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Foliar anatomy ofPolygonum (Polygonaceae): Survey of epidermal and selected internal structures

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Abstract

Several anatomical characters in leaves were described, and their distribution determined, for 153 species ofPolygonum, mostly from herbarium specimens. Structures surveyed were epidermal (glandular and nonglandular trichomes, nodules, specialized parenchyma, stomatal apparatus) and internal (cavities, crystals, laticifer-like cells, nodules, subepidermal fibers). Cleared leaves were supplemented by resin-embedded sections and SEM preparations of selected species. No feature defines any taxonomic section, but some features occur only within one section. Laticifer-like cells, epidermal and internal nodules, resin cups, and unique epidermal and subepidermal cavities seem to be unknown elsewhere; other features (invaginated epidermal cells; enlarged crystal cells confined to paraveinal layer) are rare among angiosperms.

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Authors and Affiliations

  1. Department of Botany, Iowa State University, 50011-1020, Ames, IA, USA

    N. R. Lersten

  2. Department of Biology, University of Wisconsin, 54481-3897, Stevens Point, WI, USA

    J. D. Curtis

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  1. N. R. Lersten
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  2. J. D. Curtis
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Lersten, N.R., Curtis, J.D. Foliar anatomy ofPolygonum (Polygonaceae): Survey of epidermal and selected internal structures. Pl Syst Evol 182, 71–106 (1992). https://doi.org/10.1007/BF00941415

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  • DOI: https://doi.org/10.1007/BF00941415

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