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Algae > Volume 26(3); 2011 > Article
Algae 2011;26(3): 221-227. doi: https://doi.org/10.4490/algae.2011.26.3.221
Taxonomic re-examination of a carpet-like Codium (Chlorophyta) from Jeju, Korea
Hyung Woo Lee1 and Myung Sook Kim1,*

1Department of Biology, Jeju National University, Jeju 690-756, Korea
*Corresponding Author  Email: myungskim@jejunu.ac.kr
There are three carpet-like Codium species with a broadly expanded thallus reported from Korea and Japan: C. latum Suringar, C. tapetum Y. Lee, and C. tenuifolium Shimada, Tadano and J. Tanaka. During surveys of green algal diversity, we encountered a Codium species with carpet-like thalli from several sites on Jeju Island. To confirm the taxonomic identity of these specimens, we studied the morphological features and obtained rbcL gene sequences. The morphological and sequence data indicated that the carpet-like Codium specimens from Jeju are C. tenuifolium from Japan, but distant from Japanese C. latum. We propose that the carpet-like specimens from Jeju should be renamed C. tenuifolium, instead of C. tapetum or C. latum. C. tenuifolium is characterized by a tenuous, carpet-like and erect thallus with a very short and slightly compressed stipe arising from a discal holdfast, sub-pyriform and clavate utricles with a tumid and swollen apical head, and globular or sub-globular gametangia issued at the basal portion of the utricles.
Key words: Codium latum; C. tapetum; C. tenuifolium; morphology; rbcL; taxonomy

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