Ramalina sarahae is described as new to science and considered to be closely related to the widespread R. lacera. It has a cortex without chondroid strands but differs from R. lacera in having a densely caespitose thallus of thin branches with only pseudocyphellae. The species is considered to be naturally rare, occurring in a small area of San Miguel Island in southern California, and on San Nicolas Island. Currently eight species of Ramalina are known from the Channel Islands.
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16 November 2018
Ramalina sarahae (Ramalinaceae), a new species from the Channel Islands of California, U.S.A.
Kerry Knudsen,
James C. Lendemer,
Jana Kocourková
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The Bryologist
Vol. 121 • No. 4
Winter 2018
Vol. 121 • No. 4
Winter 2018
Island biodiversity
Mexico
rare species
taxonomy