Vesicularia montagnei is a species of moss.

It is used in planted aquariums as an ornamental underwater plant, commonly referred to as Christmas moss.

[1][2][3][4] It is found in Australia, China, Japan, India, Indonesia, the Philippines, Sri Lanka, Thailand, Sudan, and Vietnam.

[5] In its natural habitat it grows in damp situations on rocks and the trunks of trees.

[5]