Gelidium is not a valid species
Did you mean one of the species from the following list?
Gelidium asperum - 2 collection objects
Gelidium australe - 6 collection objects
Gelidium corneum - 1 collection objects
Gelidium crinale - 4 collection objects
Gelidium isabelae - 4 collection objects
Gelidium johnstonii - 5 collection objects
Gelidium longipes - 1 collection objects
Gelidium pusillum - 4 collection objects