Some proposals for a new classification system of the Cryptophyceae

Comments are made on some existing classification systems of the Cryptophyceae. A new system is also proposed. This allows for the existence of three orders, four families, seven pigmented genera and two colourless ones. Formal diagnoses are given of the Cryptophyceae classis emendata, Pyrenomonadales ord. nov., Pyrenomonadaceae fam. nov. and Cryptomonadales ord. nov. A new name is proposed, Goniomonadales stat. et nom. nov. Most diagnoses or descriptions of taxa above the generic level are based on only one character. This could make the system capable of accommodating new genera with little difficulty.