Biology:Rinodina maronisidiata
| Rinodina maronisidiata | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Caliciales |
| Family: | Physciaceae |
| Genus: | Rinodina |
| Species: | R. maronisidiata
|
| Binomial name | |
| Rinodina maronisidiata Kalb & Aptroot (2018)
| |
Rinodina maronisidiata is a species of corticolous (bark-dwelling), crustose lichen in the family Physciaceae,[1] first described in 2018. Found at high altitudes in the Venezuelan Andes, it is characterised by its unique [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]]-covered [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] and specific [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] morphology.
Taxonomy
Rinodina maronisidiata was formally described as a new species by the lichenologists Klaus Kalb and André Aptroot in 2018. The type specimen was collected in Libertador, Pico Espejo, Mérida, Venezuela, on tree bark in a mountain forest at an elevation of 4,200 m (13,800 ft). The specific epithet maronisidiata refers to the similarity of this species to an [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] species of Maronina (family Lecanoraceae).[2]
Description
The thallus of Rinodina maronisidiata originates as ochraceous to brown corticated [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]], soon covered by a thick layer of [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] and subsequently coalescing. Isidia are cylindrical, [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] (i.e., covered with a cortex), and irregularly densely and repeatedly branched. They are ochraceous to brown, often mottled, dull to partly glossy, and measure approximately 50–80 μm thick and up to 0.4 mm long. The [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] is [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] (spherical green algae), about 5–8 μm in diameter. [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] are stipitate, 0.4–1.2 mm in diameter, with a medium to dark brown, mostly flat, dull [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]]. The margin, ochraceous with a yellowish tinge, is usually much higher than the disc. The [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] is hyaline (translucent), measuring 200–250 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 four to eight per [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]], and are dark brown with a single septum. They measure 31–36 by 13–16 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 analysis of the thallus medulla (in the form of standard chemical spot tests) shows it to be UV+ (greenish white), C+ (orange), and K−. Thin-layer chromatography reveals the presence of arthothelin as the major lichen product.[2]
Habitat and distribution
Rinodina maronisidiata is found on tree bark in mountain forests and at the time of its initial publication was known only to occur in Venezuela.[2]
See also
References
- ↑ "Rinodina maronisidiata Kalb & Aptroot". Species 2000: Naturalis, Leiden, the Netherlands. https://www.catalogueoflife.org/data/taxon/4T434.
- ↑ 2.0 2.1 2.2 2.3 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 ☰ Q108328468 entry
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