What is "monsteroideae"

Monsteroideae is a subfamily of flowering plants in the Araceae family. It contains genera including: Alloschemone, Amydrium, Anadendrum, Epipremnum, Heteropsis, Holochlamys, Monstera, Rhaphidophora, Rhodospatha, Scindapsus, Spathiphyllum, and Stenospermation. The subfamily is notable for having many trichosclereids in the vegetative and floral parts of the plants, but rarely in the roots.