwest-facing flank.
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Mountain Apple (Syzygium malaccense; 'ohi'a 'ai in Hawaiian) foliage, seedpods, and flowers. Kula, 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.
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.
Silversword (Argyroxiphium sandwicense macrocephalum) growing near the summit of Haleakala volcano, south Maui.
Silversword (Argyroxiphium sandwicense macrocephalum) growing near the summit of Haleakala volcano, south Maui.
A newly mature Silversword (Argyroxiphium sandwicense macrocephalum) setting its first buds. Haleakala National Park, south Maui.
An immature Silversword (Argyroxiphium sandwicense macrocephalum) growing along the Haleakala Summit trail. Haleakala National Park, south Maui.
A small mature Silversword (Argyroxiphium sandwicense macrocephalum) setting flowers. Haleakala National Park, south Maui.
Golfball-sized buds of a mature Silversword (Argyroxiphium sandwicense macrocephalum). Haleakala National Park, south Maui.
Silversword (Argyroxiphium sandwicense macrocephalum) growing near the summit of Haleakala volcano, south Maui.
Silversword (Argyroxiphium sandwicense macrocephalum) growing near the summit of Haleakala volcano, south Maui.
Silversword (Argyroxiphium sandwicense macrocephalum) growing near the summit of Haleakala volcano, south Maui.
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