Vaucheria
- Photographs of the filaments of this freshwater species with its description and information on its biology.
- http://www-biol.paisley.ac.uk/bioref/Chromista/Vaucheria.html

Botrydium granulatum
- Several images of this yellow-green alga growing on drying mud and also enlarged images of the thalli.
- http://www.bioimages.org.uk/HTML/R152736.HTM

Characiopsis naegelii
- Image of this species epiphytic on Daphnia, provided by AlgaeVision.
- http://www.nhm.ac.uk/research-curation/projects/algaevision/database/detail.jsp?taxon=&imageID=1851&GenusName=Characiopsis&SpeciesName=naegelii

Introduction to the Xanthophyta: Yellow-Green Algae
- Brief discussion of the biology and ecology of this group of photosynthetic organisms which live primarily in freshwater, but also are found in marine waters, on damp soil or on tree trunks.
- http://www.ucmp.berkeley.edu/chromista/xanthophyta.html