Prototheca
| Prototheca | |
|---|---|
| Prototheca wickerhamii, with Gram stain | |
| Scientific classification | |
| Clade: | Viridiplantae | 
| Division: | Chlorophyta | 
| Class: | Trebouxiophyceae | 
| Order: | Chlorellales | 
| Family: | Chlorellaceae | 
| Genus: | Prototheca Krüger, 1894 | 
| Species | |
| 
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Prototheca is a genus of algae in the family Chlorellaceae. While this genus is a member of the green algae, all Prototheca no longer have chloroplasts and therefore their photosynthetic ability. Some species can cause protothecosis in humans and various vertebrates.