The genera Chrysococcus, Kephyrion, Pseudokephyrion and Stonokalyx have received some consideration by investigators in Europe and in the boreal forest and tundra-range regions of the United States. Many of the species are considered to be cold-water stenotherms, thus occurring more frequently in northern habitats. In the present paper 4 species of Chrysococcus, 4 species of Kephyroin, 2 species of Pseudokephyrion and 2 species of Stenokalyx from Arkansas are discussed.
Meyer, Richard L.
"Notes on the Algae of Arkansas. 1. Chrysococcus, Kephyrion, Kephyriopsis, Pseudokephyrion and Stenokalyx,"
Journal of the Arkansas Academy of Science: Vol. 25
, Article 12.
Available at: http://scholarworks.uark.edu/jaas/vol25/iss1/12