Description of a New Species of the Genus Cryptomonas (Cryptophyceae: Cryptomonadales), Isolated from Soils in a Tropical Forest

A new species, Cryptomonas tropica sp. nov., is described from Cat Tien National Park (Vietnam) based on morphological and molecular data. Strains of the species were isolated soil, which an unusual environment for photosynthetic cryptomonads. This has elliptical cells in ventral view a single plastid notched into several irregular lobes without microscopically visible pyrenoids. Phylogenetic relationships inferred nuclear-encoded SSU, LSU, ITS2 rDNA psbA cpDNA show that forms independent branch phylogenetic tree genus Cryptomonas. In all analyses, this lineage was sister to clades containing other small-celled, pyrenoid-less species: erosa, C. parmana, macilenta, obovoidea commutata. been observed two distant localities Park.