| [11020] Amphora marina | Appellations de Taxon | 11020 |
| [11021] Achnanthes minima | Appellations de Taxon | 11021 |
| [11022] Amphora minima | Appellations de Taxon | 11022 |
| [11023] Adlafia minuscula abnormal form | Appellations de Taxon | 11023 |
| [11024] Amphora oblonga | Appellations de Taxon | 11024 |
| [11025] Amphora pusio | Appellations de Taxon | 11025 |
| [11026] Amphora reniformis | Appellations de Taxon | 11026 |
| [11027] Amphora rhombica | Appellations de Taxon | 11027 |
| [11028] Achnanthes marina | Appellations de Taxon | 11028 |
| [11029] Asterolampra marylandica | Appellations de Taxon | 11029 |
| [1103] Aphanizomenon | Appellations de Taxon | 1103 |
| [11030] Amphora semperpalorum | Appellations de Taxon | 11030 |
| [11031] Amphora scutella | Appellations de Taxon | 11031 |
| [11032] Achnanthes minutissima-type | Appellations de Taxon | 11032 |
| [11033] Aneumastus metzeltinii | Appellations de Taxon | 11033 |
| [11034] Afrocymbella muelleri var. acuminata | Appellations de Taxon | 11034 |
| [11035] Achnanthes muelleri | Appellations de Taxon | 11035 |
| [11036] Adlafia multnomahii | Appellations de Taxon | 11036 |
| [11038] Adlafia muscora | Appellations de Taxon | 11038 |
| [11039] Actinodiscus mutabilis | Appellations de Taxon | 11039 |
| [1104] Cylindrospermum | Appellations de Taxon | 1104 |
| [11040] Anaulus balticus | Appellations de Taxon | 11040 |
| [11041] Aneumastus carolinianus | Appellations de Taxon | 11041 |
| [11042] Achnanthes neocaledonica | Appellations de Taxon | 11042 |
| [11043] Anomoeoneis costata | Appellations de Taxon | 11043 |
| [11044] Amphora neglecta f. densestriata | Appellations de Taxon | 11044 |
| [11045] Anorthoneis hummii | Appellations de Taxon | 11045 |
| [11046] Anorthoneis hyalina | Appellations de Taxon | 11046 |
| [11047] Anorthoneis eurystoma | Appellations de Taxon | 11047 |
| [11048] Aneumastus ohridanus | Appellations de Taxon | 11048 |
| [11049] Achnanthes nolli | Appellations de Taxon | 11049 |
| [1105] Nostoc | Appellations de Taxon | 1105 |
| [11050] Anorthoneis pulex | Appellations de Taxon | 11050 |
| [11051] Aneumastus rhombicus | Appellations de Taxon | 11051 |
| [11052] Ardissonea robusta | Appellations de Taxon | 11052 |
| [11053] Archaegladiopsis jackii | Appellations de Taxon | 11053 |
| [11054] Araniscus lewisianus | Appellations de Taxon | 11054 |
| [11055] Amphora reniformis | Appellations de Taxon | 11055 |
| [11056] Asteromphalus robustus | Appellations de Taxon | 11056 |
| [11057] Actinocyclus roperi | Appellations de Taxon | 11057 |
| [11058] Arachnoidiscus ornatus | Appellations de Taxon | 11058 |
| [11059] Aneumastus rostratus | Appellations de Taxon | 11059 |
| [1106] Oscillatoriaceae | Appellations de Taxon | 1106 |
| [11060] Amphora normanii var. undulata | Appellations de Taxon | 11060 |
| [11061] Azpeitia nodulifera f. variantia | Appellations de Taxon | 11061 |
| [11062] Anorthoneis vortex | Appellations de Taxon | 11062 |
| [11063] Aulacoseira nyassensis | Appellations de Taxon | 11063 |
| [11064] Achnanthes obliqua | Appellations de Taxon | 11064 |
| [11065] Amphora obtusa | Appellations de Taxon | 11065 |
| [11066] Amphora ocellata | Appellations de Taxon | 11066 |