Hawaiian names for plants often focus on their physical characteristics or uses. To describe a buttercup in Hawaiian, you could use:
* "Pua melemele" (pronounced poo-ah meh-leh-meh-leh) which means "yellow flower."
* "Pua liʻiliʻi melemele" (pronounced poo-ah lee-ee-lee-ee meh-leh-meh-leh) which means "small yellow flower."
You could also describe the specific characteristics of the buttercup you're referring to, such as:
* "Pua me nā lau ʻāʻā" (pronounced poo-ah meh nah lau ah-ah-ah) which means "flower with round leaves."
Ultimately, the best way to describe a buttercup in Hawaiian would be to use the terms that best capture its appearance or features.