What is the name of a small water-filled cavity in a terrestrial plant?

much more than I wanted to know, but interesting Breeding grounds for mosquitoes 🦟!

Eeore, You probably know this, but there are no extra-terrestrial plants (as far as we know) The word terrestrial is used to differentiate between land plants and aquatic plants.

Bonnie , That was my question too. What are the extra terrestrial ones like?

wish I didn't know that lovely heliconias provide comfortable breeding space for malaria and dengue carrying mosquitos, rather spoils their beauty.

Many species of South American dart frog tadpoles develop into frogs in water-filled bromelaid leaf axils.

These are some weird & difficult questions tonight. Sounds like something from outer space! 🙄