| Sl No. | Family Name |
|---|---|
| 1 | Neochloridaceae |
| 2 | Pleurosigmataceae |
| 3 | Selenastraceae |
| 4 | Stephanodiscaceae |
| 5 | Stigonemataceae |
| 6 | Tolypothrichaceae |
| 7 | Trichocoleusaceae |
| 8 | Uronemataceae |
| 9 | Volvocaceae |
| 10 | Aphanizomenonaceae |
| 11 | Batrachospermaceae |
| 12 | Chaetosphaeridiaceae |
| 13 | Chamaesiphonaceae |
| 14 | Chroococcaceae |
| 15 | Diploneidaceae |
| 16 | Fragilariaceae |
| 17 | Mastogloiaceae |
| 18 | Microcoleaceae |
| 19 | Neidiaceae |
| 20 | Oedogoniaceae |
| 21 | Oocystaceae |
| 22 | Pinnulariaceae |
| 23 | Spondylomoraceae |
| 24 | Stauroneidaceae |
| 25 | Tabellariaceae |
| 26 | Thalassiosiraceae |
| 27 | Ulnariaceae |
| 28 | Watanabeaceae |
| 29 | Anomoeoneidaceae |
| 30 | Trebouxiophyceae |
| 31 | Achnanthidiaceae |
| 32 | Acrochaetiaceae |
| 33 | Aliterellaceae |
| 34 | Amphipleuraceae |
| 35 | Aphanizomenonaceae |
| 36 | Aphanochaetaceae |
| 37 | Astasiidae/Euglenaceae |
| 38 | Aulacoseiraceae |
| 39 | Bacillariaceae |
| 40 | Bacillariophyta |
| 41 | Botryococcaceae |
| 42 | Bracteacoccaceae |
| 43 | Carteriaceae |
| 44 | Chaetopeltidaceae |
| 45 | Chaetophoraceae |
| 46 | Characeae |
| 47 | Characiaceae |
| 48 | Chlamydomonadaceae |
| 49 | Chlorellaceae |
| 50 | Chlorochytriaceae |
| 51 | Chlorococcaceae |
| 52 | Chlorodendraceae |
| 53 | Chroococcaceae |
| 54 | Cladophoraceae |
| 55 | Closteriaceae |
| 56 | Coccomyxaceae |
| 57 | Cocconeidaceae |
| 58 | Coelosphaeriaceae |
| 59 | Coleochaetaceae |
| 60 | Coleofasciculace |
| 61 | Compsopogonaceae |
| 62 | Cyanobacteriaceae |
| 63 | Cyanothrichaceae |
| 64 | Cylindrocapsaceae |
| 65 | Cymatolegaceae |
| 66 | Cymbellaceae |
| 67 | Dermocarpellaceae |
| 68 | Desmidiaceae |
| 69 | Diadesmidaceae |
| 70 | Dichotomosiphonaceae |
| 71 | Entomoneidaceae |
| 72 | Eremosphaeraceae |
| 73 | Euglenaceace |
| 74 | Eunotiaceae |
| 75 | Fritschiellaceae |
| 76 | Geitlerinemataceae |
| 77 | Glaucocystaceae |
| 78 | Gomontiellaceae |
| 79 | Gomphonemataceae |
| 80 | Gomphosphaeriaceae |
| 81 | Goniaceae |
| 82 | Grammatophoraceae |
| 83 | Gymnodiniaceae |
| 84 | Haematococcaceae |
| 85 | Hapalosiphonaceae |
| 86 | Heteroscytonemataceae |
| 87 | Hydrodictyaceae |
| 88 | Klebsormidiaceae |
| 89 | Leptobasaceae |
| 90 | Leptolyngbyaceae |
| 91 | Melosiraceae |
| 92 | Merismopediaceae |
| 93 | Microcoleaceae |
| 94 | Microcystaceae |
| 95 | Microsporaceae |
| 96 | Microthamniaceae |
| 97 | Mychonastaceae |
| 98 | Naviculaceae |
| 99 | Nephrocytiaceae |
| 100 | Nodulariaceae |
| 101 | Nostocaceae |
| 102 | Ochromonadaceae |
| 103 | Oscillatoriaceae |
| 104 | Palmellaceae |
| 105 | Palmellopsidaceae |
| 106 | Phacaceae |
| 107 | Phacotaceae |
| 108 | Pithophoraceae |
| 109 | Pleurastraceae |
| 110 | Pleurocapsaceae |
| 111 | Prasiolaceae |
| 112 | Protosiphonaceae |
| 113 | Pseudanabaenaceae |
| 114 | Radiococcaceae |
| 115 | Rhoicospheniaceae |
| 116 | Rivulariaceae |
| 117 | Scenedesmaceae |
| 118 | Schizomeridaceae |
| 119 | Schroederiaceae |
| 120 | Scotinosphaeraceae |
| 121 | Scytonemataceae |
| 122 | Selenastraceae |
| 123 | Sellaphoraceae |
| 124 | Serritaeniaceae |
| 125 | Sphaerocystidaceae |
| 126 | Sphaeropleaceae |
| 127 | Sphaeropleales |
| 128 | Spirogyraceae |
| 129 | Spirulinaceae |
| 130 | Staurosiraceae |
| 131 | Stichococcaceae |
| 132 | Stigonemataceae |
| 133 | Surirellaceae |
| 134 | Tetrabaenaceae |
| 135 | Tetrasporaceae |
| 136 | Thoreaceae |
| 137 | Tovelliaceae |
| 138 | Trebouxiaceae |
| 139 | Trentepohliaceae |
| 140 | Trichocoleusaceae |
| 141 | Ulotrichaceae |
| 142 | Ulvaceae |
| 143 | Vaucheriaceae |
| 144 | Wilmottiaceae |
| 145 | Zygnemataceae |
