From personal experience of sending seed to Ausrtalia.....The first time I sent some Darlingtonia seed to Sean Spence
He told me how the seed should be labeled..with the correct name of plant on package ie Darlingtonia Californica ,and how many seeds.
Success
The second time around a buyer,(NOT Sean), wanted a very large quantity of seed..said there was no need of putting anything on package.
Failure
Unless of course I was ripped off!