Glaucophyta

**Definition:** A phylum or class of freshwater microscopic EUKARYOTA sometimes considered to be plants or MICROALGAE. Their CHLOROPLASTS (called cyanelles) are believed to be derived from the direct endosymbiosis of CYANOBACTERIA.

**Tree numbers:** - B01.350

**Synonyms:** - Glaucophyceae - Glaucocystophyceae