Apoglossum ruscifolium is a small red marine seaweed.

Apoglossum ruscifolium has branched monostromic blades growing to 10 cm long.

The species is similar to Membranoptera alata and Hypoglossum hypoglossoides but can be clearly distinguished.

[2][1] Recorded all around Great Britain and Ireland including Shetland, the Isle of Man and the Channel Islands.

Norway to the Mediterranean, the South Atlantic and Indian Oceans.