Last Updated
：2025/11/25
leaf sheath
（ plural ）
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(botany) A structure at the base of a leaf's petiole that partly surrounds or protect the stem or another organ that it subtends.
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leaf sheath
The orchid's leaf sheath wrapped tightly around the stem, protecting the emerging bud.
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The orchid's leaf sheath wrapped tightly around the stem, protecting the emerging bud.
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