| [1791] Mentha aquatica | Appellations de Taxon | 1791 |
| [17910] Platessa obscura | Appellations de Taxon | 17910 |
| [17911] Planothidium oculatum | Appellations de Taxon | 17911 |
| [17912] Planothidium oestrupii | Appellations de Taxon | 17912 |
| [17913] Pinnularia tolottiana | Appellations de Taxon | 17913 |
| [17914] Pinnularia trudis | Appellations de Taxon | 17914 |
| [17915] Pinnularia trevelyana | Appellations de Taxon | 17915 |
| [17916] Pinnularia tenuirugosa | Appellations de Taxon | 17916 |
| [17917] Pinnularia termitina | Appellations de Taxon | 17917 |
| [17918] Pseudostaurosira trainorii | Appellations de Taxon | 17918 |
| [17919] Proboscia truncata | Appellations de Taxon | 17919 |
| [1792] Mentha rotundifolia | Appellations de Taxon | 1792 |
| [17920] Pinnularia transversiformis | Appellations de Taxon | 17920 |
| [17921] Pinnularia superba | Appellations de Taxon | 17921 |
| [17922] Placoneis surinamensis | Appellations de Taxon | 17922 |
| [17923] Pinnularia subumbrosa var. simplicissima | Appellations de Taxon | 17923 |
| [17924] Pinnularia subviridis | Appellations de Taxon | 17924 |
| [17925] Pinnularia silviasalae | Appellations de Taxon | 17925 |
| [17926] Placoneis symmetrica | Appellations de Taxon | 17926 |
| [17927] Pinnularia semizebra | Appellations de Taxon | 17927 |
| [17928] Planothidium delicatulum | Appellations de Taxon | 17928 |
| [17929] Planothidium dispar | Appellations de Taxon | 17929 |
| [1793] Mentha sylvestris | Appellations de Taxon | 1793 |
| [17930] Planothidium dubium | Appellations de Taxon | 17930 |
| [17931] Planothidium ellipticum | Appellations de Taxon | 17931 |
| [17932] Pseudostaurosira tenuis | Appellations de Taxon | 17932 |
| [17933] Planothidium fragilarioides | Appellations de Taxon | 17933 |
| [17934] Pinnularia tirolensis var. tirolensis | Appellations de Taxon | 17934 |
| [17935] Pinnularia tirolensis var. julma | Appellations de Taxon | 17935 |
| [17936] Protokeelia aculeata | Appellations de Taxon | 17936 |
| [17937] Planothidium lanceolatum | Appellations de Taxon | 17937 |
| [17938] Planothidium lanceolatum abnormal form | Appellations de Taxon | 17938 |
| [17939] Planothidium marginostriatum | Appellations de Taxon | 17939 |
| [1794] Mentha viridis | Appellations de Taxon | 1794 |
| [17940] Placoneis tumidula | Appellations de Taxon | 17940 |
| [17941] Pinnularia torganae | Appellations de Taxon | 17941 |
| [17942] Pinnularia toscana | Appellations de Taxon | 17942 |
| [17943] Protoraphis atlantica | Appellations de Taxon | 17943 |
| [17944] Planothidium peragalloi | Appellations de Taxon | 17944 |
| [17945] Planothidium polaris | Appellations de Taxon | 17945 |
| [17946] Planothidium quarnerensis | Appellations de Taxon | 17946 |
| [17947] Psammothidium therezienii | Appellations de Taxon | 17947 |
| [17948] Planothidium septentrionalis | Appellations de Taxon | 17948 |
| [17949] Pinnularia tsoneka | Appellations de Taxon | 17949 |
| [1795] Scutellaria | Appellations de Taxon | 1795 |
| [17950] Parlibellus tubulosa | Appellations de Taxon | 17950 |
| [17951] Pinnularia turfosiphila | Appellations de Taxon | 17951 |
| [17952] Pinnularia tumescens | Appellations de Taxon | 17952 |
| [17953] Pinnularia turbulenta | Appellations de Taxon | 17953 |
| [17954] Pinnularia undula var. cuneata | Appellations de Taxon | 17954 |