United States, Hawaii, Floor of Kilauea Crater, Hawaii National Park
19.406031 -155.280519 +-1000m.
Most of these plants were growing near steam cracks, where condensed steam supplied moisture. However, some grew far enough away from these cracks so this moisture did not reach them.
some of them not over 100 yards from the edge of the Halemaumau pit crater, last active in 1934