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Photographer: Emmet J. Judziewicz
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Family Rubiaceae
Diodia teres Walter
button-weed, poor-Joe
Diodia: from the Greek for thoroughfare, from this plants habitats
teres: cylindrical, circular in cross-section
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| Status: | Special Concern |
| Plant: | erect to sprawling, annual, 8"-32" tall forb |
| Flower: | white to pale purple, 4-parted, 1/4" long, funnel-shaped, stalkless; solitary from the upper leaf axils; blooms July-Sept. |
| Fruit: | dry, hairy, roundish, splitting into 2 nutlets |
| Leaf: | linear to lance-like, opposite, stalkless, stiff, rough |
| Habitat: | dry; in sandy soil, usually on large river floodplains |
| (Glossary) |
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