Desmidium grevillei - S55
original name: Desmidium cylindricum
slide: Pfeiffer v. Wellheim
year: 1897
notes: Millstaedter, Hochmoore
original name: Desmidium cylindricum
slide: Pfeiffer v. Wellheim
year: 1897
notes: Millstaedter, Hochmoore
slide: Pfeiffer v. Wellheim
year: 1897
notes: leg: Schmula, Opplen
original name: Spirogyra crassa
slide: Pfeiffer v. Wellheim
year: 1894
slide: Botan. Institut der deutschen Univ. in Prag
year: 1897
notes: Konjugation
slide: J Luetkemueller
notes: Wittingau Boehmen
original name: Spirogyra crassa
slide: Pfeiffer
year: 1894
slide: F. Pfeiffer v. Wellheim
year: 1919
slide: Pfeiffer
year: 1892
notes: in Copulation
original name: Staurospermum quadratum
slide: Pfeiffer v. Wellheim
year: 1897
slide: Pfeiffer v. Wellheim
year: 1897