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Astrothelium Miniannulare
''Astrothelium miniannulare'' is a species of crustose lichen in the family Trypetheliaceae, characterized by its corticolous (bark-dwelling) habitat and presence of lichexanthone. Characteristics of the lichen include the whitish ring around its ostiole and the presence of three septa (internal partitions) in the . Taxonomy The species was described in 2018 by lichenologists Klaus Kalb and André Aptroot. The type specimen was collected in 1980 by the first author from the Mantiqueira Mountains, Rio de Janeiro, at an altitude of . The specific epithet ''miniannulare'' reflects its membership in the ''annulare''-group of genus '' Astrothelium'' and its small ascospores. Description ''Astrothelium miniannulare'' features a dull, pale olivaceous-green thallus up to 0.3 mm thick, with a thick cortex and medulla containing hyaline (translucent) crystals. The ascomata are spherical to , measuring 0.6–0.8 mm in diameter. The is hemispherical, about 1 mm in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Klaus Kalb
Klaus Kalb (born 1942) is a German lichenologist and an authority on tropical lichens. Biography Klaus Kalb was born in Nuremberg in 1942 and grew up in southern Bavaria. From 1960 to 1965 he studied biology, chemistry, and geography at the University of Erlangen–Nuremberg. Kalb was greatly interested in lichens and decided to pursue a doctoral degree; his thesis work was about lichen communities in the Ötztal Alps. From 1978–1981 he was a teacher at the Colégio Visconde de Porto Seguro in São Paulo, Brazil. This position afforded him the opportunity to initiate research into tropical lichens. Kalb earned his habilitation from the University of Regensburg in 1989, becoming an associate professor with that institution. In 2014, the University of Wisconsin herbarium purchased Kalb's lichen collection of 60,000 specimens for $75,000. With the acquisition of Kalb's collection, rich in tropical and European specimens, the herbarium houses about 70% of the world's know ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
