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Images of British Lichens

Ramalina siliquosa (Huds.) A.L.Sm.

Thallus fruticose, tufted, erect to pendant, branches flat, strap-like or curved and pointed, often irregular, ivory to greenish-grey, soralia absent; apothecia frequent, laminar or marginal, sometimes many small, immature apothecia and pale pycnidia scattered over the branch surfaces; grazing by molluscs may reduce thalli back to the crustose-like holdfasts (see lowest photograph and Dalby & Dalby). Generally abundant on exposed, hard coastal rocks (often in company with R. cuspidata), rare only in the south east where there is little available habitat, also as a rarity inland.

Refs: Smith et al. (2009), 787; Purvis et al. (1992), 528; Dobson (2005), 384 (photo); Dobson (2011), 387-8 (photo); Jahns (1983), 230-231 (photo); Allen (2007), 17 (photo, habitat); Dalby & Dalby (2005), 25 (illustration), 42 (photo, grazed thalli); Whelan (2011), 139 (photo); van Herk & Aptroot (2004, 2013), 336-7 (photo); Valcárcel et al. (2003), 334-5 (photo); Wirth et al. (2004), 45 (photo); Wirth, Hauck & Schulz (2013), 2: 971, 972 (photo); Moberg & Holmåson (1984), 163 (photo); Stenroos et al. (2011), 404 (photo).

Ramalina siliquosa, South Uist, on island in freshwater loch
Rather gross (mite affected?) material on island in freshwater loch, South Uist, Outer Hebrides, July 2006
Ramalina siliquosa
Sea-cliffs, Bettyhill, Sutherland, August 2006
Ramalina siliquosa
On coastal rocks, Kennedy's Pass, Ayrshire, May 2008
Ramalina siliquosa
On coastal rocks, grazed by marine molluscs, Girvan, Ayrshire, May 2008

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Uploaded July 2008, last updated December 2013