The importance of substrate type in colonization by Cryptonemia hibernica Guiry et Irvine its associated algae

In 1971, drift material of the genus Cryptonemia was collected by Guiry (Guiry & Irvine 1974) at Camden at the mouth of Cork Harbour on the south coast of Ireland. Guiry and Irvine, having examined the various species of the genus, concluded that the Cork Harbour material was most closely related to a group of three foliose species from the eastern Pacific, namely, C. obovata, J. Ag., C. angustata (Setch et Gardn.) Daws., and C. borealis Kylin, and in particular to the last species. However, the Irish material was not completely identifiable with any of these three eastern Pacific species so that Guiry and Irvine raised it to the status of a new species, C. hibernica, ‘pending a revision of the genus’.