| Pyxine profallax | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Caliciales |
| Family: | Caliciaceae |
| Genus: | Pyxine |
| Species: | P. profallax |
| Binomial name | |
| Pyxine profallax Kalb (2009) | |
Pyxine profallax is a species of corticolous (bark-dwelling), foliose lichen in the family Caliciaceae. [1] It is found in Australia, Papua New Guinea, and Thailand.
The lichen was formally described as a new species in 2009 by Klaus Kalb. The species epithet refers to its sorediate lookalike, Pyxine fallax . The type specimen was collected in 1975 by Syo Kurokawa near Woitape (Central Province, Papua New Guinea) at an elevation of about 1,600 m (5,200 ft). [2]
The loosely attached grey, whitish, or brownish-grey thallus of Pyxine profallax reaches a diameter of up to 5 cm (2 in). A mat of shiny black rhizines attach the thallus to its bark substrate . The lobes making up the thallus are up to about 1 mm wide, and divide more or less dichotomously . They have pseudocyphellae on the margins and a reticulate upper surface texture. Neither soredia nor isidia occur in this lichen, but it does have ascomata of the obscurens-type, measuring 0.5–1 mm in diameter, with black discs . The ascospores , which number eight per ascus, have a single septum and measure 16–20 by 6.5–8 μm. [2]
Pyxine profallax contains norstictic acid as a major compound, testacein (submajor), and atranorin as a minor secondary metabolite. Thin-layer chromatography shows that it also contains the same chemical array of terpenes that are found in its namesake, P. fallax. [2]
Originally described from Papua New Guinea, it was recorded from Thailand in 2012, [3] and from Queensland, Australia in 2015. [4]
Pyxine is a genus of foliose lichens in the family Caliciaceae. The genus has a widespread distribution in tropical regions.
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Malmidea leucopiperis is a species of corticolous (bark-dwelling), crustose lichen in the family Malmideaceae. It is found in Brazil.
Malmidea rhodopisoides is a species of corticolous (bark-dwelling), crustose lichen in the family Malmideaceae. It is found in Brazil.
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