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Algae > Volume 11(1); 1996 > Article
Algae 1996;11(1): 59-64.
Note on the Dictyotaceae (Phaeophyta) from Ullungdo Island, Korea
Wook Jae Lee, In Kyu Lee
Department of Biology, Seoul National University
Taxonomic account is given to the seven species of the Dictyotaceae, Dictyopteris divaricata (Okamura) Okamura, Dictyota dichotoma (Hudson) Lamouroux, Pachydictyon coriaceum (Holm.) Okamura, Padina arborescens Holmes, P. crassa Yamada, Spatoglossum pacificum Yendo, and Zonaria diesingiana J. Agardh, collected from Ullungdo Island, Korea. Dictyopteris divaricata is distinguished that it has larger, broader and less undulated thallus. Dictyota dichotoma shows much morphological variation according to growing season. Pachydictyon coriaceum is characterized by dichotomous branch, two cell layered cortex and one large celled medulla. Padina arborescens is distinguished by dark, hard and rarely lobed thallus and has eight to nine medullary cells. P. crassa is characterized by light brown, much lobed thallus and four to six celled medulla. Spatoglossum pacificum has variation in gross morphology according to season. Zonaria diesingiana has much lobed thallus and greenish brown, exuberant fibrous protuberance looks like midribs from cortex in basal part of thallus.
Key words: Dictyotaceae, Phaeophyta, Ullungdo Island, Korea, taxonomic account

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