Roccella albida

Ciri dan struktur

Roccella albida has a distinctively shaped thallus, which forms branches that are (cylindrical and smooth) or slightly (marked with small depressions). These branches generally range in length from 5 to 20 cm and have a colouration that varies from white to white-greyish. Soredia, which are reproductive structures for asexual reproduction, are infrequently found in this species and show a negative reaction to the C spot test. The medulla, the inner tissue of the thallus, is or nearly byssoid, meaning it has a fibrous or cottony texture. Its colouration is predominantly white, though it can sometimes appear pale yellowish-brown, especially in the lower parts of the lichen. Ascomata, the spore-producing structures, are a common feature in Roccella albida. They often appear sessile (directly attached without a stalk) and have strongly undulating margins, which give them a knotty appearance. The of Roccella albida measure between 22 and 26 μm in length and 5 to 6 μm in width, with an average size of approximately 23.8 by 5.5 μm. Chemical spot tests yield negative results for the medulla with both potassium hydroxide (K) and calcium hypochlorite (C), indicated as K− and C−, respectively. However, the cortex is C+ (red), and K−. The disc of the ascomata is C−. In terms of its chemical makeup, Roccella albida contains secondary metabolites (lichen products) such as erythrin, lecanoric acid, and protocetraric acid, as identified by high-performance thin-layer chromatography.

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Rujukan: [1]

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Habitat dan peran ekologis

Roccella albida is native exclusively to the Galápagos Islands, with its presence confirmed on the islands Santa Fe, Floreana, Pinzón, Rábida, San Cristóbal, Santa Cruz, and Española. This species thrives in coastal areas, predominantly on vertical rocks and cliffs.

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Rujukan: [1]

Habitat atau konteks temuan

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Substrat

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Peran atau konteks

Pembentuk liken

Reproduksi

Roccella albida has a distinctively shaped thallus, which forms branches that are (cylindrical and smooth) or slightly (marked with small depressions). These branches generally range in length from 5 to 20 cm and have a colouration that varies from white to white-greyish. Soredia, which are reproductive structures for asexual reproduction, are infrequently found in this species and show a negative reaction to the C spot test. The medulla, the inner tissue of the thallus, is or nearly byssoid, meaning it has a fibrous or cottony texture. Its colouration is predominantly white, though it can sometimes appear pale yellowish-brown, especially in the lower parts of the lichen. Ascomata, the spore-producing structures, are a common feature in Roccella albida.

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 Roccella albida dari Wikimedia Commons. For more information about this, see the observation page at Mushroom Observer. Identifikasi mengikuti record berkas sumber.

Jenis

Fotografi

Kredit

This image was created by user Jason Hollinger (jason) at Mushroom Observer , a source for mycological images. You can contact this user here .

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] Roccella albida — Wikipedia (en)Bagian sumber: Frozen revision 1197419865
   Tanggal penghimpunan sumber: 2026-10-12
   Teks sumber: CC BY-SA4.0 · Wikipedia contributors
2. [2] Catalogue of Life Base2026-09-11 — Roccella albidaBagian sumber: ColDP NameUsage.tsv ID 6WWTG; accepted species; source 2073
   Tanggal penghimpunan sumber: 2026-10-12
3. [3] Dokumentasi visual — Roccella albidaBagian sumber: Individual media record; identification follows the source, not independent determination
   Tanggal penghimpunan sumber: 2026-10-12
   Media sumber: CC BY-SA 3.0 · This image was created by user Jason Hollinger (jason) at Mushroom Observer , a source for mycological images. You can contact this user here .