Corticoids, Crusts, Brackets, and any non-mushroom like fungi growing on wood
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This faint, thin, almost purplish crust was on broadleaf wood. The most interesting feature was the basidia – these seemed to be 7- 8-spored. They are rather small (approx 4 um across), urn-shaped (short and squat) and even under ouil immersion, difficult to see clearly. The spores were deposited overnight, and were hyaline, allantoid 4-4.5 x 1.5-2. They agglutinated a lot. No cystidia were noted – a squash showed only rather twisted hyphae and basidioles (?). A few clamps wer noted. The only corticioid fungus which I thought fitted reasonably well on microscopic features was Sistotrema brinkmanii – though this is a apparently an ill-defined taxon. I was less happy with the macroscopic features. I ruled out Botryobasidium as the hyphae are much wider in that genus, and the spores don’t fit.
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