Calendula officinalis or common marigold

Calendula officinalis, the pot marigold, common marigold or Scotch marigold, is a plant in the genus Calendula of the family Asteraceae. Calendula officinalis is a marigold plant that has been used for a host of different ailments. The fragrant leaves attract butterflies and the petals can be consumed and used in cooking.

Calendula oil is made by infusing the flowers in a carrier oil (such as olive oil or coconut oil). The oil can be used on its own or as an ingredient in ointments, balms, creams, or lotions. It can also be produced in tincture, tea, or capsule form.

Mother-in-law’s tongue is name of Sansevieria trifasciata

Mother-in-law’s tongue is the popular name of Sansevieria trifasciata
Sansevieria-trifasciata-Laurentii-Striped-Mother-in-laws-Tongue

The International Code of Nomenclature for algae, fungi, and plants

The International Code of Nomenclature for algae, fungi, and plants is the set of rules and recommendations dealing with the formal botanical names that are given to plants, fungi and a few other groups of organisms, all those "traditionally treated as algae, fungi, or plants". It was formerly called the International Code of Botanical Nomenclature. The current version of the code is the Shenzhen Code adopted by the International Botanical Congress held in Shenzhen, China, in July 2017.
Plant Botanical Nomenclature Are Unique
For example, Agave attenuate takes its common name, Foxtail plant, because of its tall and curved flowering stalks.