Abstract
The total number of currently accepted species of Cladoniaceae in the Hawaiian Islands is 22. Several taxonomic problems still exist, however. The effects of isolation are clear among Cladoniaceae. Endemism is high (c. 40%); and, the number of species low. The species must have reached the archipelago via long-distance trans-oceanic dispersal, probably aided by the abundant production of lichen propagules, such as soredia and microsquamules. Although most of the species found in Hawaii are widely distributed, the Hawaiian Cladoniaceae show slight affinities to those of E and SE Asia. Cladonia polyphylla Mont. & v.d. Bosch is an older name for C. fruticulosa Krempelh., and is lectotypified from authentic material. C. leprosula H. Magn. is included in C. ochrochlora Flörke.
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