Tetramelas pulverulentus

Ciri dan struktur

Tetramelas pulverulentus is an inconspicuous, lichen-dwelling fungus that lives within the white inner layer (medulla) of its host lichen rather than forming an obvious surface crust of its own. Even so, it develops a very thin outer skin () only 10–20 μm high, beneath which it houses its own microscopic green algal partner () and therefore functions as an independent lichen at this stage of its life cycle. The reproductive bodies are tiny, blackish (apothecia) 0.3–0.5 mm across—occasionally reaching 0.7 mm—that sit on the surface of the host. Each apothecium is ringed by a permanently dark-pigmented rim () made of rounded, thick-walled cells, while the uppermost layer () is brown. Beneath this lies the clear, spore-producing tissue (hymenium), 55–77 μm tall and lacking the oil droplets found in some related species. A darker supportive layer () underpins the hymenium. Thread-like hyphae called paraphyses, only about 2 μm wide but swelling to 5 μm at their tips, weave through the hymenium. Each club-shaped ascus typically contains eight brown ascospores measuring 16–21 μm long (occasionally 14.5–23 μm) and 6.5–8.5 μm wide; the spores are one- to three-celled and bear a fine, warty ornamentation. Asexual reproductive structures (pycnidia) are uncommon, but when present they release colourless, rod-shaped conidia about 5–6 μm long and 1 μm wide. Thin-layer chromatography has not detected any lichen products in this species.

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

Rujukan: [1]

Pengukuran mengikuti objek, spesimen atau kultur, dan metode yang disebutkan sumber. Baca uraian asli untuk konteks lengkap.

Habitat dan peran ekologis

The reproductive bodies are tiny, blackish (apothecia) 0.3–0.5 mm across—occasionally reaching 0.7 mm—that sit on the surface of the host. Each apothecium is ringed by a permanently dark-pigmented rim () made of rounded, thick-walled cells, while the uppermost layer () is brown. Beneath this lies the clear, spore-producing tissue (hymenium), 55–77 μm tall and lacking the oil droplets found in some related species. A darker supportive layer () underpins the hymenium. Thread-like hyphae called paraphyses, only about 2 μm wide but swelling to 5 μm at their tips, weave through the hymenium. Each club-shaped ascus typically contains eight brown ascospores measuring 16–21 μm long (occasionally 14.5–23 μm) and 6.5–8.5 μm wide; the spores are one- to three-celled and bear a fine, warty ornamentation.

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

Rujukan: [1]

Habitat atau konteks temuan

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Substrat

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Peran atau konteks

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Reproduksi

The reproductive bodies are tiny, blackish (apothecia) 0.3–0.5 mm across—occasionally reaching 0.7 mm—that sit on the surface of the host. Each apothecium is ringed by a permanently dark-pigmented rim () made of rounded, thick-walled cells, while the uppermost layer () is brown. Beneath this lies the clear, spore-producing tissue (hymenium), 55–77 μm tall and lacking the oil droplets found in some related species. A darker supportive layer () underpins the hymenium. Thread-like hyphae called paraphyses, only about 2 μm wide but swelling to 5 μm at their tips, weave through the hymenium. Each club-shaped ascus typically contains eight brown ascospores measuring 16–21 μm long (occasionally 14.5–23 μm) and 6.5–8.5 μm wide; the spores are one- to three-celled and bear a fine, warty ornamentation.

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

Ilustrasi skematis garis luar konidium Tetramelas pulverulentus, berdasarkan uraian sumber; ukuran yang dilaporkan 5–6 × 1 µm. Proporsi disederhanakan, bukan salinan satu spesimen. Ornamen permukaan, warna, sekat, dan isi sel tidak direkonstruksi. Sumber menyebut konidia berbentuk batang sekitar 5–6 × 1 µm. Skema hanya garis luar; warna dan isi sel tidak direkonstruksi.

Jenis

Ilustrasi skematis

Kredit

Fungi, ilustrasi orisinal (2026); fakta morfologi berdasarkan Wikipedia contributors

Lisensi

CC BY-SA 4.0

Sumber media

Buka entri sumber

Gambar menunjukkan objek menurut identifikasi sumber, bukan verifikasi independen spesimen oleh Fungi. Tidak ada skala baru yang ditambahkan.

Sumber profil

1. [1] Tetramelas pulverulentus — Wikipedia (en)Bagian sumber: Frozen revision 1374736914
   Tanggal penghimpunan sumber: 2026-10-12
   Media sumber: CC BY-SA4.0 · Wikipedia contributors
2. [2] Catalogue of Life Base2026-09-11 — Tetramelas pulverulentusBagian sumber: ColDP NameUsage.tsv ID 55P5M; accepted species; source 2073
   Tanggal penghimpunan sumber: 2026-10-12