A blue phycobilin happening particularly in the cells of cyanobacteria.
A pigment from light-harvesting phycobiliprotein household, with allophycocyanin and phycoerythrin, an accessory pigment to chlorophyll.
A blue coloring matter found in certain algæ.
A blue color matter that will be present, and chlorophyl, within the cells of particular algæ, and imparts to them a bluish-green color, as with the Cyanophyceæ or Phycochromacæ. It is soluble in water, but insoluble in liquor or ether.