Biology:Fissurina longiramea
| Fissurina longiramea | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Graphidales |
| Family: | Graphidaceae |
| Genus: | Fissurina |
| Species: | F. longiramea
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| Binomial name | |
| Fissurina longiramea Makhija & Adaw. (2007)
| |
Fissurina longiramea is a species of corticolous (bark-dwelling) script lichen in the family Graphidaceae.[1] It is found in various locations across India, including the Andaman Islands, Karnataka, and the Nicobar Islands, where it grows in tropical rainforests. The lichen was formally described as a new species in 2007 by Urmila Makhija and Bharati Adawadkar.[2]
The thallus of Fissurina longiramea appears pale brown or greenish-yellow. Its surface is rough, slightly glossy, thick, and cracked, with a thin, black [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] delineating its borders. The ascomata are [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] in form, measuring 8–13 mm in length and bearing a colour similar to the thallus. They are scattered, [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]], and can be immersed to slightly raised, with either acute or obtuse ends. The [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] is narrow, slit-like, dark brown, and [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]]. The [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] is present below, non-striate, broad at the apex, flattened at the basal region, and non-[[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]]. It is orange-yellow to brownish, turning dark orange-red when wet. The exciple is convergent and covered by a [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] featuring a distinct, yellowish [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] layer extending up to the top.[2]
The hymenium is hyaline, 142–155 μm high, and may contain crystals. The [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] is indistinct, thin, and varies in colour from hyaline to pale yellowish. [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] are long, thick, unbranched, and warty at the tips. [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] range from short to moderately long and have warty tips. Asci contain eight spores, and have dimensions of 95–110 by 10–12 μm. The [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] consistently have 3 transverse septa, are ellipsoidal, and typically measure 8–16 by 3–4 μm, with a 1–2 μm-thick [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]].[2]
Fissurina longiramea does not react to any of the standard chemical spot tests, and does not appear to contain lichen products. In terms of ascomatal structure, the species resembles Fissurina dumastii and F. subnitidula, but is distinguished by its larger lirellae (8–13 mm long). Other species with trans-septate ascospores, such as Fissurina columbina, F. quadrispora, and F. dumastioides, produce various lichen substances and have much larger ascospores. Meanwhile, F. glauca, an Australian species, has smaller ascomata, measuring 1–3 mm in length.[2]
References
- ↑ "Fissurina longiramea Makhija & Adaw.". Species 2000: Naturalis, Leiden, the Netherlands. https://www.catalogueoflife.org/data/taxon/6J5CZ.
- ↑ 2.0 2.1 2.2 2.3 Makhija, Urmila; Adawadkar, Bharati (2007). "Trans-septate species of Acanthothecis and Fissurina from India". The Lichenologist 39 (2): 165–185. doi:10.1017/s0024282907004756.
Wikidata ☰ Q17387884 entry
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