Arthonia radiata

Ciri dan struktur

Arthonia radiata is a crustose lichen with an immersed thallus, often separated from its surroundings by a thin brown line. The thallus is typically pale, ranging from white to pale grey, sometimes with a brown or olive tinge, and often forms a mosaic-like pattern on its . Its reproductive structures, called apothecia, are black and can appear in various shapes—rounded, star-like (stellate), or elongated. These apothecia can measure between 0.15 and 2.2 mm across, and are usually flat or slightly convex. They lack a frosted appearance, often referred to as being non-. Under a microscope, the apothecia have a thin (the upper layer) that is brown or olive-brown, reacting to certain chemical tests by turning pale green. The internal structure includes a clear hymenium (spore-producing layer) and a hypothecium (the layer beneath) that is also colourless to pale olive-brown. The (sterile filaments within the hymenium) are narrow, 1–2 μm wide, but can expand to 3 μm, and they are often capped with darker brown tips. Arthonia radiata produces spores that are cylindric-obovoid to cylindrical, with 3 internal walls (septa) dividing the spore into 4 cells. These ascospores measure between 15 and 20 μm long and 4.5 to 6 μm wide, and the uppermost cell is not enlarged. While its asexual reproductive structures, pycnidia, are rare, they are immersed in the thallus and black, with a pale green reaction in chemical tests. These structures release small, rod-like conidia (asexual spores), about 4–5 μm long. No secondary metabolites, often used to identify lichen species, have been detected in Arthonia radiata using thin-layer chromatography.

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Rujukan: [1]

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Habitat dan peran ekologis

Arthonia radiata is a widespread and common species. It grows on the smooth bark of many trees and shrubs.

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Rujukan: [1]

Habitat atau konteks temuan

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Substrat

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Peran atau konteks

Pembentuk liken

Reproduksi

Arthonia radiata is a crustose lichen with an immersed thallus, often separated from its surroundings by a thin brown line. The thallus is typically pale, ranging from white to pale grey, sometimes with a brown or olive tinge, and often forms a mosaic-like pattern on its . Its reproductive structures, called apothecia, are black and can appear in various shapes—rounded, star-like (stellate), or elongated. These apothecia can measure between 0.15 and 2.2 mm across, and are usually flat or slightly convex. They lack a frosted appearance, often referred to as being non-. Under a microscope, the apothecia have a thin (the upper layer) that is brown or olive-brown, reacting to certain chemical tests by turning pale green.

Sebagian uraian ditampilkan dalam bahasa sumber; terjemahannya belum tersedia atau belum lolos pemeriksaan.

Rujukan: [1]

Catatan identitas dan cakupan

• Nama diterima mengikuti Catalogue of Life Base2026-09-11; uraian mempertahankan konsep dan nama sumber aslinya.
• Original geographic, specimen and life-cycle scope retained; source import awaits individual editorial review.
• Impor dan terjemahan otomatis belum diperiksa editorial per profil. Struktur reproduktif yang disebutkan tidak membuktikan seluruh siklus hidup diketahui.
• Pengukuran pada uraian mengikuti spesimen, kultur, dan metode sumber; angka tidak diperluas ke semua populasi.

Melihat dengan konteks

Dokumentasi Arthonia radiata menurut asosiasi foto pada record takson iNaturalist. Kredit: Peter de Lange. Identitas mengikuti sumber; bukan penentuan spesimen independen.

Jenis

Fotografi

Kredit

no rights reserved, uploaded by Peter de Lange

Lisensi

CC0 1.0

Sumber media

Buka entri sumber

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Dokumentasi tambahan

Sumber profil

1. [1] Arthonia radiata — Wikipedia (en)Bagian sumber: Frozen revision 1325100332
   Tanggal penghimpunan sumber: 2026-10-12
   Teks sumber: CC BY-SA4.0 · Wikipedia contributors
2. [2] Catalogue of Life Base2026-09-11 — Arthonia radiataBagian sumber: ColDP NameUsage.tsv ID GXLM; accepted species; source 2073
   Tanggal penghimpunan sumber: 2026-10-12
3. [3] Dokumentasi visual — Arthonia radiataBagian sumber: Identitas mengikuti sumber dokumentasi; bukan penentuan spesimen independen.
   Tanggal penghimpunan sumber: 2026-10-17
   Media sumber: CC0 1.0 · no rights reserved, uploaded by Peter de Lange
4. [4] Dokumentasi visual — Arthonia radiataBagian sumber: Identitas mengikuti sumber dokumentasi; bukan penentuan spesimen independen.
   Tanggal penghimpunan sumber: 2026-10-17
   Teks sumber: CC0 1.0 · no rights reserved, uploaded by Peter de Lange