Which term best describes the name identifying a specific variety of a cultivated plant?

The term that best describes the name identifying a specific variety of a cultivated plant is "cultivar name." A cultivar, short for "cultivated variety," is a plant that has been selected for specific characteristics and is maintained through propagation. Cultivar names are typically noted in single quotation marks and are essential for distinguishing between different variations of a species that have been developed through cultivation rather than found in nature.

Botanical names, also known as scientific names, refer to the formal classification of plants using a standardized naming system, which includes both the genus and species. Common names are the informal names used by the general public to refer to plants, which can vary by region and language. The genus name is specifically the first part of the botanical name that classifies a group of related species. While all these terms are related to plant identification, the cultivar name specifically highlights a cultivated variation, making it the most accurate choice for this question.