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The Khorat plateau is littered with distinctively styled sema: see, for instance, Your Guide to Thai Culture that cites Thailand: Traits and Treasures, National Identity Board, ©2005 by Office of The Permanent Secretary, The Prime Minister’s Office, ISBN  974-9771-52-4. -- Pawyilee ( talk) 12:26, 4 May 2011 (UTC) reply

Not all boundary markers have a leave shape. The photo of those of Wat Chet Yot is an example of it. There the shape is a short octagonal column. Are those boundary markers also called Bai Sema? FredTC ( talk) 08:19, 18 September 2011 (UTC) reply