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| || | ||  /_   _// \ \\ / //   / _ \\   |__  //  
| || | ||   -| ||-   \ \/ //   / //\ \\    / //   
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  `---`    `-----`      `     `-`   `-`  `-----`

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Text this: Two new taxa of Achnanthidium and Encyonema (Bacillariophyceae) from the Yom River, Thailand, with special reference to the areolae occlusions implying ontogenetic relationship