The Floridean starch is a form of storage glucan that is found in red algae and glaucophytes.
Red algae form a distinct group characterized by these attributes:
Eukaryotic cells without flagella, centrioles, using fluoride polysaccharides as a food reserve, phycobiliprotein as an accessory pigment (giving red colour), with chloroplast lacking external endoplasmic reticulum and containing unstacked thylakoids.
Red algae (Rhodophyta) used as edible algae is a good source of energy, vitamins, and proteins.
It is estimated that one molecule of floridean is assembled from 15 glucose units a good source of energy.