Ciri dan struktur
This lichen forms a powdery crust with edges that are either diffuse or poorly defined. It lacks and has no medulla or base layer (). The thallus is crustose, leprose, and aggregated, appearing discontinuous and not stratified. It initially forms isolated granules that divide to form aggregations, eventually merging to form a thin crust (less than 0.1 mm thick), gray-blue in color. The reproductive structures consist of well-organized and discrete spherical () granules, typically 35–59 μm in diameter (range 24–76 μm). These granules are ecorticate and remain distinct rather than forming compound units. The photobiont is green and coccoid, with globose cells typically 8–12 μm in width (range 6–16 μm). The hyphae are hyaline, typically 2–4 μm in width (range 1.8–5 μm), and are septate and obscured by a thick layer of crystals that appear bright under polarized light (POL+), which dissolve in KOH solution and recrystallize as thin bent needles. The main chemical constituents are atranorin, zeorin, and pallidic acid. Some specimens have been found to also contain roccellic/angardianic acid or an unidentified fatty acid. The expected results of chemical spot tests are K+ (yellow), C−, KC−, and P+ (weak yellow), and UV−.
Habitat dan peran ekologis
Lepraria caesiella is common and widely distributed throughout temperate and boreal northeastern North America, extending southward in the Appalachian Mountains. The species occurs on a wide diversity of bark-bearing (corticolous) substrates, including both conifers and hardwoods, though the majority of corticolous collections are from hardwoods, particularly oaks (Quercus). Disjunct saxicolous populations also occur in the Ozark ecoregion. While primarily a corticolous species, it can also be found on noncalcareous rocks. These saxicolous populations are ecologically distinct from other sympatric Lepraria species because they occur on dry, protected rock faces that are sheltered from rain but still exposed to some light. This differs from most other species which occur either on rock faces fully exposed to the elements, or in shaded overhangs that are completely protected and always shaded.
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Reproduksi
The reproductive structures consist of well-organized and discrete spherical () granules, typically 35–59 μm in diameter (range 24–76 μm). These granules are ecorticate and remain distinct rather than forming compound units. The photobiont is green and coccoid, with globose cells typically 8–12 μm in width (range 6–16 μm). The hyphae are hyaline, typically 2–4 μm in width (range 1.8–5 μm), and are septate and obscured by a thick layer of crystals that appear bright under polarized light (POL+), which dissolve in KOH solution and recrystallize as thin bent needles.
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.
Catatan distribusi dalam narasi mengikuti sumbernya. Dokumentasi spesimen atau foto mengikuti catatan sumber. Bukti wilayah Indonesia dan penilaian konservasi tidak disimpulkan dari gambar.
Melihat dengan konteks
Dokumentasi Lepraria caesiella menurut asosiasi foto pada record takson iNaturalist. Kredit: Bonnie Semmling. Identitas mengikuti sumber; bukan penentuan spesimen independen.
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- (c) Bonnie Semmling, some rights reserved (CC BY), uploaded by Bonnie Semmling
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- CC BY 4.0
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Sumber profil
- [1] Lepraria caesiella — Wikipedia (en)
- [2] Catalogue of Life Base2026-09-11 — Lepraria caesiella
- [3] Dokumentasi visual — Lepraria caesiella
Rujukan halaman ini
Fungi. Lepraria caesiella. Rilis data fungi-2026-10-12-expansion-2. https://fungi-atlas.mgadib.chatgpt.site/jamur/lepraria-caesiella/.
Status: impor sumber; pemeriksaan editorial per profil belum selesai. Untuk klaim biologis, gunakan rujukan pada bagian terkait dan periksa konteks sumber aslinya.
