HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) Submit a response Alert me when this article is cited Alert me when eLetters are posted Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in ISI Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (12) Citing Articles via Google Scholar Google Scholar Articles by Jansen, S. Articles by Smets, E. Search for Related Content PubMed PubMed Citation Articles by Jansen, S. Articles by Smets, E. Agricola Articles by Jansen, S. Articles by Smets, E.

Wood anatomy of Elaeagnaceae, with comments on vestured pits, helical thickenings, and systematic relationships¹

¹ Laboratory of Plant Systematics, Botanical Institute, K.U. Leuven, Kardinaal Mercierlaan 92, B-3001 Heverlee, Belgium

ABSTRACT

The secondary xylem of Elaeagnus, Hippophae, and Shepherdia is described and illustrated in detail. Shrubs and small trees of Elaeagnaceae 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.

Key Words: Elaeagnaceae • helical thickenings • vestured pits • wood anatomy

This article has been cited by other articles:

				S. Jansen, Y. Sano, B. Choat, D. Rabaey, F. Lens, and R. R. Dute Pit membranes in tracheary elements of Rosaceae and related families: new records of tori and pseudotori Am. J. Botany, April 1, 2007; 94(4): 503 - 514. [Abstract] [Full Text] [PDF]

				S. Jansen, P. Baas, P. Gasson, F. Lens, and E. Smets Variation in xylem structure from tropics to tundra: Evidence from vestured pits PNAS, June 8, 2004; 101(23): 8833 - 8837. [Abstract] [Full Text] [PDF]