Twenty years ago I contributed to Progressus Rei Botanicae, an article of some length on the position of Palaeozoic Botany at that time (Scott, 1907). The present occasion seems appropriate for taking a brief survey of the chief changes and advances in the subject since 1907. The space available demands that such a survey should be as concise as possible. It will be limited to the land vegetation of the period, and to work of outstanding morphological and evolutionary interest. We may group the Palaeozoic plants to be considered as follows: Bryophyta Psilophytales Articulatae Lycopodiales Ferns Spermophyta.