De Spirogyra insigni (Hass.) Ktz. nov. var. fallaci, Zygnemate chalybeospermo nov. sp. et Z. rhynchonemate von. sp., adjecto conspctu subgenerum, sectionum subsectionumque generis Spirogyrae Link et Zgnematis (Ag.) De By
Published in Hedwigia, in 1888, in volume 27, pages 253-258
Date published:1888