Melanconis alni

Ciri dan struktur

Melanconis alni is recognised by ascospores having filiform, tapering appendages and dark brown α-conidia with a pale to subhyaline median area. Sexual morph: Pseudostromata developing in bark after the asexual morph and sometimes with acervuli of the asexual morph still present within their sides, 0.9–2.7 mm diam., scattered, pulvinate, more or less circular in outline, slightly projecting from the bark surface and then causing a greyish bark surface; consisting of an ectostromatic disc and perithecia embedded in an entostroma. Ectostromatic discs 0.3–1.4 mm diam., white to yellowish, brownish when old, flat to convex, circular, fusoid, angular or elongate in section, projecting up to 0.6 mm. Ostiolar necks cylindrical, laterally attached on perithecia and convergent in the disc, centrally only on centrally arranged perithecia, 1–15(–20) per disc, in the disc plane, convex to papillate and slightly projecting, with dark rounded tips; first pale brownish to greyish-brown, turning black, (70–)93–162(–210) µm (n = 33) diam. apically, mostly present at the margins but often also randomly within the disc. Entostroma bark-coloured, not or only slightly paler than the surrounding bark, consisting of bark cells and some light-coloured hyphae. Perithecia (390–)450–645(–765) µm (n = 24) diam., formed below overmature conidiomata in valsoid configuration, globose to subglobose, collapsing up- or laterally inwards upon drying. Hamathecium of wide multiguttulate paraphyses, collapsing, dissolving and usually absent amongst mature asci. Asci floating free at maturity, (68–)79–97(–110) × (10.5–)12.5–16.5(–21) µm (n = 114), narrowly clavate, fusoid, oblong to nearly ellipsoid, with an apical ring staining in Congo Red but invisible or indistinct in the strongly thickened apex in 3% potassium hydroxide (KOH), containing 8 biseriate ascospores.

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

Melanconis alni occurs in Europe on dead twigs and branches of Alnus glutinosa and A. incana, mainly at lower elevations.

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

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

Melanconis alni is recognised by ascospores having filiform, tapering appendages and dark brown α-conidia with a pale to subhyaline median area. Sexual morph: Pseudostromata developing in bark after the asexual morph and sometimes with acervuli of the asexual morph still present within their sides, 0.9–2.7 mm diam., scattered, pulvinate, more or less circular in outline, slightly projecting from the bark surface and then causing a greyish bark surface; consisting of an ectostromatic disc and perithecia embedded in an entostroma. Ectostromatic discs 0.3–1.4 mm diam., white to yellowish, brownish when old, flat to convex, circular, fusoid, angular or elongate in section, projecting up to 0.6 mm.

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 alni. Sexual morph a, b ectostromatic discs c pseudostroma with ectostromatic disc in face view d cross section showing remnants of asexual morph at the sides of the sexual pseudostroma e cross section showing perithecia with lateral ostiolar necks and central column f vertical section showing perithecium with central ostiolar neck g–j asci k, l ascus apices showing apical ring m–x ascospores j, l, w in aqueous Congo Red a, b, i WU 31885 = W.J. 148 c–f, j, o–q epitype WU 31884 = MAIV g, h, k, l, x WU 37043 = J.F. 10104 m lectotype PC 0723592 n WU 37042 = D156 r, s WU 31882 = MAMI t, u WU 31883 = MAW v WU 31887 = W.J. 1194 w WU 31886 = W.J. 178. Scale bars: 400 µm (a, b, d–f), 500 µm (c), 10 µm (g–j, n, s–u), 7 µm (k–m, o–r, v–x).

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.

Dokumentasi tambahan

Sumber profil

1. [1] The genus Melanconis (Diaporthales) — Melanconis alniBagian sumber: PMC7062851_section_14
   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 alniBagian sumber: ColDP NameUsage.tsv ID 72XRV; accepted species; source 2073
   Tanggal penghimpunan sumber: 2026-10-12
3. [3] Dokumentasi visual — Melanconis alniBagian sumber: Identitas mengikuti sumber dokumentasi; bukan penentuan spesimen independen.
   Tanggal penghimpunan sumber: 2026-10-17
   Media sumber: CC BY 4.0 · Walter M. Jaklitsch, Hermann Voglmayr
4. [4] Dokumentasi visual — Melanconis alniBagian sumber: Identitas mengikuti sumber dokumentasi; bukan penentuan spesimen independen.
   Tanggal penghimpunan sumber: 2026-10-17
   Teks sumber: CC BY 4.0 · Walter M. Jaklitsch, Hermann Voglmayr