Rhytidhysteron cozumelense

Ciri dan struktur

Differs from Rhytidhysteron rufulum in its host (Bignoniaceae), size of ascomata (2.5–3.5 × 1.1–1.5 × 1.0–1.9 mm), asci (182–191 × 12–13 μm) and its reaction with KOH being faster (one to five seconds). Ascomata hysterothecial to apothecial 2.5–3.5 mm long, 1.1–1.5 mm wide, (0.8)1.0–1.9 mm high, erumpent, solitary, boat-shaped hysterothecia, subglobose, elongated, compressed in the apex, with conspicuous longitudinal groove or cleft and becoming lenticular when mature or exposed to moisture, black, carbonaceous when dry. Margin involute, smooth to perpendicularly slightly striated, black. Exciple integrated in two layers, the first carbonaceous, glabrous, 45–100 μm thick, wide at the base, composed of pseudoparenchymal cells of textura prismatica (iso-radiating cells), thick-walled, the second composed of cells hyaline, thin-walled. Pseudoparaphyses up to 2.5 μm wide, filamentous, capitate, hyaline, septate, enclosed in a gelatinous matrix, strongly anastomosed above the asci. Epithecium reddish brown (8F7) when fresh, black in old specimens or when dry, becoming greyish magenta (13B5) in the presence of 10% KOH. Asci 182–191 × 12–13 μm, bitunicate, cylindrical, hyaline, uniseriate, octosporic, thick-walled, with a sinuous base. Ascospores 26–29(–31) × 9–11 (–13) μm, (x̄= 28 × 10.2 μm, n = 30), ellipsoidal to fusiform, rounded at both ends, dark brown in colour with three transverse septa, with a thick and smooth wall.

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Rujukan: [1]

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

Habitat dan peran ekologis

Known from a single local Island in the Cozumel Biosphere Reserve, Mexico. Dead twigs of Tabebuia rosea DC. (Bignoniaceae).

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Rujukan: [1]

Habitat atau konteks temuan

Informasi belum tersedia pada sumber rilis ini.

Substrat

Informasi belum tersedia pada sumber rilis ini.

Peran atau konteks

Belum dikategorikan pada rilis ini.

Reproduksi

Differs from Rhytidhysteron rufulum in its host (Bignoniaceae), size of ascomata (2.5–3.5 × 1.1–1.5 × 1.0–1.9 mm), asci (182–191 × 12–13 μm) and its reaction with KOH being faster (one to five seconds). Ascomata hysterothecial to apothecial 2.5–3.5 mm long, 1.1–1.5 mm wide, (0.8)1.0–1.9 mm high, erumpent, solitary, boat-shaped hysterothecia, subglobose, elongated, compressed in the apex, with conspicuous longitudinal groove or cleft and becoming lenticular when mature or exposed to moisture, black, carbonaceous when dry. Margin involute, smooth to perpendicularly slightly striated, black. Exciple integrated in two layers, the first carbonaceous, glabrous, 45–100 μm thick, wide at the base, composed of pseudoparenchymal cells of textura prismatica (iso-radiating cells), thick-walled, the second composed of cells hyaline, thin-walled.

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.
• Preserve original treatment localities, hosts and substrate scope. Materials examined describe documented specimens, not the full global range.
• 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

Rhytidhysteron cozumelense (Holotype, A. Cobos-Villagrán 951) A appearance of ascomata hysterothecial and apothecial on host B ascomata apothecial close-up, striated margin and black epithecium C–F microscopical features stained with alcohol (70%) and KOH (10%) reagent C ascomata apothecial cross-section with alcohol (70%) D exciple of iso-radiating cells (textura prismatica), close-up E asci F ascospores.

Jenis

Pelat ilmiah

Kredit

Aurora Cobos-Villagrán, Ricardo Valenzuela, César Hernández-Rodríguez, Rosa Paulina Calvillo-Medina, Lourdes Villa-Tanaca, Luz Elena Mateo-Cid, Abigail Pérez-Valdespino, César Ramiro Martínez-González, Tania Raymundo

Lisensi

CC BY 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] Three new species of Rhytidhysteron (Dothideomycetes, Ascomycota) from Mexico — Rhytidhysteron cozumelenseBagian sumber: PMC8455505_section_9
   Tanggal penghimpunan sumber: 2026-10-12
   Teks sumber: CC BY 4.0 · Cobos-Villagrán A, Valenzuela R, Hernández-Rodríguez C, Calvillo-Medina RP, Villa-Tanaca L, Mateo-Cid LE, Pérez-Valdespino A, Martínez-González CR, Raymundo T.
2. [2] Catalogue of Life Base2026-09-11 — Rhytidhysteron cozumelenseBagian sumber: ColDP NameUsage.tsv ID B2MBX; accepted species; source 2073
   Tanggal penghimpunan sumber: 2026-10-12
3. [3] Dokumentasi visual — Rhytidhysteron cozumelenseBagian sumber: Individual media record; identification follows the source, not independent determination
   Tanggal penghimpunan sumber: 2026-10-12
   Media sumber: CC BY 4.0 · Aurora Cobos-Villagrán, Ricardo Valenzuela, César Hernández-Rodríguez, Rosa Paulina Calvillo-Medina, Lourdes Villa-Tanaca, Luz Elena Mateo-Cid, Abigail Pérez-Valdespino, César Ramiro Martínez-González, Tania Raymundo