In Hawai'i, Lynbya majuscula is probably our most common marine species. Bacterial organization . Chlorophyll a and phycobilins assembled as a phycobilisome on thylakoid membranes. There are no chloroplasts. A few species remain as unicells but show no sexual reproduction.
Filaments occur when trichomes are surrounded by a sheath.
Take a look at this sampling of Cyanophytes . Simple cell construction. There is no sexual reproduction cycle know for this alga. Anacystis Coccochloris Agmenellum All of these genera reproduce asexually. All of these genera reproduce asexually Most complex morphology result in the most advanced order, the Order Stigonematales.