Predmetom magisterskej diplomovej prace je analyza slovotvornej motivacie japonskych botanickych odbornych, ako aj ludovych pomenovani. Prva cast obsahuje teoreticke nazeranie na problematiku zpohladu botanickej taxonomie, lexikologie amorfologie. Predostiera terminologiu, ktora je potrebna pre pochopenie nasledujuceho vykladu. Druha cast popisuje metodologiu vyskumu a strucne prezentuje kategorie motivantov, podla ktorych je rozdelena tretia cast. Tretia, prakticka cast komentuje slovotvornu motivaciu vybranych japonskych botanickym pomenovani. Sporadicke poznamky pod ciarou prirovnavaju vyznamy obsiahnute v japonskej nomenklature s europskou. Hlavnym vystupom vyskumu je posledna priloha, v ktorej sa nachadza analyza 1100 japonskych pomenovani.The subject-matter of the thesis is an analysis of word-formation motivation of Japanese botanical nomenclature, including both scientific and common names. The first chapter delves into theoretical perception on this matter from perspective of botanical taxonomy, lexicology and morphology. Its goal is to introduce terminology necessary for further explanation. The second chapter describes methodology of the research and briefly present categories of motivants, according to which the third chapter is designed. The third, practical part commens on word-formation motivation of a selection of Japanese botanical names. Occasional footnotes make comparison of meanings encompassed in Japanese nomenclature to that of Europe. The main output of the research is the very last enclosure, where an analysis of 1100 Japanese plant names is to be found.