Cyclotella orientalis sp. nov. (Bacillariophyceae) from South Korea |
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Authors: | Jung Ho Lee Jun Chung Toshikazu Gotoh |
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Institution: | Department of Biology, College of Natural Science. Kyungpook National University, Taegu, 702-701 South Korea;Laboratory of Biology, Kki University School of Medicine, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka 589, Japan |
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Abstract: | Cyclotella ortentalis sp. nov, is described from an epilithic sample taken in Lake Imha, located in Kyungsangbuk-do. South Korea. The species is characterized by a conspicuous and short costa regularly extending from each marginal fultoportula to the valve margin. It can be included in the Cyclotella stelligeroid group. The new species can be separated from the most similar species C. stelligera Cleve et Grunov var. stelligera by the more distant position of marginal fultoportulae from the valve margin, the external long tubes of fultoportulae and having short costae. It differs from C. stelligera var. robusta Must, and var. hyalina Hust., in having much denser marginal striae; from C. glomerata H. Bachm., C. pseudostelligera Hust., C. stelligeroides Must, and C. woltereckii Hust., in its much larger valve, coarser marginal striae and short costae with fultoportulae. |
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Keywords: | Bacillariophyceae Cyclotella orientalis Cyclotella stelligera Cyclotella stelligeroid group diatom morphology taxonomy |
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