The relationships among the genera of fungus gnats in the mycetophilid subfamily Leiinae are unclear, and the monophyly of this group is questionable. This monograph provides an extensive phylogenetic ...

CC0 Usage Conditions ApplyClick for more information. To some extent classification is subjective. Taxonomists differ in the relative importance they ascribe to particular characters and in the degree ...

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 ...