1. Galium procurrens, a new diploid relic species of theG. sylvaticum-group from the Balkan Peninsula

   • Friedrich Ehrendorfer
   • Minčo E. Ančev

   OriginalPaper Pages: 1 - 6

2. Formwechsel, sippenspezifischer Paarungsmodus und Systematik bei einigen pennaten Diatomeen

   • Lothar Geitler

   OriginalPaper Pages: 7 - 30

3. Hectorella caespitosa: Ultrastructural evidence against its inclusion intoCaryophyllaceae

   • H. -Dietmar Behnke

   OriginalPaper Pages: 31 - 34

4. Laubblatt-Flavonoide und Systematik beiMatricaria undTripleurospermum (Asteraceae-Anthemideae)

   • Harald Greger

   OriginalPaper Pages: 35 - 55

5. Leaf flavonoids ofGalium sect.Aparinoides (Rubiaceae)

   • Christian Puff

   OriginalPaper Pages: 57 - 66

6. Aneusomaty inOrobanche gracilis

   • Johann Greilhuber
   • Anton Weber

   OriginalPaper Pages: 67 - 77