Ephemerella readeri Müll. Hal. (Physcomitrella readeri (Müll. Hal.) I.G. Stone & G.A.M. Scott,Funariidae, Bryophyta): a genus and species new to Europe

Abstract

A morphological and molecular analysis of a Physcomitrella, collected from a reservoir margin in the north of England, revealed this to be P. readeri, a species new to Europe. The present study clarifies previous confusion over the taxonomy of P. readeri showing it to be clearly distinct in both sporophytic and gametophytic characters from P. patens and uniform across its world range from England to USA, Japan and Australasia. While phylograms of the ITS1 region from both the Physcomitrella species, Physcomitrium pyriforme (Hedw.) Bruch & Schimp., Enthosthodon attenuatus (Dicks.) Bryhn and Funaria hygrometrica Hedw., place the first two in separate clades, in ITS2 phylograms they occur as sister taxa. This, together with previous genealogical studies on the speciation history of the Physcomitrella–Physcomitrium species complex, and morphology, suggests that generic rank is appropriate for P. readeri. We therefore reinstate the original name Ephemerella readeri Müll. Hal. Recent records at several reservoirs in England indicate that E. readeri may be native to UK, though remarkable congruence in ITS1 with Australian plants also suggests recent arrival as an alternative possibility.     

Raoul Combes (1883–1964) et la S.I.G.M.A.

Sans résumé     

Zur Nomenklatur der Gattungen Porochara Mädler 1955 (syn. Musacchiella Feist & Grambast-Fessard 1984) undFeistiella n. gen. (Charophyta)

The basal plate of the genusPorochara MäDLER 1955 (Porocharaceae, Charophyta) was proved to be divided into two parts by examining its type species. ThusMusacchiella Feist & Grambast-Fessard 1984 is a younger synonym ofPorochara. The genusFeistiella n. gen. is established for those species with undivided basal plates and it is described with the type speciesFeistiella bijuescensis n. sp. Six other species are attributed to this new genus. The relation between a fan shaped internal structure of the spiral cells and a brackish environment is discussed.     

遗传工程学家A.M.Chakrabarty

Ananda M.Chakrabsrty是一位著名的遗传工程学家和美国生物化学家协会、微生物协会、工业微生物协会以及美国科学促进会的成员。他于1938年4月4日诞生在印度的Sainthia,1965年在加尔各答大学获得生物化学博士学位。后来,他到了美国的伊利