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. 2012 Aug 10;2(9):2291–2303. doi: 10.1002/ece3.343

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© 2012 Published by Blackwell Publishing Ltd.

Re-use of this article is permitted in accordance with the Creative Commons Deed, Attribution 2.5, which does not permit commercial exploitation.

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Geographic origin of sequences studied (small black and white triangles) and diversity of Nostoc photobionts on the basis of the tRNA^Leu (UAA) intron. The full data set included 271 mycobiont sequences and 358 photobiont sequences. Photobiont haplotype groups A–G are differentiated by assorted geometric forms with the respective genotypes denoted by numbers. Geographic regions are color coded. The respective lichen species and numbers of samples identified are shown below each Nostoc genotype. Sequence identical photobiont genotypes were found over a wide geographic range in three cases, A1, A2, and A3 (filled squares).