Description: This species should be searched for on limestone soils and on old, mortared walls. The growth habitat is similar to that of M. sabuletorum (described elsewhere) except that the thallus becomes minutely squamulose (scale-like), the squamules white with a dark centre. Under the microscope the spores will be seen to be shorter: 14-20&

371;m compared with 18-45&

371;m for M. sabuletorum.

Key Identification Features:

• Thallus granular and warted, becoming minutely squamulose, the squamules white with dark centres — this is very conspicuous
• Spores shorter and more obviously blunted than in M. sabuletorum.

Original text submitted by Vince J. Giavarini

Distribution Map from NBN: Bilimbia lobulata at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Bilimbia lobulata at iNaturalist World Species Observations database.