Lithothamnion
| Lithothamnion Temporal range: | |
|---|---|
| L. glaciale showing conceptacles. Millimetre scale | |
| Scientific classification | |
| Clade: | Archaeplastida |
| Division: | Rhodophyta |
| Class: | Florideophyceae |
| Order: | Corallinales |
| Family: | Hapalidiaceae |
| Genus: | Lithothamnion Heydrich, 1897 |
Lithothamnion is a genus of thalloid red alga comprising 103 species. Its members are known by a number of common names. The monomerous, crustose thalli are composed of a single system of filaments which grow close to the underlying surface. Lithothamnion reproduces by means of multiporate conceptacles.