Aizopsis Explained

Aizopsis is a genus of the succulent family Crassulaceae (stonecrop family), found in east Asia.

Description

Flowers yellow, chromosome numbers, x=16.

Taxonomy

In 1978, Ohba divided up the very large and cosmopolitan genus Sedum, placing Sedum aizoon and allied species into Sedum subgenus Aizoon. In 1995, he segregated these species into a separate genus, Aizopsis. However, other authors included these species in another segregate, Phedimus, as subgenus Aizoon. Subsequent molecular phylogenetic analysis established Aizopsis as a sister group to Phedimus, which with distinguishing characteristics justified their retention as a separate genus, although the distinction has not been universally adopted.

Distribution

East Asia

Bibliography

• Book: Hart . H. 't . Eggli . U. . Evolution and systematics of the Crassulaceae (23rd Congress of the International Organization for Succulent Plant Study, Wageningen, Netherlands, August 20th, 1994) . 1995 . Backhuys . Leiden . 978-9073348462. 34335028 .
• Book: Thiede . J . Eggli . U. Kubitzki . Klaus. Klaus Kubitzki . Berberidopsidales, Buxales, Crossosomatales, Fabales p.p., Geraniales, Gunnerales, Myrtales p.p., Proteales, Saxifragales, Vitales, Zygophyllales, Clusiaceae Alliance, Passifloraceae Alliance, Dilleniaceae, Huaceae, Picramniaceae, Sabiaceae . 2007 . Crassulaceae. 83–119. https://books.google.com/books?id=PdSL7jBNX9EC&pg=PA83 . 978-3540322146. (full text at ResearchGate)
• Gontcharova . S. B. . Artyukova . E. V. . Gontcharov . A. A. . Phylogenetic relationships among members of the subfamily Sedoideae (Crassulaceae) inferred from the ITS region sequences of nuclear rDNA . Russian Journal of Genetics . June 2006 . 42 . 6 . 654–661 . 10.1134/S102279540606010X . 33249840 . . 2019-10-15 . 2017-08-09 . https://web.archive.org/web/20170809055756/http://www.biosoil.ru/files/00002900.pdf . dead .
• Grulich . Vit . Generic division of Sedoideae in Europe and the adjacent regions . Preslia . 1984 . 56 . 29–45 .
• Book: Hart . H. 't . Infrafamilial and generic classification of the Crassulaceae . 159–172. 1995., in
• Ohba . H . Generic and infrageneric classification of the old world sedoideae crassulaceae . Journal of the Faculty of Science University of Tokyo Section III Botany 12(4): 139-193 . 1978 . 12 . 4 . 139–193.
• Book: Ohba . Hideaki. Systematic problems of Asian Sedoideae. 151–158. 1995., in
• Ohba . Hideaki . Bartholomew . Bruce M. . Turland . Nicholas J. . Kunjun . Fu . New Combinations in Phedimus (Crassulaceae) . . 2000 . 10 . 4 . 400–402 . . 10.2307/3392995 . 3392995 .