Azolla rubra, known commonly as red azolla and Pacific azolla, is a species of aquatic fern native to Australia and New Zealand.[1] In New Zealand, it is also known by its Māori names returetu, roturotu, kārearea and kārerarera.[citation needed]
Forms extensive red mats on slow moving bodies of water such as streams, lakes, ponds and swamps. May also occur on man-made water bodies such as farm ponds, drains, ditches, dams and cattle troughs.[2]
^Reid, Jill D.; Plunkett, Gregory M.; Peters, Gerald A. (May 2006). "Phylogenetic Relationships in the Heterosporous Fern Genus Azolla (Azollaceae) Based on DNA Sequence Data from Three Noncoding Regions". International Journal of Plant Sciences. 167 (3): 529–538. doi:10.1086/501071. ISSN1058-5893.
