Cookies Policy

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

Delimitation of the genera Staurastrum and Staurodesmus

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

Access this chapter

+ Tax (if applicable)

Chapter Summary

The desmid genus Staurastrum, erected in 1828 by Meyen and validated by Ralfs in 1848, is exceptionally polymorphic and should be considered a highly artificial one. Staurastrum paradoxum Meyen ex Ralfs, considered the type species of this genus, is characterized by four- or triradiate cells provided with arm-like processes. The genus Staurodesmus was established by Teiling for a group of monospinous desmid species (semicells with one spine per radius). Up to then, those species were partly placed in the genus Staurastrum Meyen, and partly in the genus ArthrodesmusEhrenberg ex Ralfs. The reasons for doing this stemmed from the occasional observations of co-occurring triradiate cell forms (formerly Staurastrum) and biradiate forms (formerly Arthrodesmus) but obviously belonging to one and the same species. These relationships were reinforced by the occurrence of dichotypic cells (so-called Janus forms) consisting of one triradiate and one biradiate semicell.

Keywords: Arthrodesmus; desmid genus Staurastrum; Meyen; Ralfs; Staurodesmus; Teiling



Can't access your account?
  • Tools

  • Add to Favorites
  • Printable version
  • Email this page
  • Recommend to your library

    You must fill out fields marked with: *

    Librarian details
    Your details
    Why are you recommending this title?
    Select reason:
    European Flora of the Desmid Genera Staurastrum and Staurodesmus — Recommend this title to your library
  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation