Ciri dan struktur
Ochrolechia cooperi forms a crust-like thallus that sits tightly on its substrate and breaks into a fine network of cracks (). A patch rarely exceeds 5–7 cm across but can be up to 1.2 mm thick. The surface is a creamy white, though it is speckled with scattered coral-shaped isidia—tiny, finger-like outgrowths 0.1–0.5 mm wide that begin as pinkish-tan warts and branch upward. Some specimens bear isidia across most of the thallus, while others have broad isidia-free areas. No dark border () is visible at the margin. The lichen's photosynthetic partner is a green alga with nearly spherical cells 10–15 μm in diameter, each surrounded by a clear wall about 1 μm thick. Rounded fruiting bodies (apothecia) 0.8–2.4 mm wide have been found on only one studied specimen. They sit flush with the surface and eventually hollow out, suggesting that spore production may often abort. The outer rim derived from the thallus is thick and whitish, while the inner fungal rim measures about 50 μm across. In section, the outer wall () is about 190 μm thick at the sides and 310 μm at the base, with the algae appearing in small isolated patches. The spore-forming layer (hymenium) can reach 200 μm tall; it is colorless but turns hazy aqua blue in iodine and is sprinkled with crystals that dissolve to pale yellow in potassium hydroxide (KOH) solution. Supporting filaments (paraphyses) are slender—only 1.8 μm thick in mid-section—and loosen in KOH. The basal tissue () is a faint cream and up to 90 μm thick. Club-shaped asci measure about 155 × 58 μm and swell dramatically in KOH, but mature spores have not yet been observed, and no asexual structures are known.
Habitat dan peran ekologis
Ochrolechia cooperi has so far been found only in the coastal lowlands of southeastern and south-central Alaska. Verified collections come from Glacier Bay National Park (Falls Creek, Dundas Bay, Excursion Ridge, and the Gustavus area), Frederick Sound on the north shore of Mitkof Island, Chugach National Forest, and Kenai Fjords National Park, where several sites cluster around Three Hole Bay on the Aialik Peninsula. All records lie between sea level and roughly 250 m elevation. The lichen colonizes intact bark or decorticated wood of living or fallen conifers—chiefly Sitka spruce (Picea sitchensis) and mountain hemlock (Tsuga mertensiana)—in humid muskeg "tree islands", pond margins, and other wet forest settings. It favors shaded, persistently damp microsites where the substrate retains moisture year-round, such as moss-covered logs and lower trunk bases.
- Habitat atau konteks temuan
- hutan
- Substrat
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Reproduksi
Ochrolechia cooperi forms a crust-like thallus that sits tightly on its substrate and breaks into a fine network of cracks (). A patch rarely exceeds 5–7 cm across but can be up to 1.2 mm thick. The surface is a creamy white, though it is speckled with scattered coral-shaped isidia—tiny, finger-like outgrowths 0.1–0.5 mm wide that begin as pinkish-tan warts and branch upward. Some specimens bear isidia across most of the thallus, while others have broad isidia-free areas. No dark border () is visible at the margin. The lichen's photosynthetic partner is a green alga with nearly spherical cells 10–15 μm in diameter, each surrounded by a clear wall about 1 μm thick. Rounded fruiting bodies (apothecia) 0.8–2.4 mm wide have been found on only one studied specimen.
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
Voucher herbarium Ochrolechia cooperi (04257670), The New York Botanical Garden. Identifikasi mengikuti record spesimen sumber. Foto bahan, kemasan, atau label herbarium sebagaimana tersedia pada record institusi; bukan foto lapangan atau penentuan spesimen independen.
- Jenis
- Voucher herbarium
- Kredit
- The New York Botanical Garden
- Lisensi
- CC BY 4.0
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- Buka entri sumber
Sumber profil
- [1] Ochrolechia cooperi — Wikipedia (en)
- [2] Catalogue of Life Base2026-09-11 — Ochrolechia cooperi
- [3] Dokumentasi visual — Ochrolechia cooperi
Rujukan halaman ini
Fungi. Ochrolechia cooperi. Rilis data fungi-2026-10-12-expansion-2. https://fungi-atlas.mgadib.chatgpt.site/jamur/ochrolechia-cooperi/.
Status: impor sumber; pemeriksaan editorial per profil belum selesai. Untuk klaim biologis, gunakan rujukan pada bagian terkait dan periksa konteks sumber aslinya.
