Anisomeridium biforme Monoblastiaceae
Anisomeridium biforme

Growth type crustose
Chemical reactions negative. Perithecial wall greenish in K

Common but easily overlooked on shaded, smooth-barked trees

Small, +/- immersed black perithecia (0.3-0.5mm) on thin, white to greyish thallus. Smaller pycnidia often extrude whitish jelly containing conidia. Spores 1-septate, (9)12-16 x 4.5-6(7) m, septum 1/2 to 1/3 distance from upper end. Microscope photographs below.

Similar: Anisomeridium polypori and Anisomeridium robustum. Also Acrocordia cavata and Acrocordia gemmata.


Anisomeridium biforme

Microscope photographs
Anisomeridium biforme


Anisomeridium biforme
Anisomeridium biforme
On salix. Holton Lee, Dorset. November 2012

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