無む花か被ひ花かMeanings1nounachlamydeous flower; naked flowerA botanical term for a flower that lacks a perianth (petals and sepals). Used in scientific contexts.無む花か被ひ花かは、花か被ひを欠かく花はなのことで、植しょく物ぶつ学がくの用よう語ごです。An achlamydeous flower is a flower that lacks a perianth; it's a botanical term.