👉 The term "phycochromaceous" refers to a type of mineral that is found in certain types of plants, particularly in the roots and tubers. Phycochroma (also known as phycocyanin) is a pigment produced by algae, which are part of the phytoplankton family. These algal cells contain a large amount of this pigment, making them appear blue or green to the human eye. Phycochromaceous can be found in various parts of an