Abstract
This study presents data of eight Bulbothrix (Parmeliaceae, Lichenized Fungi) species containing norstictic or protocetraric acid in the medulla. The current species delimitations were confirmed. New synonyms are proposed, new characteriscts are detailed and range extensions are added.
Highlights
Bulbothrix Hale was proposed for the group of species called Parmelia Series Bicornutae (Lynge) Hale & Kurokawa (Hale 1974), characterized by small, laciniate and usually adnate thalli, bulbate marginal cilia, cortical atranorin, simple to branched cilia and rhizinae, smooth to coronate apothecia, hyaline unicellular ellipsoid to bicornute ascospores 5.0−21.0 × 4.0−12.0 μm, and bacilliform to bifusiform conidia 5.0−10.0× 0.5−1.0 μm (Hale 1976, Elix 1993)
Chemical constituents of the additional specimens examined were identified by thin-layer chromatography (TLC) using solvent C (Bungartz 2001), and compared with the data on labels left with the specimens
The types had their chemical constituents examined by high performance liquid chromatography (HPLC), following the methods described in Elix et al (2003)
Summary
Bulbothrix Hale was proposed for the group of species called Parmelia Series Bicornutae (Lynge) Hale & Kurokawa (Hale 1974), characterized by small, laciniate and usually adnate thalli, bulbate marginal cilia, cortical atranorin, simple to branched cilia and rhizinae, smooth to coronate apothecia, hyaline unicellular ellipsoid to bicornute ascospores 5.0−21.0 × 4.0−12.0 μm, and bacilliform to bifusiform conidia 5.0−10.0× 0.5−1.0 μm (Hale 1976, Elix 1993). Bulbothrix viatica Spielmann & Marcelli differs by the coronate apothecia, common and constant occurrence of laminal ciliary bulbs, larger ascospores (12.0−18.0 μm long), variable coloration of the lower cortex and by the presence of medullary norstictic acid.
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