I found it growing along the road site. The flowers remind me of Ornamental Oregano (Oregano rotuntifolia), but the Genus 'Oregano' is not occuring in Brazil and I didn't find anything alike either in the Lamiaceae family..

Have you checked Euphorbiaceae Myriam?

Euphorbiaceae I started with before searching in the Lamiaceae family, Janet, didn't find anything there either.

bonitin said:Euphorbiaceae I started with before searching in the Lamiaceae family, Janet, didn't find anything there either.

That saves me looking through the long list!

I've checked on sites I have for other families too, but not on Kew. There is a similarity to Hops so I checked Cannabaceae on Flora do Brasil, that was an easy one and can be discounted too.

There is one photo of a plant I found on another site I have in Euphorbiaceae which showed a good likeness to the stem structure...

http://sura.ots.ac.cr/local/fl...

Sapium which isn't in Brazil, but I wonder if this isn't an endemic species?

http://sura.ots.ac.cr/local/fl...

Grrr, lost my whole post by pressing the wrong key!

Thanks Janet, yes I can see what you mean with the likeness of the stem structure of that plant with mine.
But Sapium species seem to be all shrubs, mine was a herb, quite small, about 25-30cm, it looked adult too.
Of course it can be an exotic emigrant, especially when growing along the road side..

It doesn't have to be Sapium sp. Myriam, but could still be in the same family due to the likeness.

Yes, it still could be in the Euphorbiaceae family Janet, but so far I haven't found anything alike..

I found it!
It is Euphorbia comosa!
http://fm2.fieldmuseum.org/pla...

JRsbugs said:Have you checked Euphorbiaceae Myriam?

shot into the black

It would have been difficult to pick it from the leaves on the photo on the fielmuseum! There's a photo on wiki too ..

http://es.wikipedia.org/wiki/E...

Thanks for the acorn Stefan, I'll plant it with the others growing under my Oak tree. ;)

Thanks, Stefan, thanks Janet! Yes, I had seen the photo on Wiki too!

bloom are typical for most Euforbias