Mycosphaerangium tetrasporum

Ciri dan struktur

Sexual morph: Apothecia 0.4–2-mm diam, erumpent from bark, solitary or in groups of 2–5, sessile, without a basal stroma, forming circular to irregular plane to concave discs. Receptacle dark red-brown and scaly and the raised margin slightly paler. Hymenium roughened, dark brown to black. Ectal excipulum consisting of a 50–100-μm-thick layer, narrower at the margin, of dark orange brown textura globulosa-angularis, cells (9–)13–23(–28)-μm diam, with walls 1–2 μm thick. Medullary excipulum consisting of orange brown textura globulosa-angularis, cells (7–)13–24(–33)-μm diam. Subhymenium made of hyaline to pale brown textura intricata of densely interwoven thin-walled hyphae. Paraphyses ca. 250–310 μm long, 2.5–4.8 μm wide, cylindrical, hyaline, septate, branched, longer than the asci, with swollen, club-shaped red brown tips 5–11 μm wide, not encrusted. Asci 185–265(–305) × (26–)29–38(−42) μm (n = 29), cylindrical-clavate, unitunicate, with rounded to subtruncate apex, inamyloid, without visible apical apparatus, containing 4 uniseriately arranged ascospores, base tapering, with simple septum. Ascus dehiscence unknown. Ascospores (23.5–)26.5–31.5(−34) × (18.5–)23–27(–29) μm, l/w = (1.0–)1.1–1.2(–1.4), Me = 29 × 25 μm, Qe = 1.15 (n = 88), globose to ellipsoid, first hyaline, turning pale brown and finally dark brown to nearly black when mature, containing a large globose oil drop, walls verruculose and appearing rough in profile view, with a prominent refractive gelatinous sheath widely expanding in released spores. Asexual morph: Conidiomata acervular, subperidermal, scattered, scarcely raising the bark and becoming visible in the dry state by black irregular spots of distinctly glossy conidia and sometimes small bumps in the bark after the discharge of the conidia through bark fissures.

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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

Habitat: on dead corticated branches of Quercus spp. (Q. coccinea, Q. rubra), constantly associated with effete conidiomata or stromata of Coryneum spp. Distribution: Eastern North America (USA, Canada).

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Rujukan: [1]

Habitat atau konteks temuan

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Substrat

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Peran atau konteks

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Reproduksi

Sexual morph: Apothecia 0.4–2-mm diam, erumpent from bark, solitary or in groups of 2–5, sessile, without a basal stroma, forming circular to irregular plane to concave discs. Receptacle dark red-brown and scaly and the raised margin slightly paler. Hymenium roughened, dark brown to black. Ectal excipulum consisting of a 50–100-μm-thick layer, narrower at the margin, of dark orange brown textura globulosa-angularis, cells (9–)13–23(–28)-μm diam, with walls 1–2 μm thick. Medullary excipulum consisting of orange brown textura globulosa-angularis, cells (7–)13–24(–33)-μm diam. Subhymenium made of hyaline to pale brown textura intricata of densely interwoven thin-walled hyphae. Paraphyses ca. 250–310 μm long, 2.5–4.8 μm wide, cylindrical, hyaline, septate, branched, longer than the asci, with swollen, club-shaped red brown tips 5–11 μm wide, not encrusted.

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

Mycosphaerangium tetrasporum, sexual morph ((a – c, g, i, l – o, q – u, w, x) GZU 000335639, lectotype; (d–f, h, j, k, p, v) WU 40040). (a–c) Apothecia in face view. (d) Apothecium margin in section. (e) Marginal excipulum in section. (f) Medulla in section. (g) Ectal excipulum cells in squash mount. (h) Paraphyses and immature asci. (i – k) Swollen, reddish brown paraphysis tips. (l) Mature ascus with four ascospores surrounded by thick gelatinous sheaths. (m – o) Ascus apices ((m, n) immature). (p, q) Ascus bases with simple septa. (r – w) Ascospores (in (r) showing widely expanded gelatinous sheath and distinctly verruculose wall; (x, y) verruculose contours and wall in face view). All mounts dead and in 3% KOH, except (p, q) in Congo red. Scale bars: (a, b) 500 μm; (c, d) 200 μm; (e) 30 μm; (f – k, m – w, y) 10 μm; (l) 20 μm; (x) 2 μm

Jenis

Pelat ilmiah

Kredit

© The Author(s) 2020

Lisensi

CC BY 4.0

Sumber media

Buka entri sumber

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Dokumentasi tambahan

Sumber profil

1. [1] Mycosphaerangium and Neomelanconium (Cenangiaceae) are closest relatives: phylogenetic relationships, morphology and a new species — Mycosphaerangium tetrasporumBagian sumber: Sec11_paragraph_29
   Tanggal penghimpunan sumber: 2026-10-12
   Teks sumber: CC BY 4.0 · Voglmayr H, Jaklitsch WM, Tello S.
2. [2] Catalogue of Life Base2026-09-11 — Mycosphaerangium tetrasporumBagian sumber: ColDP NameUsage.tsv ID 73S8F; accepted species; source 2073
   Tanggal penghimpunan sumber: 2026-10-12
3. [3] Dokumentasi visual — Mycosphaerangium tetrasporumBagian sumber: Identitas mengikuti sumber dokumentasi; bukan penentuan spesimen independen.
   Tanggal penghimpunan sumber: 2026-10-17
   Media sumber: CC BY 4.0 · © The Author(s) 2020
4. [4] Dokumentasi visual — Mycosphaerangium tetrasporumBagian sumber: Identitas mengikuti sumber dokumentasi; bukan penentuan spesimen independen.
   Tanggal penghimpunan sumber: 2026-10-17
   Teks sumber: CC BY 4.0 · © The Author(s) 2020