phytonym

noun3

1. •
   A (non-taxonomic) plant name.

   • Aniseed: (Pimpinella anisum) [...] This phytonym refers also to Foeniculum vulgare because this plant has yellow flowers, fine foliage and a strong smell of aniseed. — 2008
2. •
   The name of an individual plant (e.g. General Sherman, a tree in Sequoia National Park, California).
3. •
   An anthroponym derived from the name of a plant.