Patterns of intraspecific variation inAntennaria alborosea, A. corymbosa, A. marginata, A. microphylla, A. parvifolia, andA. umbrinella (Asteraceae:Inuleae) J. G. ChmielewskiC. C. ChinnappaJ. C. Semple OriginalPaper Pages: 123 - 150
The genusAntennaria (Asteraceae: Inuleae) in western North America: Morphometric analysis ofAntennaria alborosea, A. corymbosa, A. marginata, A. microphylla, A. parvifolia, A. rosea, andA. umbrinella J. G. ChmielewskiC. C. ChinnappaJ. C. Semple OriginalPaper Pages: 151 - 175
Ant nests as primary habitats ofSilybum marianum (Compositae) Avinoam DaninYoram Yom-Tov OriginalPaper Pages: 209 - 217
Systematics ofJusticia sect.Pentaloba (Acanthaceae) Richard A. Hilsenbeck OriginalPaper Pages: 219 - 235
Invasive tapetum and tricelled pollen inAmbrosia trifida (Asteraceae, tribeHeliantheae) N. R. LerstenJ. D. Curtis OriginalPaper Pages: 237 - 243
A redescription ofPotamogeton distinctus including remarks on the taxonomy of thePotamogeton nodosus group Gerhard Wiegleb OriginalPaper Pages: 245 - 259