Definition of "helianthus" [helianthus]

• Any plant, of the genus Helianthus, having large flower heads with dark disk florets and showy yellow rays; the sunflowers (noun)

Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License

• "She did not know that a helianthus was a sunflower until her mother told her so, and she had never seen the dear, blue, bell-shaped flowers that always grow in old-fashioned gardens, and are called Canterbury bells."
• "She did not know that a helianthus was a sunflower till her mother told her, and she had never seen the dear, blue, bell-shaped flowers that always grow in old-fashioned gardens, and are called Canterbury bells."
• "Powis Castle artemesia, feverfew, Regina heuchera and helianthus maximillian, not sure about the spelling on that one, and of course the wonderful plaque."