Dig deeper at SERNEC, a consortium of southeastern herbaria.
Check out EDDMapS.org to see where this has been reported.
Spermatophytes (seed plants): Angiosperms (flowering plants): Monocots: Asparagales
Click or hover over the thumbnails to see larger pictures.
Keith Bradley kab_m_botryoides_3957
February Lexington County SC
Corolla nearly spherical, the lobes strongly recurved, per Weakley's Flora.
JK Marlow jkm140421_509510
April Buncombe County NC
Botanical Gardens at Asheville
Similar to M. atlanticum, but w globose flowers & flat leaves to 3/8" wide, per Wildflowers of the Southern Mountains.