Ulva is not a valid species
Did you mean one of the species from the following list?
Acacia fulva - 1 collection objects
Drummondita fulva - 4 collection objects
Iris fulva - 1 collection objects
Passalora fulva - 1 collection objects
Ulva clathratioides - 1 collection objects
Ulva compressa - 4 collection objects
Ulva lactuca - 9 collection objects
Ulva linza - 2 collection objects
Ulva parva - 2 collection objects
Ulva reticulata - 1 collection objects
Ulva rigida - 4 collection objects
Ulva sp. - 1 collection objects