What's the plural form of sessile bellwort? Here's the word you're looking for.
Answer
The noun sessile bellwort can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be sessile bellwort.
However, in more specific contexts, the plural form can also be sessile bellworts e.g. in reference to various types of sessile bellworts
or a collection of sessile bellworts.