Nature which consists of so many variabilities of living components of the environment possesses useful, harmful and inactive chemical constituents. The classification based on these chemical constituents is known as chemotaxonomy. All the living components of the environment produce secondary metabolites that are derived from primary metabolites. The chemical structure of the secondary metabol...

Actinobacterial classification was originally based largely on morphological observation; it is not adequate in itself to differentiate between many genera, because some are so sim‐ ilar morphologically, but differ from their diagnostic chemical composition. In search of reliable classification methods reflecting phylogenetic relationships, at least to the genus level, it has been demonstrated ...

The taxonomy of green microalgae relies traditionally on morphological traits but has been rapidly changing since the advent molecular methods. Stichococcus Nägeli is a cosmopolitan terrestrial algal genus class Trebouxiophyceae that recently split into seven lineages, which, along with Pseudostichococcus, comprise Stichococcus-like group; there need to further characterize these genera, they ...

Many important molecules have been discovered from tropical and sub-tropical plant biodiversity. However, the largest part of the chemical profile of such biodiversity remains unknown. Combining ethnopharmacological and chemotaxonomical investigation can be a good strategy in bioactive compound discovery. South American Psychotria species studied by this approach proved to be a rich source of n...