Olivia cruenta S. F. Gray
The microalga Porphyridium sp. is a potential source for several products like fatty acids, lipids, cell-wall polysaccharides and pigments . The polysaccharides of this species are sulphated and their structure gives rise to some unique properties that could lead to a broad range of industrial and pharmaceutical applications. Additionally, P. cruentum biomass contains carbohydrates of up to 57% have been reported. Thus, the combined amount of carbohydrates in biomass and exopolysaccharides of this microalga could potentially provide the source for bio-fuel and pharmaceutical 
- Razaghi, Ali; Godhe, Anna; Albers, Eva (2014). "Effects of nitrogen on growth and carbohydrate formation in Porphyridium cruentum". Open Life Sciences. 9 (2): 156–162. doi:10.2478/s11535-013-0248-z.
- Copeland, H. F. (1956). The Classification of Lower Organisms. Palo Alto: Pacific Books, p. 41, .