1. Cells with reticulate ornamentation without mucilaginous envelope. | 2 |
1.Cells with reticulate ornamentation and mucilaginous envelope, often within short pines | 3 |
2.Cells with reticulate on surface and surface granules | Trochiscia granulate |
2.Cells with reticulate on surface and including long spines and papilla | 4 |
3.Cells with reticulate on surface covered with mucilage and short sharp spines | Trochiscia hamzaoglui |
3.Cell with reticulate covered with fine short spines and wide spines like thorn | Trochiscia verrucosa |
4.Cells with reticulate ornamentation and long spines including lots of pyrenoid | Trochiscia hystrix |
4.Cells with reticulate covered papillae, often within a thin mucilaginous envelope | Trochiscia planctonica |