Instead, the light-harvesting complexes (also called phycobilisomes), that consist of different proteins, sit on the inside of the plasma membrane among the (cytoplasm).

[4][5] Gloeobacter violaceus produces several pigments, including chlorophyll a, β-carotene, oscillol diglycoside, and echinenone.

[5] Gloeobacter violaceus was found on a limestone rock in the Swiss canton Obwalden.

[5] Anthocerotibacter panamensis, found in a sample of hornwort from a rainforest in Panama, also lacks thylakoids.

Saw et al. 2014 G. violaceus Rippka, Waterbury & Cohen-Bazire 1974 Aphanocapsa lilacina Miscoe and Johansen 2016 G. morelensis Saw, Cardona & Montejano 2021