Dear All: I work with the Cyanoscope project on iNaturalist. We are developing a citizen science project to collect and identify photographs of cyanobacteria. Several people involved with our group object to the use of the common name "blue-green algae" to describe the phylum Cyanobacteria. As you may know, the name blue-green algae has been historically used to describe this group but many feel that this is misleading because the cyanobacteria are bacteria and not algae. Certainly, we can argue that algae is not a taxonomic name but a descriptor applied to a diverse group of photosynthetic organisms. However, many feel that we should stress their bacterial origins of this group and would prefer the common name of "cyanobacteria" be used instead. Personally I am neutral on this issue but do want to support that members of our group who have strong opinions on the subject. This lead to two questions: First, is it reasonable to consider changing the common name? And, second, if so how do we go about doing it? Thanks for your help on this. Bryan