buttonweed

English

Etymology

From button +‎ weed.

Pronunciation

• Audio (Southern England):

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Noun

buttonweed (plural buttonweeds)

1. Any of numerous species of plants with button-like flowers, especially:
   1. Any of several plants of the genera Diodia and Hexasepalum (syn. Diodella), of the madder family.
   2. False buttonweed (Spermacoce spp.).
   3. Velvetleaf, Indian mallow (Abutilon theophrasti).
   4. Certain knapweeds (Centaurea spp.).
   5. Clustered bluet (Oldenlandia uniflora).
   6. Dwarf mallow, common mallow (Malva neglecta).
   7. Water buttons (Cotula spp.).

Derived terms

• annual buttonweed (Cotula australia)
• false buttonweed (Spermacoce spp.)
• feathery buttonweed (Leptinella scariosa)
• Iridescent buttonweed (Erythrymenia minuta)
• rough buttonweed (Hexasepalum teres, Diodia redula, Diodia teres)
• seaside buttonweed (Diodia serrulata)
• slender buttonweed (Diodia ocymifolia)
• stiff buttonweed (Diodia apiculata)
• tropical buttonweed (Diodia sarmentosa)
• Virginia buttonweed (Diodia virginiana)

References

• “buttonweed”, in OneLook Dictionary Search.
• Diodia on Wikipedia.Wikipedia
• List of Rubiaceae genera on Wikipedia.Wikipedia
• Spermacoce on Wikipedia.Wikipedia
• Abutilon theophrasti on Wikipedia.Wikipedia