# Smith system

A system of taxonomy of the cryptogams, the Smith system was published in:
    Smith, G.M. (1938). Cryptogamic Botany, vol. 1. Algae and fungi. McGraw-Hill, New York.
    Smith, G.M. (1955). Cryptogamic Botany, vol. 2. Bryophytes and pteridophytes. 2nd ed. McGraw-Hill, New York.

## Division Chlorophyta

* Class 1. Chlorophyceae
      * Order 1. Volvocales
            * Family 1. Chlamydomonadaceae
            * Family 2. Volvocaceae
      * Order 2. Tetrasporales
      * Order 3. Ulotrichales
            * Family 1. Ulotrichaceae
            * Family 2. Microsporaceae
            * Family 3. Cylindrocapsaceae
            * Family 4. Chaetophoraceae
            * Family 5. Protococcaceae
            * Family 6. Coleochaetaceae
            * Family 7. Trentepohliaceae
      * Order 4. Ulvales
            * Family 1. Ulvaceae
            * Family 2 Schizomeridaceae
      * Order 5. Schizogoniales
            * Family Schizogoniaceae
      * Order 6. Cladophorales
            * Family 1. Cladophoraceae
            * Family 2. Sphaeropleaceae
      * Order 7. Oedogoniales
            * Family Oedogoniaceae
      * Order 8. Zygnematales
            * Family 1. Zygnemataceae
            * Family 2. Mesotaeniaceae
            * Family 3. Desmidiaceae
      * Order 9. Chlorococcales
            * Family 1. Chlorococcaceae
            * Family 2. Endosphaeraceae
            * Family 3. Characiaceae
            * Family 4. Protosiphonaceae
            * Family 5. Hydrodictyaceae
            * Family 6. Oöcystaceae
            * Family 7. Scenedesmaceae
      * Order 10. Siphonales
            * Family 1. Bryopsidaceae
            * Family 2. Caulerpaceae
            * Family 3. Halicystaceae
            * Family 4. Codiaceae
            * Family 5. Derbesiaceae
            * Family 6. Vaucheriaceae
            * Family 7. Phyllosiphonaceae
      * Order 11. Siphonocladiales
            * Family 1. Valoniaceae
            * Family 2. Dasycladaceae
* Class 2. Charophyceae
      * Order Charales
            * Family Characeae

## Division Euglenophyta

      * Order 1. Euglenales
      * Order 2. Colaciales (Euglenocapsales)

## Division Pyrrophyta

* Class 1. Cryptophyceae
* Class 2. Desmokontae
* Class 3. Dinophyceae
      * Order 1. Gymnodiniales
      * Order 2. Peridiniales
      * Order 3. Dinophysidales
      * Order 4. Rhyzodiniales
      * Order 5. Dinocapsales
      * Order 6. Dinotrichales
      * Order 7. Dinococcales

## Division Chrysophyta

* Class 1. Xanthophyceae (Heterokontae)
      * Order 1. Heterochloridales
      * Order 2. Rhizochloridales
      * Order 3. Heterocapsales
      * Order 4. Heterotrichales
      * Order 5. Heterococcales
      * Order 6. Heterosiphonales
* Class 2. Chrysophyceae
      * Order 1. Chrysomonadales
         * Suborder 1. Cromulinae
         * Suborder 2. Isochrysidineae
         * Suborder 3. Ochromonadineae
      * Order 2. Rhizochrysidales
      * Order 3. Chrysocapsales
      * Order 4. Chrysotrichales
      * Order 5. Chrysosphaerales
* Class 3. Bacillariophyceae
      * Order 1. Centrales
      * Order 2. Pennales

## Division Phaeophyta

* Class 1. Isogeneratae
      * Order 1. Ectocarpales
      * Order 2. Sphacelariales
      * Order 3. Tilopteridales
      * Order 4. Cutleriales
      * Order 5. Dictyotales
* Class 2. Heterogeneratae
   * Subclass 1. Haplostichineae
      * Order 1. Chordariales
      * Order 2. Sporochnales
      * Order 3. Desmarestiales
   * Subclass 2. Polystichineae
      * Order 1. Punctariales
      * Order 2. Dictyosiphonales
      * Order 3. Laminariales
* Class 3. Cyclosporeae
      * Order Fucales

## Division Cyanophyta

* Class Myxophyceae (Cyanophyceae)
      * Order 1. Chroococcales
      * Order 2. Chamaesiphonales
      * Order 3. Hormogonales

## Division Rhodophyta

* Class Rhodophyceae
   * Subclass 1. Bangioideae
      * Order Bangiales
   * Subclass 2. Florideae
      * Order 1. Nemalionales
      * Order 2. Gelidiales
      * Order 3. Cryptonemiales
      * Order 4. Gigartinales
      * Order 5. Rhodymeniales
      * Order 6. Ceramiales

## Division Myxothallophyta

* Class 1. Myxomycetae
   * Subclass 1. Endosporeae
   * Subclass 2. Exosporeae
* Class 2. Phytomyxinae
* Class 3. Acrasieae

## Division Eumycetae

* Class 1. Phycomycetae
      * Order 1. Chytridiales
            * Family 1. Rhizidiaceae
            * Family 2. Olpidiaceae
            * Family 3. Synchytriaceae
            * Family 4. Cladochytriaceae
            * Family 5. Woroninaceae
      * Order 2. Blastocladiales
      * Order 3. Monoblepharidales
      * Order 4. Ancylistales
      * Order 5. Saprolegniales
            * Family 1. Saprolegniaceae
            * Family 2. Leptomitaceae
            * Family 3. Pythiaceae
      * Order 6. Peronosporales
      * Order 7. Mucorales
      * Order 8. Entomophthorales
* Class 2. Ascomycetae
   * Subclass 1. Protoascomycetae
   * Subclass 2. Euascomycetae
      * Order 1. Aspergillales
      * Order 2. Erysiphales
      * Order 3. Hysteriales
      * Order 4. Phacidiales
      * Order 5. Pezizales
      * Order 6. Tuberales
      * Order 7. Helvellales
      * Order 8. Exoascales
      * Order 9. Hypocreales
      * Order 10. Sphaeriales
      * Order 11. Dothidiales
      * Order 12. Laboulbeniales
* Class 3. Basidiomycetae
   * Subclass 1. Eubasidii
      * Order 1. Agaricales (Hymenomyceatae)
      * Order 2. Lycoperdales (Gasteromycetae)
      * Order 3. Dacryomycetales
      * Order 4. Tremellales
      * Order 5. Auriculariales
   * Subclass 2. Hemibasidii
      * Order 1. Urediniales
      * Order 2. Ustilaginales
            * Family 1. Ustilaginaceae
            * Family 2. Tilletiaceae
* Class 4. Fungi imperfecti
* Lichens
   * Subclass 1. Ascholichenes
   * Subclass 2. Basidiolichenes

## Division Bryophyta

* Class 1. Hepaticae (liverworts)
      * Order 1. Sphaerocarpales
            * Family 1. Sphaerocarpaceae
            * Family 2. Riellaceae
      * Order 2. Marchantiales
            * Family 1. Ricciaceae
            * Family 2. Corsiniaceae
            * Family 3. Targioniaceae
            * Family 4. Monocleaceae
            * Family 5. Marchantiaceae
      * Order 3. Jungermanniales
         * Suborder 1. Metzgerineae
         * Suborder 2. Jungermannineae
      * Order 4. Calobryales
* Class 2. Anthocerotae (hornworts)
      * Order 1. Anthocerotales
* Class 3. Musci (mosses)
   * Subclass 1. Sphagnobrya
   * Subclass 2. Andreaeobrya
   * Subclass 3. Eubrya

## Division Psilophyta

* Class 1. Psilophytinae (psilophytes)
      * Order 1. Psilophytales
            * Family 1. Rhyniaceae
            * Family 2. Psilophytaceae
            * Family 3. Pseudosporochnaceae
            * Family 4. Zosterophyllaceae
            * Family 5. Asteroxylaceae
      * Order 2. Psilotales

## Division Lepidophyta

* Class 1. Lycopodinae (lycopods)
      * Order 1. Lycopodiales
            * Family 1. Protolepidodendraceae
            * Family 2. Lycopodiaceae
      * Order 2. Selaginellales
            * Family 1. Selaginellaceae
            * Family 2. Miadesmiaceae
      * Order 3. Lepidodendrales
            * Family 1. Lepidodendraceae
            * Family 2. Lepidocarpaceae
            * Family 3. Bothrodendraceae
            * Family 4. Sigillariaceae
      * Order 4. Isoetales
            * Family 1. Pleuromeiaceae
            * Family 2. Isoetaceae

## Division Calamophyta

* Class 1. Equisetinae (horsetails)
      * Order 1. Hyeniales
      * Order 2. Sphenophyllales
      * Order 3. Equisetales
            * Family 1. Calamitaceae
            * Family 2. Equisetaceae

## Division Pterophyta

* Class 1. Filicinae (ferns)
   * Subclass 1. Primofilices (or Inversicatenales, Coenopterideae, Palaeopteridales)
      * Order 1. Protopteridales
            * Family 1. Protopteridaceae
            * Family 2. Cladoxylaceae
      * Order 2. Coenopteridales
            * Family 1. Zygopteridaceae
            * Family 2. Botryopteridaceae
            * Family 3. Anachoropteridaceae
      * Order 3. Archaeopteridales
   * Subclass 2. Eusporangitae
      * Order 1. Ophioglossales
      * Order 2. Marattiales
   * Subclass 3. Leptosporangiatae
      * Order 1. Filicales
            * Family 1. Osmundaceae
            * Family 2. Schizaeaceae
            * Family 3. Gleicheniaceae
            * Family 4. Matoniaceae
            * Family 5. Dipteridaceae
            * Family 6. Hymenophyllaceae
            * Family 7. Cyatheaceae
            * Family 8. Dicksoniaceae
            * Family 9. Polypodiaceae
            * Family 10. Parkeriaceae
      * Order 2. Marsileales
      * Order 3. Salviniales