I don't know for sure about those species, but have a note on storage of
'slightly moist'. What I have tried seems to work well. I have good
quality sphagnum that I use for some orchids. I use NewZealand sphagnum
mostly. If you take some that has not previously been used and soak it in
water till it is saturated, then squeeze water out until it is just damp....
then put into ziplock bags with the bulb in the centre... and press most of
the air out of the bag - this seems to work well. The moss has antibiotic
properties. It works quite well. You just have to open them once in a
while to check on them. Hope this is of help.