Aneura pinguis

Description

The greasy-looking, mid-green colour of A. pinguis is highly distinctive, so it is readily identifiable despite varying greatly in size. Small thalli can be scarcely larger than a Riccardia - less than 1 cm long - whereas large ones may exceed a Pellia in size, being 8 cm or more in length. Each thallus is rather thick and chunky, with the slightly wavy margins little thinner than the midrib, although the largest plants (sometimes considered a different species) have very thin, undulate edges. Sexual organs are produced on the sides of the thalli, and cylindrical sporophytes are common