Grimmia pilifera
Plantae | Grimmiaceae | Grimmia | Grimmia pilifera
partially shaded a'a.
Haleakala National Park: E Haleakala Crater, along margin of Sophora-Dodonaea-Eupatorium-Pteridium-dominated kipuka ca. 0.2 mi N of Oili Puu surrounded by old aa flow