The biomorphological radiation of the Campanulaceae is outlined. Certain aspects of ontogeny and life-form are specific and constant for the tribes and genera of the family, and for the sections, ...

Ludwigia sect. Dantia is a polyploid complex (x = 8) of five species that are distributed mainly in the Coastal Plain of the southeastern United States, although two species, L. palustris and L.

Mosasaur evolution represents one of the most striking examples of evolutionary innovation among marine reptiles. Emerging in the mid-Cretaceous, these marine squamates rapidly diversified to occupy a ...

THE annual general meeting of the Association for the Study of Systematics in General Biology was held in the rooms of the Linnean Society, Burlington House, Piccadilly, London, on December 15. The ...