Shenandoah Valley Sinkhole Pond (Typic Type) – CEGL007858
Virginia sneezeweed (Helenium virginicum) is endemic to seasonal sinkhole ponds in two disjunct regions: the Shenandoah Valley of Virginia and southern Missouri. It is specially adapted to the hydroperiods and soils of these rare wetland habitats. © DCR-DNH, Gary P. Fleming