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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