A description of the "Brazilian Haiku" can be found at http://AboutPoetry.com.  It seems that Guilherme de Almeida was the first writer who brought the Haiku to Brazil. The Brazilian haiku has a rhyme scheme. That looks like this:

- - - - X
- O - - - - O
- - - - X

(X rhymes with X and O rhymes with O)

Example:

The young brown bear climbed
the tree, to steal the honey
as the bee hive chimed

© DragonBlue
Phoenix, Az 85283

Source:
http://www.lsi.usp.br/usp/rod/poet/hai_rime.html