瑜伽師地論略纂 8.109

8.109

論云「多羅掌」者，謂西方有樹，狀似此間蘆樹葉，人趣裁去四邊散葉，但取苗如鵝掌許大為扇，名多羅掌。

The treatise says "tāla palm": there is a tree in the Western regions whose appearance is similar to the reed tree leaves here; people cut off the scattered leaves on the four sides and take only the shoot about the size of a goose's palm to make a fan, which is called a tāla palm.