The XylemDB provides an anatomical description and classification of the xylem and phloem of herbs, shrubs and trees. Anatomical pictures of about 600 species are presented.

The Bibliography of Dendrochronology is a free searchable archive of printed documents relevant to tree-ring research worldwide. It was compiled and is updated yearly by Henri D. Grissino-Mayer. It currently contains over 13,000 references dating back to 1737.

Verfügbare Sprachen: englisch

This web-based identification key is useful to identify wood species with online high resolution cross- and length sections from trunks and twigs. It is valuable for showing both the variability of wood as well as documenting what many find an unpleasant fact, namely that many tree species share similar wood anatomy.