The flowers I saw yesterday—now gone without a trace; nighttime wind

昨日見た花は跡なし夜の風

kinō mita hana wa ato nashi yoru no kaze

(Masaoka Shiki 正岡子規)

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In haiku, when unspecified “flowers” (hana) are mentioned, the word is usually understood as referring to cherry blossoms (sakura).