Images of British Lichens
Sticta sylvatica (Huds.) Ach.
Mature thallus of multiple lobes (as distinct from grouped, single lobes), grey to grey-brown, surface conspicuously isidiate along an obscure network of ridges, margins not sorediate, under-surface brownish-tomentose, with scattered, white or pale cyphellae (breaks in the lower cortex); apothecia unknown. On mossy trees and rocks, mostly in the west and generally in old, humid forest. Compare S. fuliginosa.
Refs: Smith et al. (2009), 867; Purvis et al. (1992), 584; Dobson (2005), 420 (photo); Dobson (2011), 425 (photo); Jahns (1983), 242-3 (photo); Whelan (2011), 143 (photo); van Haluwyn et al. (2009), 54-5 (photo); Valcárcel et al. (2003), 356-7 (photo); Moberg & Holmåson (1984), 184 (photo); Nordic Lichen Flora (2007) 3: 86, 208 (photo); Wirth (1995), 2: 884-5 (photo); Hansen & Andersen (1995), 65 (photo); Thor & Arvidsson (1999), 330 (photo), 493; Lichen Atlas of the British Isles 3: 1369 (1998).
|On willow (Salix) in swampy woodland, Stackpole, Pembrokeshire, May 2009|
|Young thallus (resembling S. fuliginosa) on willow (Salix) in swampy woodland, Stackpole, Pembrokeshire, May 2009|
|On Sycamore (Acer pseudoplatanus), Ardanaiseig, Argyllshire, December 2009|
|Isidia (upper photograph), cyphellae (lower photograph), Talisker, Skye, October 2011|
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Uploaded December 2009, last updated October 2013