POLLEN KEYS FOR IDENTIFICATION OF CONIFEROPSIDA AND COMPOSITAE CLASSES UNDER LIGHT MICROSCOPY AND THEIR ECOLOGICAL SIGNIFICANCE
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Abstract:
This paper represents the master keys for taxonomic identification of Coniferopsida and Compositae pollens which exist broadly in sedimentary strata,and their ecological significance. Thirteen types(Taxodiaceae,Cupressaceae,Juniperus,Taxaceae,Larix,Tsuga,Podocarpus,Picea,Cedrus,Abies,Pinus(Diploxylon),Pinus(Haploxylon) and Keteleeria) were classified stepwisely according to the presence/absence of saccus,the structure and sculpturing of extine,the morphology and sculpturing of saccus,the feature of transiti...
