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Lichen: Ramalina cuspidata

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Name: Ramalina cuspidata (Ach.) Nyl. (1870)

Ramalina cuspidata

Ramalina cuspidata

Pronunciation: Ramalina cuspidata

Conservation Evaluation: Least Concern
Body Type: Fruticose Common Name: Sea Ivory

Ramalina siliquosa

Ramalina siliquosa with blackened parts on the thallus.

Description: The tufted semi-erect strap-like thallus has a shiny cream-grey to ivory colour. The main stems are close to circular in cross section; the base of the tuft is black; the openings of the pycnidia along the thallus straps are black. Parts of the strap-like thallus may also become blackened.

Pycnidia ostioles are black.

Pycnidia ostioles are black.

Chemical Tests: Three chemotypes are known so many combinations of the spot tests are positive: (a) K+ yellow, Pd+ yellow, UV-, (b) K+yellow-orange, Pd+ yellow orange, UV- and (c) K-, Pd- UV-.
Nature Notes: A rocky seashore (silica-rich rocks) species found either with Ramalina siliquosa or a little lower down the shore. Ramalina cuspidata is more erect than R. siliquosa and tends to occur in more sheltered areas. Absent from much of the south and south east coast.

Pycnidial ostioles are black.

Pycnidial ostioles are black.

Vice county distribution map: See Map

VC Map Ramalina cuspidiata

VC Map Ramalina cuspidiata

Link: Map this species on the Lichen Survey
Other species recorded in Ireland:

  • Ramalina calicaris (L.) Fr.
  • Ramalina canariensis J.Steiner
  • Ramalina chondrina J.Steiner
  • Ramalina fastigiata (Pers.) Ach.
  • Ramalina fraxinea (L.) Ach.
  • Ramalina lacera (With.) J.R.Laundon
  • Ramalina pollinaria
  • Ramalina polymorpha (Lilj.) Ach.
  • Ramalina portuensis Samp.
  • Ramalina siliquosa (Huds.) A.L.Sm.
  • Ramalina subfarinacea (Nyl. ex Cromb.) Nyl.


Text and images © Paul Whelan, 2009.