The anatomy of bark. V. Eucalyptus species with stringy bark

Abstract

The term "stringybark" has been applied to certain rough-barked eucalypts in which the outer bark is persislent, loose, and fibrous. This texture arises through the expansion of the phloem parenchyma, which causes the bundles of fibres to become widely separated from one another in the rhytidome.

This expansion, which may increase the cells to many times their original size, takes place after the periderm has formed, and immediately precedes the death of the cells and their transformation into rhytidome.

This feature is not confined to the series Pachyphloiae (stringybarks) but also occurs in several related series, and in some of the rough-barked bloodwoods.