| Trochiscia hamzaoglui | Trochiscia granulate | Trochiscia verrucosa | Trochiscia hystrix | Trochiscia planctonica |
Habitat | planktonic | planktonic | epiphytic + planktonic | epiphytic + planktonic | planktonic |
Cell type | spherical unicellular | spherical | discoid | spherical | discoid |
Diameter (µm) | 35 - 52 | 20 - 35 | 32 - 40 | 42 - 63 | 48 - 70 |
Pyrenoid | several | several | big one | small one | several |
Nuclei | one or several | several | one | one | one |
Spine length (µm) | 3 - 5 | 2 - 4 | 8 - 12 | 4 - 7 | 8 - 13 |
Spine type | sharp | soft and smooth | long , sitrict | sharp, thornlike | soft and long |
Mucilage thickness (µm) | 2 - 5 | 1 - 3 | 6 - 8 | 2 - 3 | 4 - 6 |
Reproduction | protoplast division or autospore and zoospore | protoplast division | autospore and zoospore | protoplast division or autospore and zoospore | protoplast division |
Color of species | Light green | Green | Green | Green | Light green |