Robuta

https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2021.758067/full Frontiers | Molecular Phylogeny and Taxonomy of the Genus Spumella (Chrysophyceae) Based on... The genus Spumella, established by Cienkowsky in 1870, is characterized by omnivory, two (rarely three) flagella, a short stick-like structure beneath the fl... of the