Cytology ofCrocus sativus and its allies (Iridaceae) Christine A. Brighton OriginalPaper Pages: 137 - 157
Wood anatomy of theSarraceniaceae; ecological and evolutionary implications Larry E. De Buhr OriginalPaper Pages: 159 - 169
The relation of heterocysts and hormogonia to nitrogen fixation and reproduction in blue-green algae A. H. M. Geurts van KesselJ. H. MullahyH. F. Linskens OriginalPaper Pages: 171 - 176
New species ofRelbunium (Rubiaceae) from Brazil, with notes on flavonoid and peroxidase patterns M. L. PortoJ. E. A. MariathF. Ehrendorfer OriginalPaper Pages: 177 - 193
Chromosomal evolution inEpilobium sect.Epilobium (Onagraceae), II. Steven R. SeaveyPeter H. Raven OriginalPaper Pages: 195 - 200
Amounts of ribosomal DNA inAllium (Liliaceae) Fabio MagginiFabio Garbari OriginalPaper Pages: 201 - 208
Karschia destructans: Falsch interpretierte Beziehungen zwischen zwei Flechten Josef Hafellner OriginalPaper Pages: 209 - 214
Embryo sac studies in three Indian species ofPolypleurum (Podostemaceae) C. R. NagendranG. D. ArekalK. Subramanyam OriginalPaper Pages: 215 - 226
Zur Skulptur der Pollen-Exine bei drei Centrospermen (Gisekia, Limeum, Hectorella), bei Gyrostemonaceen und Rhabdodendraceen H. -Dietmar Behnke OriginalPaper Pages: 227 - 235
Two newVeronica species (Scrophulariaceae) of Turkey and Iraq Manfred A. Fischer OriginalPaper Pages: 237 - 241
Nuclear DNA and heterochromatin contents in theScilla hohenackeri group,S. persica, andPuschkinia scilloides (Liliaceae) Johann Greilhuber OriginalPaper Pages: 243 - 257
Zur Entwicklungsgeschichte der EpithemiaceenEpithemia, Rhopalodia undDenticula (Diatomophyceae) und ihre vermutlich symbiotischen Sphäroidkörper Lothar Geitler OriginalPaper Pages: 259 - 275
Evolutionary implications of herbivory onVernonia (Compositae) William C. Burnett Jr.Samuel B. Jones Jr.Tom J. Mabry OriginalPaper Pages: 277 - 286
Drei neue Arten desFestuca ovina-Formenkreises (Poaceae) aus dem Osten Österreichs Reinhild Tracey Kurze Mitteilung Pages: 287 - 292
Taxa et nomina nova generisVeronicae (Scrophulariaceae) Turciae Manfredo A. Fischero Nota Brevis Pages: 293 - 297