Book ID: 52140
                                                            
                                                            
                                                                
                                                                    
HANSEN, Bertel
                                                                    
                                                                
                                                            
                                                                 The genus Ptyssiglottis (Acanthaceae). A taxonomic monograph.1992.(Opera Botanica,116).28 figs.58 p.gr8vo.Paper bd. 
                                                            
                                                            
                                                                                                                            
                                                                    A taxonomic treatment of the genus Ptyssiglottis includingAncylacanthus, Hallieracantha, Oreothyrsus, and Polystrema is given.The phylogeny is briefly dealt with. Leaf morphology, inflorescencemorphology and pollen morphology yield important characters. Thedistribution of selected characters is mapped. The distribution of allspecies is mapped. Eight new species are published.