To some extent classification is subjective. Taxonomists differ in the relative importance they ascribe to particular characters and in the degree of difference between related taxa they deem ...

Ranunculeae represent a highly diverse and cosmopolitan tribe within Ranunculaceae. Because of the great diversity of morphological features and lack of molecular phylogeny for the tribe, the ...

New World Genus Perilypus is redefined, and its natural history summarized. Species occur in at least three macrohabitats defined as oak, liana, and herbaceous assemblages. Beetles with rectangular ...