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The genus Lepocinclis was firstly proposed by Perty 1852 from Germany. Afterward, France 1897 from Hungary, and Lemmermann 1901, 1913 observed some new species from various regions in Europe. Since then more new taxa were found successively by many authors worldwide.
Conrad 1934, 1935 was the first to produce a taxonomical and monographic study of 78 taxa including many new forms in this genus. Huber-pestalozzi 1955 recorded 40 species and 48 varieties. Also Starmach 1983 and many authors worldwide recorded 50 species so far and other many varieties respectively. Yamagishi 1992 reported 29 taxa of this genus from Taiwan in a floristic study of that area. Furthermore, Yamagishi 2010 observed 28 taxa in many samples collected from Southeast Asia. Later, Yamagishi 1989-1998, in Yamagishi and Akiyama recorded 34 forms of this genus from Japan New Guinea and Taiwan.
This book deals with the taxonomical review of about 150 taxa described in this genus since Perty 1852, Lemmermann 1901 and those recorded in the monograph by Conrad 1934, 1935, Huber-Pestalozzi 1955, and Starmach 1983. Many photographs of about 80 taxa observed so far and made available by authors of previous works are used in this study for reexamination with the original figures of each taxon. Also the morphological stability of the cell shape and cell dimensions is observed upon comparing with the photographs of many specimens.
2. Taxonomic criteria
3. Taxonomical review