Halegrapha mucronata

Ciri dan struktur

Halegrapha mucronata is a bark-dwelling crustose lichen forming a continuous thallus that is typically white-grey, with a smooth to uneven surface and no . Thalli form diffuse patches up to about 10 cm wide that often fuse into extensive colonies; the thallus is typically about 30–120 μm thick. Calcium oxalate crystals are abundant, especially between the and the . In section it has a firm, upper cortex, an uneven photobiont layer, and conspicuous clusters of crystals in the thallus. The fruiting bodies are black that are dense and , usually only sparsely branched, and immersed to . The black lirellae are scattered to crowded, usually simple or only sparsely branched, and straight to sinuous; they are about 0.8–4 mm long and 0.2–0.3 mm wide, with a thin basal and a usually concealed black disc. The is usually concealed but can be slightly exposed, and the lips () are black and remain entire. Microscopically, the is mainly along the sides (sometimes converging beneath the hymenium), and the hymenium is colourless and clear (not ). The asci produce eight brown ascospores. Ascospores are transversely 7–12-septate and (30–)34–57(–64) × 7–11(–11.5) μm; they begin hyaline, become pale brown, and may become deep brown and somewhat deformed with age. A hyaline extension about 2–5 μm long occurs at both ends, or sometimes only at the distal end. Thin-layer chromatography (TLC) detected norstictic acid as the major lichen substance (with connorstictic acid as a minor component), and thallus sections show a K+ (yellow) reaction that forms red needle-shaped crystals under the microscope.

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Rujukan: [1]

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Habitat dan peran ekologis

Halegrapha mucronata is corticolous, growing on bark. In Tasmania it is very common and widespread in coastal districts (including the Bass Strait islands), and it often becomes the dominant epiphyte in coastal scrub dominated by Acacia longifolia subsp. sophorae, where it can form extensive thalli alongside Lecanora flavopallida and Flavoparmelia rutidota. Inland it is less frequent, where it has been recorded on garden trees and in dry and wet sclerophyll forest and heathland, and it has been collected rarely from canopy branches in rainforest. More broadly, the species is reported from Australia and New Zealand. In the 2011 revision that established Halegrapha, the nomenclatural types discussed for H. mucronata were from New South Wales, including collections from the Riverina district and the Nepean River area. In Tasmanian literature it has also been treated under the name Phaeographis australiensis.

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Rujukan: [1]

Habitat atau konteks temuan

hutan

Substrat

kulit kayu

Peran atau konteks

Pembentuk liken

Reproduksi

The fruiting bodies are black that are dense and , usually only sparsely branched, and immersed to . The black lirellae are scattered to crowded, usually simple or only sparsely branched, and straight to sinuous; they are about 0.8–4 mm long and 0.2–0.3 mm wide, with a thin basal and a usually concealed black disc. The is usually concealed but can be slightly exposed, and the lips () are black and remain entire. Microscopically, the is mainly along the sides (sometimes converging beneath the hymenium), and the hymenium is colourless and clear (not ). The asci produce eight brown ascospores. Ascospores are transversely 7–12-septate and (30–)34–57(–64) × 7–11(–11.5) μm; they begin hyaline, become pale brown, and may become deep brown and somewhat deformed with age.

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.
• Original geographic, specimen and life-cycle scope retained; source import awaits individual editorial review.
• 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

Dokumentasi Halegrapha mucronata menurut asosiasi foto pada record takson iNaturalist. Kredit: Peter de Lange. Identitas mengikuti sumber; bukan penentuan spesimen independen.

Jenis

Fotografi

Kredit

no rights reserved, uploaded by Peter de Lange

Lisensi

CC0 1.0

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] Halegrapha mucronata — Wikipedia (en)Bagian sumber: Frozen revision 1333225953
   Tanggal penghimpunan sumber: 2026-10-12
   Teks sumber: CC BY-SA4.0 · Wikipedia contributors
2. [2] Catalogue of Life Base2026-09-11 — Halegrapha mucronataBagian sumber: ColDP NameUsage.tsv ID 6L9SW; accepted species; source 2073
   Tanggal penghimpunan sumber: 2026-10-12
3. [3] Dokumentasi visual — Halegrapha mucronataBagian sumber: Identitas mengikuti sumber dokumentasi; bukan penentuan spesimen independen.
   Tanggal penghimpunan sumber: 2026-10-17
   Media sumber: CC0 1.0 · no rights reserved, uploaded by Peter de Lange
4. [4] Dokumentasi visual — Halegrapha mucronataBagian sumber: Identitas mengikuti sumber dokumentasi; bukan penentuan spesimen independen.
   Tanggal penghimpunan sumber: 2026-10-17
   Teks sumber: CC0 1.0 · no rights reserved, uploaded by Peter de Lange