Hello nic and welcome to the forum. The only thing I can be sure of is that your plant is one of the Umbellifera family. I thought at first it might be wild carrot but the leaves are not right, similarly for members of the Achilleas.
There are lots of people on here that may be able to pinpoint the exact plant that you have photographed. Good luck.
Cacoethes: An irresistible urge to do something inadvisable
Hi @nicxr007 I'm afraid this forum is not the best place to ask for ID of a plant so far removed from our European gardens. I suggest you try to ask on sites/forums specialized in South American plants.
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In the sticks near Peterborough
The flowers on umbellifers that grow here have individual flowers that are nor symmetrical.
eg wild carrot.
https://www.google.com/search?client=firefox-b&biw=1920&bih=943&tbm=isch&sa=1&ei=CYF-W-H1EYn4wQL48r-4AQ&q=daucus+carota+flower&oq=daucus+carota+flower&gs_l=img.1.0.0j0i24k1.172970.181615.0.183233.51.24.0.8.8.0.132.1869.21j2.23.0....0...1c.1.64.img..30.20.1011...0i67k1j0i10k1j0i30k1.0.RmcRcQ7dw7w#imgrc=wXNSusJlOvFqXM:
eg Hogweed.
https://www.google.com/search?q=Heracleum+sphondylium+flower&client=firefox-b&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiKwKTp8YLdAhVSKVAKHV01DpsQ_AUICigB&biw=1920&bih=943#imgrc=ol_Jgrla15AEFM:
The flowers in nicxr007 pic are uniform and have 5 identical petals.