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