Using the quick search there are shown up to three reports about diatom Phaeodactylum:
The periodical nature reports that it is the diatom Phaeodactylum tricornutum ("The Phaeodactylum genome reveals the evolutionary history of diatom genomes" nature online, October 15th 2008)...
Biowissenschaften Chemie |Using the fulltext-search for the word diatom Phaeodactylum you can set up serveral searching-options > choose search options