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Graphis scripta (L.) Ach.


A thin, smooth, pale crust with prominent, long, very narrow, curved, often forked apothecia (lirellae), with a grey hymenium and raised, black, unfurrowed margins; spores colourless, with transverse septa only. Widespread and often common on smooth bark. Generally the commonest of a group of very similar species, including species of Graphina and Phaeographis (pages pending), that require microscopic examination for certain identification.

Refs: Smith et al. (2009), 416; Purvis et al. (1992), 259; Dobson (2005), 182 (photo); Dobson (2011), 188 (photo); Jahns (1983), 256-257 (photo); Whelan (2011), 98 (photo); van Haluwyn et al. (2009), 180-1 (photo); van Herk & Aptroot (2004, 2013), 186-187 (photo); Wirth (1995), 1: 407 (photo); Wirth et al. (2004), 269 (photo); Wirth, Hauck & Schulz (2013), 1: 497 (photo), 498; Frahm et al. (2010), 69 (photo); Moberg & Holmåson (1984), 213 (photo); Holien & Tønsberg (2008), 200 (photo); Stenroos et al. (2011), 227 (photo); Valcárcel et al. (2003), 194-5 (photo); Puntillo (1996), plate 19 (photo); Brodo et al. (2001), 327-8 (photo).

Lichenicolous fungi on this host include Stigmidium microspilum.

FGBI: http://fungi.myspecies.info/all-fungi/graphis-scripta

 
Graphis scripta
Graphis scripta, close view
On Hazel (Corylus avellana), Glen Tilt, Perthshire, April 2008


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Uploaded December 2009, last updated January 2016