Systematic

Solving the relationships among taxa in complexes that have experienced these phenomena presents a unique challenge for systematists, and an opportunity to increase our understanding of phylogenetic conflict and the historical processes it represents (Sessa et al.

Although most fungal systematists can readily distinguish Clavariadelphus from other clavarioid, cantharelloid, craterelloid or gomphoid members of Aphyllophorales (Donk, 1933; Corner, 1950, 1970; Wells and Kempton 1968; Petersen, 1972; Petersen et al., 1974), delimitation of infrageneric taxa has been proven difficult in many cases.

Genetic and cytogenetic studies have confirmed the hypothesis shared by systematists that it is a nonmonophyletic group (SAITOH et al., 2003).

Many systematists like me practice taxonomy (the naming of new species) and piece together what scientists call the "tree of life." All organisms are related to each other, and we can make educated guesses about their history.

These species, which are widespread in Turkey, are mistaken for each other by butterfly systematists as well as by amateur butterfly watchers.

It is assumed that these habitats host plants whose ancestors occupy a basal position in the phylogeny of their respective groups, thus some systematists argue that the taxa diverged long ago, and the rupicolous floras are relict communities.

This approach to high throughput Phylogenomics-based on thousands of loci-is likely to basically change the way that systematists gather and analyse data.

Finally, and perhaps most seriously for systematists, there was a resolution about the naming of Acacia species.

Within the 15 peacock bass species currently recognized by systematists, Cichla kelberi (Kullander & Ferreira 2006) deserves special attention since it was introduced into most Brazilian watersheds to enhance game and commercial fisheries or to control undesirable fishes (Santos et al.

Those differences may well be important in the overall "gestalt" of the sclerite, but they are not the differences that systematists have articulated in their descriptions.