You can use it, no problem there.
I think it's best to give the algae a common name and also reference the scientific latin name as well.
I have not identified the specific species of Caldophora, but most are branching.
Dusko has a good article and images of algae on this site and his own(do a google search and you should pull it up with his name, algae etc)
Regards,
Tom Barr