False Irish Moss (Mastocarpus Stellatus) is a perennial aquatic in the Phyllophoraceae family with moderate care difficulty. It requires aquatic watering and full sun or partial shade light in USDA hardiness zones 3-9. This plant is safe for cats and dogs.

Mastocarpus stellatus is a small red marine algae species commonly found in the intertidal zones of rocky shores, notable for its cartilaginous, purplish-brown fronds and dense tufted growth.