Feist, M.; Grambast-Fessard, N. (1991). The genus concept in Charophyta: evidence from Palaeozoic to Recent. pp. 189-203. In: Riding, R. 1991. Calcareous algae and stromatolites. Springer-Verlag. 570 pp.

239992

10.1007/978-3-642-52335-9_11 [view]

Feist, M.; Grambast-Fessard, N.

1991

pp. 189-203. In: Riding, R. 1991. Calcareous algae and stromatolites. Springer-Verlag. 570 pp.

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In fossil Charophyta, the generic criteria are based on characters of the calcified fructifications (gyrogonite or utricle). However, the classification of living forms is based mainly on vegetative parts. An alternative system employing gyrogonite characters might permit the classification of both living and fossil members of the Characeae. Thus, the systematics of fossil Charophyta may be considered as founded on natural taxa and not on organ-genera. Examples of Palaeozoic to Recent representatives demonstrate the various criteria used to distinguish genera in the different families. Phylogenetic lineages of species allow the recognition of phyletic genera, especially in the Clavatoraceae. Relationships between genera outline the main phylogenetical trends in Charophyta. Two new suborders are established as well as two new combinations concerning species figured in the present paper: Palaeocharineae nov. subordo, Charineae nov. subordo; Nitellopsis (Tectochara) morulosa n. comb.. Porochara sardiniae n. comb. In addition, the revision of all charophyte genera has led us to put nine genera into synonymy: Minhechara Wei = Latochara Mädler; Paracuneatochara Wang = Leonardosia Sommer; Caucasuella Kyansep-Romashkina = Aclistochara Mädler; Gobichara Karczewska & Ziembinska-Twordzydlo = Microchara Grambast; Piriformachara Liu & Wu = Mesochara Grambast; Qinghaichara Yang = Nitellopsis Hy; Retusochara Grambast = Peckisphaera Grambast; Sinochara Lin & Wang = Peckichara Grambast; Songliaochara Wang, Lu & Zhao = Nodosochara Mädler; Turbochara Wang = Nodosochara Mädler; Tolypella (Al. Braun) Leonhardi, pro parte = Sphaerochara Mädler emend. Horn af Rantzien & Grambast.

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