A TEXT-BOOK by such an experienced teacher as Prof. H. H. Dixon -is very welcome. To judge from the introduction, this book represents in condensed form the series of lectures which the author has ...

Asteraceae presents one of the most diverse and intricate reproductive systems among flowering plants. The family is typified by its composite inflorescences, which combine both ray and disc florets ...

The ability for communities to preserve their structure and function in the face of climate change is partially dependent on whether or not species within them can successfully reproduce. Two ...