蒲ほ薦せんMeanings1nounbulrush matA mat woven from bulrushes. This is a rare, specific term; in modern Japanese, more common words like ござ or むしろ are typically used for mats.古ふるい文ぶん献けんには、蒲ほ薦せんを敷しいて座すわる習しゅう慣かんが記しるされている。Old documents record the custom of sitting on bulrush mats.