buttonweed — English Dictionary

Noun

1. Any of numerous species of plants with button-like flowers, especially: Any of several plants of the genera Diodia and Hexasepalum (syn. Diodella), of the madder family.

2. Any of numerous species of plants with button-like flowers, especially: False buttonweed (Spermacoce spp.).

3. Any of numerous species of plants with button-like flowers, especially: Velvetleaf, Indian mallow (Abutilon theophrasti).

4. Any of numerous species of plants with button-like flowers, especially: Certain knapweeds (Centaurea spp.).

5. Any of numerous species of plants with button-like flowers, especially: Clustered bluet (Oldenlandia uniflora).

6. Any of numerous species of plants with button-like flowers, especially: Dwarf mallow, common mallow (Malva neglecta).

7. Any of numerous species of plants with button-like flowers, especially: Water buttons (Cotula spp.).