Porpidia flavicunda

Ciri dan struktur

Porpidia flavicunda spreads as a bright yellow-orange crust on siliceous rock, each colony neatly bounded by a narrow, black, felt-like line of fungal threads (the prothallus) that keeps neighbouring thalli apart. The surface is usually even, but a hand lens reveals a mosaic of minute that coalesce into a continuous coating. Black fruiting discs (apothecia) commonly pepper the thallus, either singly or gathered in small clusters of up to ten. They begin sunk within the thallus but soon sit on top as shallow bowls, later becoming almost level and finally domed. Crowding causes the outlines to turn from round to irregular. A conspicuous, raised rim made purely of fungal tissue (the ) encircles each disc and persists even on old specimens. The itself is matt to slightly glossy and often dusted with a fine, whitish bloom; in very mature apothecia the centre may split into wrinkled, sterile islands. Microscopically, the clear hymenium stands 85–150 micrometres (μm) tall beneath a thin, olive-tinged brown cap (). Supporting layers grade from pale yellow-brown just below the hymenium to a dark reddish-brown base (). The asci produce smooth, single-celled ascospores measuring 15–19 × 8.5–10 μm that are released to start new colonies. Spot-test chemistry shows confluentic acid as the dominant substance in European material; North American populations sometimes contain stictic and/or norstictic acids instead. No other lichen products are consistently reported.

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Rujukan: [1]

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Habitat dan peran ekologis

Porpidia flavicunda has a circumpolar arctic and boreal distribution. There are indications P. flavicunda populations frequently spread their propagules to other populations, even on different continents, resulting in low amounts of genetic drift in isolated populations and a higher than expected genetic uniformity between continents. Porpidia flavicunda is among the most common and widely seen lichens in Iceland where it grows on rocks.

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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

Black fruiting discs (apothecia) commonly pepper the thallus, either singly or gathered in small clusters of up to ten. They begin sunk within the thallus but soon sit on top as shallow bowls, later becoming almost level and finally domed. Crowding causes the outlines to turn from round to irregular. A conspicuous, raised rim made purely of fungal tissue (the ) encircles each disc and persists even on old specimens. The itself is matt to slightly glossy and often dusted with a fine, whitish bloom; in very mature apothecia the centre may split into wrinkled, sterile islands. Microscopically, the clear hymenium stands 85–150 micrometres (μm) tall beneath a thin, olive-tinged brown cap (). Supporting layers grade from pale yellow-brown just below the hymenium to a dark reddish-brown base ().

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 Porpidia flavicunda menurut asosiasi foto pada record takson iNaturalist. Kredit: Fotografer tidak dicantumkan. Sumber observasi iNaturalist; pengunggah: Alwyn Short. Identitas mengikuti sumber; bukan penentuan spesimen independen.

Jenis

Fotografi

Kredit

Fotografer tidak dicantumkan. Sumber observasi iNaturalist; pengunggah: Alwyn Short

Lisensi

CC0 1.0

Sumber media

Buka entri sumber

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Dokumentasi tambahan

Sumber profil

1. [1] Porpidia flavicunda — Wikipedia (en)Bagian sumber: Frozen revision 1340123867
   Tanggal penghimpunan sumber: 2026-10-12
   Teks sumber: CC BY-SA4.0 · Wikipedia contributors
2. [2] Catalogue of Life Base2026-09-11 — Porpidia flavicundaBagian sumber: ColDP NameUsage.tsv ID 4LZDV; accepted species; source 2073
   Tanggal penghimpunan sumber: 2026-10-12
3. [3] Dokumentasi visual — Porpidia flavicundaBagian sumber: Identitas mengikuti sumber dokumentasi; bukan penentuan spesimen independen.
   Tanggal penghimpunan sumber: 2026-10-17
   Media sumber: CC0 1.0 · Fotografer tidak dicantumkan. Sumber observasi iNaturalist; pengunggah: Alwyn Short
4. [4] Dokumentasi visual — Porpidia flavicundaBagian sumber: Identitas mengikuti sumber dokumentasi; bukan penentuan spesimen independen.
   Tanggal penghimpunan sumber: 2026-10-17
   Teks sumber: CC0 1.0 · no rights reserved