Lepraria incana

Ciri dan struktur

The thallus of Lepraria incana is leprose (powdery), and greenish grey in colour, often with blue tinge. It has a diffuse margin with neither distinct lobes, nor a distinct cortex, forming continuous patches with diameters up to about 8 cm, or forming smaller colonies of poorly developed patches or areoles. The thallus consists of abundant powdery soredia (little balls of algae wrapped in fungus hyphae) up to 50 μm in diameter. A medulla is sometimes present, but if so, it is usually poorly developed. Consoredia (diaspores made of aggregated soredia) are sometimes present, and they measure up to 110 μm. Overall, the appearance of the lichen can be quite variable, as sometimes it forms more or less loose cotton-like cushions, while other times it consists only of soredia that can be sparse or dense. The photobiont partner of the lichen is a spherical (coccoid) member of the green algal phylum Chlorophyta, with a diameter of up to 18 μm. In terms of secondary chemicals, Lepraria incana contains divaricatic acid, zeorin, and nordivaricatic acid (trace amounts). Some specimens have trace amounts of atranorin, although this may be a contaminant. It also contains anthraquinones such as parietin, fallacinal, parietinic acid, and citreorosein. A chemical analysis on specimens of the lichen from Japan revealed several terpenes, including pavoninin-2, terpecurcumin Q, ergosterol acetate, taxuspine C, and lantadene A methyl ester. The thallus has a bluish tinge when viewed under ultraviolet light. The expected results of standard lichen spot tests on this species are K− or + (producing a faint yellow colour), C−, KC−, and Pd−.

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Rujukan: [1]

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Habitat dan peran ekologis

Lepraria incana most commonly occurs on bark on the base of trees. It prefers old bark that is generally more than 20 years old. The lichen grows well on coniferous bark, although it prefers the bark of oak (genus Quercus). It has been judged to be well-adapted to rugose (wrinkled) bark and cork accumulation, as seen in the old stem parts of Pseudotsuga and Quercus. One study found that the probability of the lichen occurring increased with increasing bark crevice depth and decreasing tree bark pH (i.e., tending towards acidic), although another study noted its occurrence on the smooth bark of Abies. In Finland, the most common bark substrates for the lichen are from trees in the genera Picea, Tilia, and Pinus. Less frequently, it is encountered on rotten wood, soil, and rocks. In Belarus, it is the most common of nine species of Lepraria found there, accounting for nearly half of hundreds of herbarium specimens examined. There, it is most common on Picea abies and Pinus sylvestris. Similarly, it is almost always present, and sometimes dominant, in epiphytic lichen communities on common oak (Quercus rubra) in Lithuanian oak woods. In Latvia, it is most common on Quercus robur and Tilia cordata in dry deciduous forests, while in Estonia it is common in old spruce-dominated forests on account of the shade, relatively high humidity, and low pH of spruce bark.

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Rujukan: [1]

Habitat atau konteks temuan

hutan

Substrat

kulit kayu

Peran atau konteks

Pembentuk liken

Reproduksi

The thallus of Lepraria incana is leprose (powdery), and greenish grey in colour, often with blue tinge. It has a diffuse margin with neither distinct lobes, nor a distinct cortex, forming continuous patches with diameters up to about 8 cm, or forming smaller colonies of poorly developed patches or areoles. The thallus consists of abundant powdery soredia (little balls of algae wrapped in fungus hyphae) up to 50 μm in diameter. A medulla is sometimes present, but if so, it is usually poorly developed. Consoredia (diaspores made of aggregated soredia) are sometimes present, and they measure up to 110 μm. Overall, the appearance of the lichen can be quite variable, as sometimes it forms more or less loose cotton-like cushions, while other times it consists only of soredia that can be sparse or dense.

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 Lepraria incana dari Wikimedia Commons. Lepraria incana Identifikasi mengikuti record berkas sumber.

Jenis

Fotografi

Kredit

Jerzy Opioła

Lisensi

CC BY-SA 3.0

Sumber media

Buka entri sumber

Gambar menunjukkan objek menurut identifikasi sumber, bukan verifikasi independen spesimen oleh Fungi. Tidak ada skala baru yang ditambahkan.

Sumber profil

1. [1] Lepraria incana — Wikipedia (en)Bagian sumber: Frozen revision 1348863747
   Tanggal penghimpunan sumber: 2026-10-12
   Teks sumber: CC BY-SA4.0 · Wikipedia contributors
2. [2] Catalogue of Life Base2026-09-11 — Lepraria incanaBagian sumber: ColDP NameUsage.tsv ID 3TGGY; accepted species; source 2073
   Tanggal penghimpunan sumber: 2026-10-12
3. [3] Dokumentasi visual — Lepraria incanaBagian sumber: Individual media record; identification follows the source, not independent determination
   Tanggal penghimpunan sumber: 2026-10-12
   Media sumber: CC BY-SA 3.0 · Jerzy Opioła