![](http://www.alamy.com/thumbs/6/6BCDDF27-039E-4C87-A819-7B72FB6E5933/2R1E8AJ.jpg)
Ramalina siliquosa (sea ivory) is widely found on siliceous rocks and stone walls on coastlands round the British Isles.
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Photo credit: © Peter Martin Rhind / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: atlantic, coastal, coasts, eaten, erect, greenish, grey, ivory, lichen, maritime, north, pendant, ramalina, ramalinaceae, sea, sheep, shrubby, siliquosa, wales