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

 _____       ___      ______     ___      ______  
|  __ \\    / _ \\   /_____//   / _ \\   /_____// 
| |  \ ||  / //\ \\  `____ `   / //\ \\  `____ `  
| |__/ || |  ___  || /___//   |  ___  || /___//   
|_____//  |_||  |_|| `__ `    |_||  |_|| `__ `    
 -----`   `-`   `-`  /_//     `-`   `-`  /_//     
                     `-`                 `-`