False Yeast Fungus (Rhodotorula glutinis)
- Microscopic image of this species.
- http://www.denniskunkel.com/product_info.php?products_id=69

Rhodotorula Species
- Description and natural habitat of this genus of yeasts, which lack pseudohyphae and hyphae, and their macroscopic and microscopic features.
- http://www.doctorfungus.org/thefungi/rhodotorula.htm

Umbilicaria cylindra
- A photograph of this species in its natural habitat.
- http://plantbiology.unibas.ch/people/redecker/valbella_web/pages/umbilicaria_cylDSCN2516.htm

Umbilicaria polyphylla (a lichen)
- Two photographs of the thalli of this species.
- http://www.bioimages.org.uk/HTML/R151737.HTM

Umbilicaria cylindrica (a lichen)
- Two photographs of the thalli of this species.
- http://www.bioimages.org.uk/html/R151738.HTM

Cystofilobasidiales, a New Order of Basidiomycetous Yeasts
- Describes the characteristics of this order. rDNA sequence analysis indicates a monophyletic branch within the Tremellomycetidae of the Hymenomycetes
- http://ijs.sgmjournals.org/cgi/content/abstract/49/2/907

Sequences of Psychrophylic Fungi Amplified from Glacier Preserved Ascolichens
- Outlines DNA research into subfossil specimens of the ascholichen, Umbilicaria cylindrica, obtained from the meltwater of a Greenland glacier.
- http://www.botany.wisc.edu/gargas/depriest1450.pdf