title: [Gelatinous bast fibres in the phloem of some gymnosperms].
abstract: In the secondary phloem of some gymnosperms an anomalous structure in the cell wall of bast fibres was observed. Light and electron microscopic investigations of the phloem of roots and branches showed that the bast fibres exhibit a gelatinous layer typical for the tension wood fibres of hardwoods. In Epon-embedded material this layer appears homogeneous, whereas in the case of methacrylate-embedding it presents a meshwork-like structure. While in the xylem of branches the compression wood elements occur only on the lower side, the gelatinous fibres of the secondary phloem in branches and roots are distributed all around.
authors.affiliation: Institut für Holzbiologie und Holzschutz der Bundesforschungsanstalt für Forst-und Holzwirtschaft, Reinbek bei Hamburg.
authors.forename: W
authors.initials: W
authors.lastname: Liese
authors.forename: H R
authors.initials: HR
authors.lastname: Höster
vernacular_title: Gelatinöse Bastfasern im Phloem Einiger Gymnospermen.