Zwackhia prosodea, Opegrapha prosodea Lecanographaceae
Zwackhia prosodea (Opegrapha prosodea)

Growth type crustose
Chemical results and UV negative

Old woodland and parkland species found on dry, shaded bark of mature and old Yew and Oak. BLS conservation evaluation: NT NS P Eng Wa IR

Thin greyish, green or olive-brown thallus with scattered or contiguous, straight or curved lirellae. Discs persistently slit-like with swollen exciple. Spores 8-14 septate, (40-)50-70(-80) x 6-8 Ám with a narrow perispore. Microscope photographs below.

Similar: O. viridis. Usually on younger bark, smaller knot-like apothecia


Opegrapha prosodea


Opegrapha prosodea


Opegrapha prosodea

Microscope photographs
Opegrapha prosodea


Opegrapha prosodea
Zwackhia prosodea (Opegrapha prosodea)
Lytchett Matravers, Dorset. January 2014

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