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As part of an ongoing, comprehensive inventory of all Galapagos lichen species, the genus Bulbothrix is revised here. In Galapagos it is represented by five species of which only one, B. laevigatula, had previously been reported. Bulbothrix lyngei, B. scortella and B. subdissecta are all new to Galapagos; they also represent the first reports of these species for Ecuador. A fifth species, Bulbothrix bulbillosa, is described as new to science.
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Bungartz et al. (2013) studied this question.
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