Definitions, Oh My!

“… a genus of American perennial herbs (family Nyctaginaceae) having a tubular-campanulate brightly colored calyx subtended by an involucre that resembles a …”

https://www.merriam-webster.com/dictionary/Mirabilis#:~:text=%3A%20a%20genus%20of%20American%20perennial,calyx%20see%20four%2Do’clock