Amanita bweyeyensis

Ciri dan struktur

Amanita bweyeyensis differs from the closest Amanita species by: pileus first pale brownish-grey then entirely whitish or with a faintly yellowish or pale beige shade, basal bulb of the stipe globose, neither pointed nor rooting, basidiospores subglobose to widely ellipsoid (Q = 1.10–1.17–1.28), absence of α- and β-amanitin, phalloidin and phallacidin in its basidiomata, connection with the genus Eucalyptus and distribution in Burundi, Rwanda and Tanzania. Primordium subglobose, smooth, whitish or with a weak olive tint. Pileus 40–73–120 mm diam., first hemispherical then expanding to regularly convex or applanate, without umbo; margin even, not striate nor appendiculate, in some mature specimens the pileipellis does not reach the edge of the pileus, leaving free the extreme tip of the lamellae; first pale brownish-grey (close to 6B2 or 6C2–3), then often entirely whitish or with a faintly yellowish or pale beige shade (between 4A2 and 5B2); somewhat viscid, smooth, devoid of veil remnants. Lamellae free, white, becoming slightly yellowish when old and ochraceous, pinkish-beige to pale pinkish-brown on the exsiccates with a narrow white and fluffy edge; mixed with an equal number of lamellulae which are very variable in length and are usually truncated; sub-distant, 8–9 lamellae and lamellulae per cm at 1 cm from the edge of the pileus, about 120–160 lamellae and lamellulae in total (counts on 5 basidiomata), 3–14 mm broad, serrate when seen with a magnifying glass. Stipe 65–95–152 × 7–25 mm, ratio length of the stipe/diam. of pileus = 1.04–1.25–1.38; sub-cylindrical, slightly wider just under lamellae, gradually and slightly widened from top to bottom, white, with finely fibrillose surface, hollow (at least on exsiccates).

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Rujukan: [1]

Pengukuran mengikuti objek, spesimen atau kultur, dan metode yang disebutkan sumber. Baca uraian asli untuk konteks lengkap.

Habitat dan peran ekologis

At present, the species is only known from Burundi, Rwanda and Tanzania but, according to its ecology, it could probably be observed in all Eucalyptus plantations in tropical Africa and possibly in South Africa as well. Consequently, if the species is collected for consumption, care should be taken to avoid confusion with A. marmorata, a species growing in the same biotopes and suspected to be highly toxic. On the ground, under Eucalyptus. The label of Saarimäki 591 indicates “in Acacia and Eucalyptus forest” whereas the legend of the associated picture (Härkönen et al. 2003: 62) indicates “growing in an Acacia mearnsii plantation”. However, the litter visible on that picture does not correspond to the latter species but looks like Eucalyptus leaves.

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Rujukan: [1]

Habitat atau konteks temuan

hutan

Substrat

tanah

Peran atau konteks

Belum dikategorikan pada rilis ini.

Reproduksi

Amanita bweyeyensis differs from the closest Amanita species by: pileus first pale brownish-grey then entirely whitish or with a faintly yellowish or pale beige shade, basal bulb of the stipe globose, neither pointed nor rooting, basidiospores subglobose to widely ellipsoid (Q = 1.10–1.17–1.28), absence of α- and β-amanitin, phalloidin and phallacidin in its basidiomata, connection with the genus Eucalyptus and distribution in Burundi, Rwanda and Tanzania. Primordium subglobose, smooth, whitish or with a weak olive tint. Pileus 40–73–120 mm diam., first hemispherical then expanding to regularly convex or applanate, without umbo; margin even, not striate nor appendiculate, in some mature specimens the pileipellis does not reach the edge of the pileus, leaving free the extreme tip of the lamellae; first pale brownish-grey (close to 6B2 or 6C2–3), then often entirely whitish or with a faintly yellowish or pale beige shade (between 4A2 and 5B2); somewhat viscid, smooth, devoid of veil remnants.

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.
• Preserve original treatment localities, hosts and substrate scope. Materials examined describe documented specimens, not the full global range.
• 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

Basidiomata of Amanita bweyeyensis. a Degreef 653 b Degreef 1257.

Jenis

Pelat ilmiah

Kredit

André Fraiture, Mario Amalfi, Olivier Raspé, Ertugrul Kaya, Ilgaz Akata, Jérôme Degreef

Lisensi

CC BY 4.0

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] Two new species of Amanita sect. Phalloideae from Africa, one of which is devoid of amatoxins and phallotoxins — Amanita bweyeyensisBagian sumber: PMC6565643_section_17
   Tanggal penghimpunan sumber: 2026-10-12
   Teks sumber: CC BY 4.0 · Fraiture A, Amalfi M, Raspé O, Kaya E, Akata I, Degreef J.
2. [2] Catalogue of Life Base2026-09-11 — Amanita bweyeyensisBagian sumber: ColDP NameUsage.tsv ID 65ZC4; accepted species; source 2073
   Tanggal penghimpunan sumber: 2026-10-12
3. [3] Dokumentasi visual — Amanita bweyeyensisBagian sumber: Identitas mengikuti sumber dokumentasi; bukan penentuan spesimen independen.
   Tanggal penghimpunan sumber: 2026-10-17
   Media sumber: CC BY 4.0 · André Fraiture, Mario Amalfi, Olivier Raspé, Ertugrul Kaya, Ilgaz Akata, Jérôme Degreef
4. [4] Dokumentasi visual — Amanita bweyeyensisBagian sumber: Identitas mengikuti sumber dokumentasi; bukan penentuan spesimen independen.
   Tanggal penghimpunan sumber: 2026-10-17
   Teks sumber: CC BY 4.0 · André Fraiture, Mario Amalfi, Olivier Raspé, Ertugrul Kaya, Ilgaz Akata, Jérôme Degreef