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Nectaries in Some Neotropical Species of Polypodium (Polypodiaceae): Preliminary Observations and Analyses
Suzanne Koptur, Alan R. Smith and Irene Baker
Vol. 14, No. 2 (Jun., 1982), pp. 108-113
Published by: Association for Tropical Biology and Conservation
Stable URL: http://www.jstor.org/stable/2387739
Page Count: 6
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The occurrence of nectaries in ferns is reviewed, and a new report of nectaries in the Polypodium squamatum group is made. Nectars of five species of Polypodium (P. myriolepis, P. pyrrholepis, P rosei, P sanctae-rosae, and P thyssanolepis), as well as Drynaria quercifolia, D. rigidula, and Polybotrya osmundacea, were analyzed for sugars and amino acids. The majority of the nectars are sucrose-poor, and most have fairly low amino acid concentrations, though a great number of amino acids were detected. The findings are discussed in light of other nectar analyses.
Biotropica © 1982 Association for Tropical Biology and Conservation