Petalonema
# Petalonema

Petalonema is a genus of cyanobacteria. These species occur in freshwater habitats, on rocks, in soil, and as epiphytes.

Species include:

* Petalonema alatum
* Petalonema crassum
* Petalonema crustaceum
* Petalonema densum
* Petalonema fluminalis
* Petalonema incrustans
* Petalonema involvens
* Petalonema pulchrum
* Petalonema velutinum
