الفهرس 
acknowledgmentOnly 14 pages are availabe for public view
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Abstract
T7hrOUgh new advances in electron microscopy.
electrophoresis, gas chromatography, and other developing
techniques,one may well wonder how systematics (which began as a
relatively simple activity including only species recognition and
classification) are involved into a highly complex science. The
incorporation of new data arising from the application of modern
botanical techniques, in recent years, allow the detection and
identification of extremely minute samples of many compounds that are
provingto be as useful systematic tools (Alston and Turner, 1963 a).
The two terms, systematic and taxonomy, are often used
synonymously, but more accurately taxonomy is the study of the bases,
principles, procedures, and rules of classification (l1eywood, 1973) while
systematic is the cIassifactory process itself. Also, careful must be taken
to distinguish between the taxonomy of organisms, and the study of their
phylogeny, i.e. their origin. Phylogenycan be considered as a taxonomy
in which the resulting system is thought to be representative of the
historical evolution of the organisms studied. Descent from common
ancestors with evolutionary modifications is studied in its various
manifestation: morphological. biochemical or otherwise. Consequently a
phylogeny, adequately constructed, is a more powerful conceptual
frameworkthan is a taxonomy alone.