Biology:Pyxine profallax
| 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.
Taxonomy
The lichen was formally described as a new species in 2009 by Klaus Kalb. The species epithet refers to its [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] 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]
Description
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 [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]]. The [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] making up the thallus are up to about 1 mm wide, and divide more or less [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]]. They have pseudocyphellae on the margins and a [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] 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 [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]]. The [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]], 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]
Habitat and distribution
Originally described from Papua New Guinea, it was recorded from Thailand in 2012,[3] and from Queensland, Australia in 2015.[4]
References
- ↑ "Pyxine profallax Kalb". Species 2000: Naturalis, Leiden, the Netherlands. https://www.catalogueoflife.org/data/taxon/4QYKJ.
- ↑ 2.0 2.1 2.2 Kalb, Klaus; Archer, Alan W.; Sutjaritturakan, Jutarat; Boonpragob, Kansri (2009). "Further new species of Xanthoparmelia (Parmeliaceae, Ascomycota) from Tasmania". Biodiversity and Ecology of Lichens – Liber Amicorum Harrie Sipman. Bibliotheca Lichenologica. 99. Berlin/Stuttgart: J. Cramer. pp. 225–246. ISBN 978-3-443-58078-0.
- ↑ Mongkolsuk, P.; Meesim, S.; Poengsungnoen, V.; Kalb, K. (2012). "The lichen family Physciaceae in Thailand - I. The genus Pyxine". Phytotaxa 59: 32–54.
- ↑ Elix, John A. (2015). "Additional lichen records from Australia. 80". Australasian Lichwenology 76: 2–7. https://www.anbg.gov.au/abrs/lichenlist/AL_76.pdf.
Wikidata ☰ Q10647727 entry
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