The unicellular alga Chlamydomonas reinhardtii is a classical reference organism for
studying photosynthesis, chloroplast biology, cell cycle control, and cilia structure and …

Seventy-three strains of cryptophytes assigned to the genera Cryptomonas, Campylomonas
or Chilomonas were studied by light microscopy, spectrophotometry and whole-mount …

Radiolarians with 'prunoid'morphologies (here defined as spumellarians with distinct
external, generally ellipsoidal shells, usually bearing a pylome and having a lithelid, pylonid …

Systems of classification are not hat racks, objectively presented to us by nature. They are
dynamic theories developed to express particular views about the history of organisms …

Charles Darwin, like others before him, collected aeolian dust over the Atlantic Ocean and
sent it to Christian Gottfried Ehrenberg in Berlin. Ehrenberg's collection is now housed in the …

The nominate varieties of the monoraphid diatoms Cocconeis lineata Ehrenberg and C.
euglypta Ehrenberg are typified. Lectotypes of both taxa are preserved at the Ehrenberg …

The identity of three naviculoid diatoms originally described by Ehrenberg and now placed
in the genus Placoneis was investigated. Type specimens and material from both the …

The nominate varieties of the monoraphid diatoms Cocconeis pediculus EHRENBERG and
C. placentula EHRENBERG are typified. Discrepancies from common concepts in …

The original material from which Ehrenberg described Gallionella distans has been
examined with light and electron microscopy with a view to understanding the morphology of …

The examination of a moss sample collected from a lake in a remote mountainous region of
Eastern Siberia revealed a diverse diatom flora that included four new species: Eunotia …