Staurothele caesia Verrucariaceae
Staurothele caesia

Growth type crustose. BLS conservation evaluation: LC NS
Chemical results negative

Local distribution on hard, unshaded limestone, rare on mortar

Pale grey to brownish-grey endolithic thallus, the adjacent thalli sometimes separated by dark lines. Perithecia are immersed in deep pits, involucrellum absent. Asci 8-spored, spores muriform, 35-45 x 20-25 Ám, colourless but pale brown when over-mature. Hymenial algal cells 3-5 x 3-3.5 Ám.

Similar: Staurothele guestphalica, rare, asci 2-spored


Staurothele caesia

Staurothele caesia
Staurothele caesia
On limestone. Portland, Dorset. March 2016

All images used are copyright. Please contact me if you find errors.