%A Wilhelm Sauer %T A PHYLOGENETIC MODEL FOR NORTH-EURASIATIC TUBIFLORAE ON THE BASE OF COMPARATIVE MORPHOLOGY,ZYTOGENETICS AND ECOLOGY %0 Journal Article %D 1986 %J Plant Diversity %R %P 1-3 %V 8 %N 04 %U {https://journal.kib.ac.cn/CN/abstract/article_32337.shtml} %8 1986-08-25 %X Many papers have been written about evolution and phylogeny of organisms.Very often missing informations have stimulated more or less probable hypotheses.But extensive phlogenetic surverys of genera or even of families still are very seldom.That may derive from the fact.that especially in plnat phyla fossil traditions over more extent geological periods are very rare;in other words:within higher plants they can be characterized as exceptions.