Diatom Monographs / A revision of the family Pleurosigmataceae (Bacillariophyta)

Erscheinungsjahr 2012
ISBN: 978-3-905997-00-2
Verlag: Gantner, A R

Buch, Englisch, Band Bd. 14, GB, Gewicht: 600 g

Reihe: Diatom Monographs

The morphology of the family Pleurosigmataceae Mereschkowsky is
documented using light and scanning electron mircroscopy. A historical
overview of the treatment of the family is given and their
interrelationships explored using cladistic analysis. Four new genera
are described; Arcuatasigma gen. nov., Carinasigma gen. nov.,
Cochlearisigma gen.nov. and Costasigma gen. nov.; fourteen new
combinations are proposed; and five new species described: Arcuatasigma
addu sp. nov., Arcuatasigma castracanensis sp. nov., Donkinia
lipscombensis sp. nov., Cochlearisigma ohsinsina sp. nov. and
Costasigma simsii sp. nov. Plagiotropis is shown to be most closely
related to the keeled members of the Pleurosigmataceae and is thus
included in the Pleurosigmataceae, a new tribe is proposed to reflect
this relationship, Carinasigmodeae tribe nov., which contains the new
sub - tribe Rhocosigmodeae sub - tribe nov. within it to reflect the
relationships of Rhoicosigma and Cochlearisigma. A further two tribes
are described, Toxonideae tribe nov. and Pleurosigmodeae tribe. nov.
Pleurosigma transilvanicum is formally transferred here to Gyrosigma
transilvanicum (Pantocsek) Reid comb. nov. as it contains all the
characters of Gyrosigma not Pleurosigma i.e. striae arranged in
longitudinal and transverse rows. Hyalosigma is shown to be a member of
the Pleurosigmataceae and is formally transferred to the family.
(Quoted from the abstract).

Autoren/Hrsg.

Reid, Geraldine

Witkowski, Andrzej