觀無量壽佛經義疏 2.100

2.100

「『一一樹華，縱廣正當二十五由旬。』」三句示量。二十五由旬，計一千里。

"‘Each tree flower is exactly twenty-five yojanas in length and breadth.’" The three sentences show the size. Twenty-five yojanas amounts to one thousand li.