Hexasepalum teres (Walter) J.H. Kirkbride
			Detail
- Family
 - Rubiaceae
 - Botanical Name
 - Hexasepalum teres (Walter) J.H. Kirkbride
 - Common Name
 - Common Buttonweed, Rough Buttonweed
 - Synonym(s)
 - Diodia teres Walt.
 - Flora of Virginia Name/Status
 - Hexasepalum teres (Walter) J.H. Kirkbride
 - Comments
 - Bacigalupo & Cabral (1999, Darwiniana 37: 153-165) argued that the genus Diodella (originally circumscribed by Small) should be recognized as distinct from Diodia on morphological grounds. Kirkbride & Delprete (2015, J. Bot Res. Inst. Texas 9: 103-106) demonstrated that the name Hexasepalum has priority over Diodella.
Fernald (as Diodia teres, in Gray's Manual) recognized 4 varieties which have received little or no attention since. Two are reported as narrow endemics which seem a stretch considering the weedy nature of the species. - Habitat
 - Various dry, open habitats, including dunes, sandy roadsides, rock outcrops, and fields; occasionally in alternately wet and dry, hardpan soils and seasonally flooded wetlands that become very dry by late summer. Common throughout.
 - Native Status
 - Native
 
To save this map, right-click (control-click for Mac users) on the map and choose "Save Image As...".