''Cetrariopsis'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

foliose lichen A foliose lichen is a lichen with flat, leaf-like , which are generally not firmly bonded to the substrate on which it grows. It is one of the three most common growth forms of lichens. It typically has distinct upper and lower surfaces, each o ...

s in the large family

Parmeliaceae The Parmeliaceae is a large and diverse family of Lecanoromycetes. With over 2700 species in 71 genera, it is the largest family of lichen-forming fungi. The most speciose genera in the family are the well-known groups: '' Xanthoparmelia'' ( 82 ...

. The genus contains three species, including the

type Type may refer to: Science and technology Computing * Typing, producing text via a keyboard, typewriter, etc. * Data type, collection of values used for computations. * File type * TYPE (DOS command), a command to display contents of a file. * ...

, '' Cetrariopsis wallichiana''.

Taxonomy

''Cetrariopsis'' was

circumscribed In geometry, a circumscribed circle for a set of points is a circle passing through each of them. Such a circle is said to ''circumscribe'' the points or a polygon formed from them; such a polygon is said to be ''inscribed'' in the circle. * Circum ...

by Japanese lichenologist Syo Kurokawa in 1980. The type species was originally called ''Sticta wallichiana'' by

Thomas Taylor Thomas Taylor may refer to: Military *Thomas H. Taylor (1825–1901), Confederate States Army colonel *Thomas Happer Taylor (1934–2017), U.S. Army officer; military historian and author; triathlete *Thomas Taylor (Medal of Honor) (born 1834), Am ...

, who described it in 1847. In 2017, Divakar and colleagues used a recently developed "temporal phylogenetic" approach to identify temporal bands for specific taxonomic ranks in the family Parmeliaceae, suggesting that groups of species that diverged within the time window of 29.45–32.55 million years ago represent genera. They proposed to synonymize ''Cetrariopsis'' with '' Nephromopsis'', along with several other Parmelioid genera, so that all the genera within the Parmeliaceae are about the same age. Although some of their proposed taxonomic changes were accepted, the synonymization of the Parmelioid genera with ''Nephromopsis'' was not accepted in a recent analysis.

Species

*'' Cetrariopsis lai'' A.Thell & Randlane (1995) *'' Cetrariopsis pallescens'' (Schaer.) A.Thell & Randlane (1995) *'' Cetrariopsis wallichiana'' (Taylor) Kurok. (1980)

References

Parmeliaceae Lecanorales genera Lichen genera Taxa described in 1980 Taxa named by Syo Kurokawa {{Parmeliaceae-stub