This page summarizes all known problems with sample identity and purity. You should cross-check any sample that you used against this website.

Known issue about BLAST: if you are trying to BLAST with entire clade of these 4 names (Chloranthales, Cycadales, Ginkgoales, Gnetales), for the first three ones, please use the order level with the same name instead, and for Gnetales, please use with Ephedrales and Gnetales of order level instead.