Thelidium decipiens Verrucariaceae
Thelidium decipiens

Growth type crustose
Chemical results negative

Frequent on calcareous rocks, limestone and mortar.

Immersed creamy-white or brownish thallus with scattered perithecia sunken in pits and usually surrounded by a narrow crack. The ostiole is inconspicuous. Spores 0-1 septate, (19-)25-33(-41) (9-)11-14(-19) m. Microscope photographs below.

Similar: Thelidium papulare and T. incavatum. Spores 3(-5)-septate


Thelidium decipiens

Thelidium decipiens

Microscope photographs
Thelidium decipiens

Thelidium decipiens
Thelidium decipiens
Shapwick and Puddletown, Dorset. March 2014, May 2017

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