<P> According to Smith (1938): </P> <Ul> <Li> Class Chrysophyceae <Ul> <Li> Order Chrysomonadales <Ul> <Li> Suborder Cromulinae (e.g., Mallomonas) </Li> <Li> Suborder Isochrysidineae (e.g., Synura) </Li> <Li> Suborder Ochromonadineae (e.g., Dinobryon) </Li> </Ul> </Li> <Li> Order Rhizochrysidales (e.g., Chrysamoeba) </Li> <Li> Order Chrysocapsales (e.g., Hydrurus) </Li> <Li> Order Chrysotrichales (e.g., Phaeothamnion) </Li> <Li> Order Chrysosphaerales (e.g., Epichrysis) </Li> </Ul> </Li> </Ul> <Li> Class Chrysophyceae <Ul> <Li> Order Chrysomonadales <Ul> <Li> Suborder Cromulinae (e.g., Mallomonas) </Li> <Li> Suborder Isochrysidineae (e.g., Synura) </Li> <Li> Suborder Ochromonadineae (e.g., Dinobryon) </Li> </Ul> </Li> <Li> Order Rhizochrysidales (e.g., Chrysamoeba) </Li> <Li> Order Chrysocapsales (e.g., Hydrurus) </Li> <Li> Order Chrysotrichales (e.g., Phaeothamnion) </Li> <Li> Order Chrysosphaerales (e.g., Epichrysis) </Li> </Ul> </Li> <Ul> <Li> Order Chrysomonadales <Ul> <Li> Suborder Cromulinae (e.g., Mallomonas) </Li> <Li> Suborder Isochrysidineae (e.g., Synura) </Li> <Li> Suborder Ochromonadineae (e.g., Dinobryon) </Li> </Ul> </Li> <Li> Order Rhizochrysidales (e.g., Chrysamoeba) </Li> <Li> Order Chrysocapsales (e.g., Hydrurus) </Li> <Li> Order Chrysotrichales (e.g., Phaeothamnion) </Li> <Li> Order Chrysosphaerales (e.g., Epichrysis) </Li> </Ul>

Why diatoms and golden algae are called as desmids