A completely resolved species-level phylogeny is necessary for studies in macroevolution and macroecology. Sampling fraction and taxonomy are the two most commonly used methods to account for incomplete sampling, however, the pros and cons for both methods are unappreciated. Here I biefly demonstrate superior method --- TACT, using dated Vitales tree and its taxonomy to generate a completely resolved species-level Vitales tree.
**Rosids**, among the largest clades of angiosperms (90,000–120,000 species, ca. 25% of all angiosperms), exhibit tremendous overall diversity in morphology, chemistry, habit, reproductive strategy, and life history. However, our knowledge of this clade is remarkably limited along any sampling metric, hampering efforts to better understand its incredible species diversity.