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Facts About this Plant:

Synonyms: Diodella teres, Hexasepalum teres
Lifespan: Annual
Zones: N/A
Type: Forb
Bloom Time: July - September
Status: Native
Range:


Diodia teres, or Rough Buttonweed, is native to the southeastern half of the United States. It is an annual that grows in fields, roadsides, prairies and along railroads, often in disturbed soil. It blooms from mid summer into fall, with small white-purple flowers.

This plant looks similar to the other species in the genus, Diodia virginiana, but the two can be somewhat easily distinguished. Diodia teres usually has hairy stems, but not always, but it always has long stipules that come out of the leaf nodes; it also has purple flowers that are smooth, and its leaves are long and lance-shaped with little visible veining. Meanwhile, Diodia virginiana has no stipules at the leaf nodes, its stem is not hairy, it has white flowers which have fuzz on the petals, and its leaves are plumper and have more prominent veins on them. See photo for comparison.



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