A new genus of Theaceae, Andrewsiocarpon, from the Middle Eocene of southeastern North America, is described based on fruit and seed remains. Andrewsiocarpon is a loculicidally dehiscent five-valved ...

The field of palynology is reviewed in terms of its contributions to angiosperm systematics and phylogeny. Principal pollen characters which are phylogenetically useful at higher taxonomic levels ...

The Podostemaceae, a distinctive family of aquatic angiosperms, inhabit fast‐flowing rivers and waterfalls where they colonise submerged rocks. Their remarkable morphological adaptations—ranging from ...