Lissoclinum patella is a species of ascidian in the family Didemnidae.

Lissoclinum patella is a sprawling ascidian that grows in coastal areas near Indonesia and Australia, including the Great Barrier Reef.

Its green hue is due to the colonies of cyanobacteria that grow within its tissue as symbionts, one known species is Prochloron didemni.

The biochemical products of its cyanobacteria is an active area of research, as example the circular peptide, Patellamide A.

[1] Schreiber, U., et al. "Assessment of photosynthetic performance of Prochloron in Lissoclinum patella in hospite by chlorophyll fluorescence measurements."