The rules for formatting botanical names have been
agreed upon by the International Association for Plant Taxonomy (IAPT).
The Compleat Botanica adheres to the official standard for botanical names
throughout the software. Proper capitalization rules, font styling rules, quotation of cultivars, and abbreviations for "variety" and
"subspecies" are consistently applied on all displays and all printed
reports and labels.
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See these Pathfinder documents for more about this: