نتایج جستجو برای: compositae اسانس
تعداد نتایج: 6550 فیلتر نتایج به سال:
2007
V. A. Funk
Introduction Taxonomy classes are often taught that we as systematists are concerned with grouping and ranking. We are actually concerned with two levels of grouping: the grouping of individuals (into species), and the grouping of these "groups of individuals." There are, therefore, only two categories, species and groups of species (Nelson and Platnick, 1981). If we strive to make our species ...
Journal:
:Acta Botanica Malacitana
2016
Journal:
:Annals of the Missouri Botanical Garden
1917
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