Perfoliate
Decussate leaves and perfoliate stem. Photo by C. A. Gracie.
Creator(s): C. A. Gracie
Description: Perfoliate stems and decussately arranged leaves of Eupatorium perfoliatum based on a plant without a voucher at the Nellie Hill Reserve of the Nature Conservancy in Duchess County, New York
Rights: Rights reside with creator, otherwise property of NYBG.
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Title
Perfoliate
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Definition
Referring to a stem that penetrates two leaf bases that are completely fused together. When two leaf bases wrap around the stem the leaf is said to be amplexicaulous or clasping.
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Related Terms
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