Rhytidhysteron esperanzae

Ciri dan struktur

Different from most Rhytidhysteron species by having greyish-green ascomata with greenish-grey to yellow epithecium in the presence of KOH, and large and wide ascospores (45–47 × 17–19 μm). Ascomata hysterothecial to apothecial, (2–)3–4.5 mm long, (1.2–)2–3 mm wide, (1–)1.7–2.4 mm high, superficial, solitary, rarely gregarious, boat-shaped hysterothecia, elongated, straight or flexuous, with sharp ends, opening in a discoid shape when ripe or with humidity, exposing the hymenium, taking the apothecial shape of 3–4 mm in diameter, brown (6D7), dull-green (30E4) to black. Margin involute, perpendicularly striate, greyish green (30C4) to dull green (30D4). Exciple integrated in two layers, the first carbonaceous, glabrous, 60–220 μm wide, thinning in the apical part, the middle part and the base are thicker, composed of pseudoparenchymal cells of textura globulosa-angularis (isodiametric cells), 11 × 10 μm, thick-walled, 3 μm wide, the second slightly pigmented to hyaline, thin-walled. Pseudoparaphyses up to 4 μm wide, filamentous, capitate, apical part wider, straight, hyaline, with a septum, enclosed in a gelatinous matrix, strongly anastomosed above the asci. Epithecium dark green (30F4) to black, becoming yellow (2A7) in the presence of 10% KOH. Asci (250–)265–270 × (18–)19–20 μm, bitunicate, cylindrical, rounded apex, hyaline, uniseriate, octosporic, thick-walled, with a short pedicel. Ascospores of (42–)45–47(–49) × (15–)17–19(–23) μm, (x̄= 45 × 17.2 μm, n = 30), ellipsoidal to spindle-shaped, rounded or pointed at both ends, reddish-brown to brown when mature, with three transverse septa, constricted at the septa, thick-walled and smooth.

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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 locality in a forest in La Esperanza, Mexico. Dead stems and twigs in tropical cloud forest dominated by Oreomunnea mexicana Standl. J.-F. Leroy (Juglandaceae).

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Rujukan: [1]

Habitat atau konteks temuan

hutan

Substrat

Informasi belum tersedia pada sumber rilis ini.

Peran atau konteks

Belum dikategorikan pada rilis ini.

Reproduksi

Different from most Rhytidhysteron species by having greyish-green ascomata with greenish-grey to yellow epithecium in the presence of KOH, and large and wide ascospores (45–47 × 17–19 μm). Ascomata hysterothecial to apothecial, (2–)3–4.5 mm long, (1.2–)2–3 mm wide, (1–)1.7–2.4 mm high, superficial, solitary, rarely gregarious, boat-shaped hysterothecia, elongated, straight or flexuous, with sharp ends, opening in a discoid shape when ripe or with humidity, exposing the hymenium, taking the apothecial shape of 3–4 mm in diameter, brown (6D7), dull-green (30E4) to black. Margin involute, perpendicularly striate, greyish green (30C4) to dull green (30D4). Exciple integrated in two layers, the first carbonaceous, glabrous, 60–220 μm wide, thinning in the apical part, the middle part and the base are thicker, composed of pseudoparenchymal cells of textura globulosa-angularis (isodiametric cells), 11 × 10 μm, thick-walled, 3 μm wide, the second slightly pigmented to 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 esperanzae (Holotype, T. Raymundo 6579) A appearance of ascomata apothecial on host B ascomata apothecial close-up, greyish-green to dull green and striated margin and dark green to 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 isodiametric cells (textura globulosa-angularis), 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 esperanzaeBagian sumber: PMC8455505_section_18
   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 esperanzaeBagian sumber: ColDP NameUsage.tsv ID B2MBW; accepted species; source 2073
   Tanggal penghimpunan sumber: 2026-10-12
3. [3] Dokumentasi visual — Rhytidhysteron esperanzaeBagian 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