Common Names: Shoals Spiderlily, Cahaba-Lily, Rocky Shoals Spider Lily

No listed varieties:

from eFloras.org: "Hymenocallis coronaria is one of the most magnificent plants in nature."

Note: grows in shallow rocky areas, approximately three feet tall with distinctive six inch white flowers. Pollinated by a moth and Battus philenor, the Pipevine Swallowtail Butterfly. Blooms for one day. Six white, long narrow tepals, and one paper thin white corona with integrated anthers on the outer edge of thickened ridges. Long (beyond corona) green (darkened) stigma.

As the plant is out in the river a quarter mile from either shore, it must have a large showy flower to tell it's pollinators to come visit it. The large flower (corona) needs to be structurally able to survive the intense rainfall events, so it has the six thickened ridges. Very clever design.

Fall-Line Piedmont
TRAIL: The Clearing-Augusta Canal, Savannah River
HABITAT: shallow rocky shoals
ELEVATION: 45 m, (145 ft)
BLOOM TIME: 11-MAY