Biology:Rinodina densisidiata
| Rinodina densisidiata | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Caliciales |
| Family: | Physciaceae |
| Genus: | Rinodina |
| Species: | R. densisidiata
|
| Binomial name | |
| Rinodina densisidiata Kalb & Aptroot (2018)
| |
Rinodina densisidiata is a little-known species of corticolous (bark-dwelling), crustose lichen in the family Physciaceae,[1] first described in 2018. Found in Brazil, it is characterised its dense layer of cylindrical [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] and unique [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] characteristics.[2]
Taxonomy
Rinodina densisidiata was formally described by lichenologists Klaus Kalb and André Aptroot in 2018. The type specimen was collected between Jaciara and São Vicente (pt), Mato Grosso, Brazil, on tree bark in Cerrado at an altitude of 750 m (2,460 ft). The specimen was collected on 2 July 1980 by the first author. The specific epithet densisidiata refers to the thick layer of [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] that covers the [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]].[2]
Description
The thallus of Rinodina densisidiata originates as glossy brown, thin [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] that coalesce and become densely covered by a 0.4–0.9 mm thick-layer of [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]]. [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] are cylindrical, [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]], irregularly sparingly branched, completely dark brown, glossy, approximately 30–50 μm thick and up to 0.9 mm long. The [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] is [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] (i.e., spherical green algae), about 5–8 μm in diameter. [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] (fruiting bodies) are stipitate, 0.4–0.7 mm in diameter, with a dark brown, flat to convex, dull [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]]. The disc margin is dark brown at the inner rim and pale brown outside, usually somewhat higher than the disc, and measures about 0.1 mm wide. The [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] is hyaline (translucent) and measures 100–120 μm high. The [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] is brown, and the [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] is hyaline. [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] number eight per [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]], and are dark brown with a single septum. They measure 15–17 by 6.5–7.5 μm, and have rounded ends, thick walls, and angular [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]]. [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] were not observed to occur in this species.[2]
Chemical spot tests on the thallus show it to be UV−, C−, and K−. No thin-layer chromatography was performed.[2]
Habitat and distribution
Rinodina densisidiata is found on tree bark in the Cerrado biome, and at the time of its original publication was known to occur only in Brazil.[2]
See also
References
- ↑ "Rinodina densisidiata Kalb & Aptroot". Species 2000: Naturalis, Leiden, the Netherlands. https://www.catalogueoflife.org/data/taxon/4T3Z7.
- ↑ 2.0 2.1 2.2 2.3 2.4 Kalb, K.; Aptroot, A. (2018). "New lichen species from Brazil and Venezuela". The Bryologist 121 (1): 56–66. doi:10.1639/0007-2745-121.1.056.
Wikidata ☰ Q108328038 entry
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