Melanconis larissae

Ciri dan struktur

Melanconis larissae differs from M. stilbostoma by α-conidia having a broad diffuse light-coloured zone. Sexual morph: Pseudostromata 1.8–2.7 mm diam., scattered to aggregated, not or only scarcely projecting from the bark surface, pulvinate, circular to elliptical in outline; consisting of an ectostromatic disc and perithecia embedded in an entostroma around a central column and sometimes conidial locules present on the ostiolar level. Ectostromatic discs 0.5–1.4 mm diam. or long, slightly projecting, fusoid to circular, flat or concave, white to yellow, often concealed by ostioles; central column beneath disc brightly white at upper levels, yellow amongst ostiolar necks at lower levels, consisting of hyaline hyphae and colourless crystals. Ostiolar necks cylindrical, laterally or centrally attached on perithecia, convergent and irregularly inserted in the disc; visible part (88–)130–204(–230) µm (n = 32) diam., 1–12 per disc, black, subglobose to subconical with flat or pointed tips, projecting to 200 µm. Entostroma consisting of hyaline hyphae and bark cells. Perithecia (420–)490–650(–690) µm (n = 14) diam., arranged in valsoid configuration around and below central column, globose to subglobose, collapsing up- or laterally inwards upon drying. Peridium pseudoparenchymatous, consisting of a dark brown small-celled outer and a hyaline to brownish, large-celled inner layer. Hamathecium absent at maturity. Asci floating free at maturity, (69–)84–106(–117) × (11–)13–17.5(–19.7) µm (n = 22), fusoid to oblong, with an apical ring distinct in water and staining in Congo Red, but invisible or indistinct in 3% KOH, containing (2–)4–8 ascospores in biseriate or obliquely uniseriate arrangement.

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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

Melanconis larissae is known from a single specimen collected in New York State from an unidentified species of Betula.

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Rujukan: [1]

Habitat atau konteks temuan

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Substrat

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Peran atau konteks

Belum dikategorikan pada rilis ini.

Reproduksi

Melanconis larissae differs from M. stilbostoma by α-conidia having a broad diffuse light-coloured zone. Sexual morph: Pseudostromata 1.8–2.7 mm diam., scattered to aggregated, not or only scarcely projecting from the bark surface, pulvinate, circular to elliptical in outline; consisting of an ectostromatic disc and perithecia embedded in an entostroma around a central column and sometimes conidial locules present on the ostiolar level. Ectostromatic discs 0.5–1.4 mm diam. or long, slightly projecting, fusoid to circular, flat or concave, white to yellow, often concealed by ostioles; central column beneath disc brightly white at upper levels, yellow amongst ostiolar necks at lower levels, consisting of hyaline hyphae and colourless crystals.

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

Melanconis larissae holotype (BPI 870998) a–o sexual morph a, b ectostromatic discs c, d cross sections showing white upper and yellow lower parts of central columns, ostiolar necks and perithecia e–g asci h–o ascospores f, g in aqueous Congo Red p–y asexual morph p conidial deposit q conidioma in cross section r, s conidiophores and conidiogenous cells (showing annellations in s) t–y α-conidia r–y in 3% KOH. Scale bars: 500 µm (a–d, p, q), 15 µm (e–g), 7 µm (h–o, r), 5 µm (s–y).

Jenis

Pelat ilmiah

Kredit

Walter M. Jaklitsch, Hermann Voglmayr

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] The genus Melanconis (Diaporthales) — Melanconis larissaeBagian sumber: PMC7062851_section_33
   Tanggal penghimpunan sumber: 2026-10-12
   Teks sumber: CC BY 4.0 · Jaklitsch WM, Voglmayr H.
2. [2] Catalogue of Life Base2026-09-11 — Melanconis larissaeBagian sumber: ColDP NameUsage.tsv ID 9ZBGR; accepted species; source 2073
   Tanggal penghimpunan sumber: 2026-10-12
3. [3] Dokumentasi visual — Melanconis larissaeBagian sumber: Individual media record; identification follows the source, not independent determination
   Tanggal penghimpunan sumber: 2026-10-12
   Media sumber: CC BY 4.0 · Walter M. Jaklitsch, Hermann Voglmayr