Some classifications knowingly have incomplete vocabularies but instructions are included for the determinations of the meanings of many additional terms. Some classifications and definitions of terms are based on special papers which are cited in the literature. A few new terms for perianth position, gynoecial and staminal types are introduced . Phytography, as an ordered and precise subject, is still in a rather primitive state. Seemingly there are too many terms in this chapter, but a real need exists for even more, with precise definition and application.
Terms represent concepts, or states of concepts.
Generalized concepts provide the basis of classification.