Fungi:> Basidiomycota:> Agaricomycetes:> Gomphales:> Phallaceae
Species: Clathrus species
Genus: Unidentified

This is a stinkhorn.
It has a whitish or pinkish hollow stem-like base.
They continue to lengthen with 4 to 8 scarlet arms rising from the stem top which divide in two.
The tips of which are joined to the adjacent pair when young which breaks free as it ages.

Thanks to Clive Shirley and his excellent website – The Hidden Forest:
http://hiddenforest.co.nz/fungi/