Graphidaceae Phaeographis dentritica Growth type crustose Chemical results: K+ yellow > red, C-, KC+ red, P+ yellowish-orange, UV- Mainly found in the south and west on shaded acid-barked trees. NIEC 'Old woodland' indicator species Light-grey or whitish, powdery, cracked or slightly granular thallus with immersed branched apothecia. Lirellae often stellate with prominent carbonaceous margins and a pruinose disc. Base of exciple is closed, margin continuing under disc. Spores (5-)7-9 septate, 30-50 x 6-10 µm. Micrographs below. Similar: Phaeographis smithii. Base of exciple open, spores 5-7 septate

Micrographs





Phaeographis dentritica
New Forest, Hampshire and Studland and Charbororough Green, Dorset. December 2012, November 2013, March 2020