Collecting macrofungi for barcoding

Hi all

I am about to go on an official barcoding trip in South Africa. Besides the small ascomycetes that is more my specialty, I will also collect some larger fungi.  THis trip has a public profile, so the larger fungi will be there for the people to better understand and to attract their attention.  Because I want to do it properly, are there any do's and dont's when I collect the larger fungi and preparing them for barcoding, e.g. how much tissue must I put in directly, I should probably dry first?  THere are those of you with much more experience than me. I guess I will stick to the more robust ones and leave the fragiles ones for later.

I have barcode kits.

Many thanks,

Marieka