Dactylocladus shares with Crypteronia and Axinandra the basic ordinal embryological features found in other Myrtales. The three genera also have an ephemeral endothecium and ephemeral nucellar tissue, ...

This is a preview. Log in through your library . Abstract The identities of the digits of the avian forelimb are disputed. Whereas paleontological findings support the position that the digits ...

THIS learned and imposing monograph will in the course of time take its place alongside Dobell's "Leeuwenhoek' as one of the classics of the critical and historical literature of biology. We already ...