Title: Wood anatomy of Elaeagnaceae, with comments on vestured pits, helical thickenings and systematic relationships
Authors: Jansen, Steven ×
Piesschaert, Frederic
Smets, Eric #
Issue Date: Jan-2000
Publisher: Botanical soc amer inc
Series Title: American journal of botany vol:87 issue:1 pages:20-28
Abstract: The secondary xylem of Elaeagnus, Hippophae. and Shepherdia is described and illustrated in detail. Shrubs and small trees of Elaeaguaceae have ring-porous or semi-ring-porous wood with simple perforation plates, vascular tracheids, fiber-tracheids, diffuse or rarely paratracheal axial parenchyma, and uni- or biseriate rays in Hippophae and Shepherdia, but wider rays in Elaeagnus. Walls of vessel elements, especially narrow ones, tracheids, or fiber-tracheids sometimes show helical thickenings; in a few instances these intergrade with small bud-like protrusions associated with pits. Scanning electron microscopy illustrates that small to vestigial vestures are present in all species studied, although nonvestured pits are also common. The analogous nature of vestures and helical thickenings is considered. Comparative wood anatomy suggests a rather isolated position of the family Elaeagnaceae; affinities with Rhamnaceae, Proteaceae, and Thymelaeaceae are discussed.
ISSN: 0002-9122
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Plant Systematics and Ecology Section - miscellaneous
× corresponding author
# (joint) last author

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