Galinsoga parviflora is a herbaceous plant in the Asteraceae (daisy) family. It has several common names including Guasca (Colombia), Galinsoga (NZ), gallant soldier (USA).

It is also known by the taxonomic name Tridax parviflora

Galinsoga parviflora was brought from Peru to Kew Gardens in 1796, and later escaped to the wild in Britain. In Britain its name Galinsoga is sometimes popularly rendered as "gallant soldiers", and then sometimes altered to "soldiers of the Queen".

In Colombia it is used as a spice herb in the soup Ajiaco. It can also be used as an ingredient in leaf salads.

In much of the world it is considered a weed

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