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 Add this item to the list   Aleurodiscus penicillatus Burt
   
Literature:
 
Page number:288 
Remarks (public):Isolates 322, 329, 356, and 581 are simple-septate, and isolates 536 and 555 have clamp connections. According to Boidin, Terra and Lanquetin (1968), old polyspore cultures lose their clamp connections, and are thus neohaplonts.
In culture, this species is very similar to Aleurodiscus amorphus, which supports its inclusion in that genus and not Acanthophysium. Fruiting body characters that argue for its inclusion in Aleurodiscus include its large, spiny basidiospores, which are pinkish-orange in mass, and its sulfo-negative gloeocystidia. The fine aculei on basidioles (often persisting as a subapical fringe on mature basidia) should not be confused with the acanthophyses of Acanthophysium.
 
Description type:Culture description 
Description:Aleurodiscus penicillatus Burt
Species code: 2a.3c.[6].9.(26)(27).32.36.38.47.(50-53).55.58.63. (Presumed monokaryons contribute [6], simple septa)
Monokaryons: Growth on MEA: Very slow, plates not covered after 6 wk. Radius at 2 wk averaging 11.2 mm (3.5-23.6), at 6 wk averaging 37 mm (6.5-58). Margins even, submerged to appressed, dense, or fimbriate, or wispy, hyaline to white. Mat at 2 wk dense, low and thin to moderately deep, silky to greasy to farinose, with pellicular or cottony to woolly to floccose patches, at 6 wk silky to downy to cottony to woolly to floccose, azonate, hyaline or white, or cream, (4A2-4B2). Reverse at 2 wk unchanged to coloured, pale yellow (4A2), at 6 wk unchanged to coloured, yellow (4A2, 40B3). Not fruiting within 6 wk. Odour nil to 2+, "fragrant", or "other", or (nil or nondescript, or of lemon oil, cedarwood, menthol, apple, or yeasty, sometimes with eye and nose-stinging volatile).
Microscopic characters: Marginal hyphae tubular, straight, thin-walled, 1.6-3.5 µm broad (to 6.6 µm in 356), with sparse, simple septa. Branching acute to at right angles, not associated with septa. Cultures monomitic, generative hyphae in older mat predominantly tubular, smooth, inamyloid, 1.3-5.6 µm broad, simple-septate, walls up to 0.9 µm thick (356), sometimes with intercalary swellings 6.5-11.3 µm broad. Capilliform hyphae present or lacking, tangled, 1.3-2.5 µm broad. Sometimes with some hyphae in slender parallel fascicles. Crystals present among aerial hyphae and in agar, or lacking in mat and agar, polarized, chunky or plate-like, to 15 µm broad, or nonpolarized, tetrahedral, to 10 µm, single. Submerged hyphae similar to aerial, inamyloid, 1.5-5.8 µm broad, simple-septate, with walls to 0.5(-1.0) µm thick, with intercalary swellings to 5.5 µm broad. Conidia lacking.
Growth on PDA: Very slow, plates not covered after 6 wk. Diameter at 2 wk averaging 19.1 mm (5-33), at 6 wk averaging 52.2 mm (16.5-83.5). Margins even, submerged, or appressed, or raised, dense, opaque (white), or fimbriate, or wispy, hyaline. Mat at 2 wk dense, low and thin to average, silky to farinose to cottony to woolly to felty, sometimes lacunose, at 6 wk cottony to woolly to felty to downy, sometimes lacunose, zonate or azonate. Mat hyaline to white, or cream, or pale orange (4A2, 5B2, 6A2, 6C2). Reverse at 2 wk unchanged to coloured, pale yellow (4A2), at 6 wk unchanged to coloured, pale yellow to orange (4A2-6C3½). Not fruiting within 6 wk. Odour 2+ to 3+, "fragrant" to "other" (fragrant-fruity: lemon-cedar, cherry, mint, or apple, sometimes with yeasty tone or heady volatile).
Growth on ML: Slow, plates covered in 6 wk, to very slow, plates not covered after 6 wk. Diameter at 2 wk averaging 20.5 mm (13-30), at 6 wk averaging 60.8 mm (24-85). Margins even, submerged to appressed, dense, or fimbriate, or wispy, hyaline to (white). Aerial mycelium present. Mat dense, low and thin, cottony to woolly to pellicular to felty, at 6 wk silky to downy to cottony to woolly to felty, azonate. Mat hyaline to cream, (4Al½-6Al½). Reverse at 2 wk unchanged to coloured, pale yellow (4½A2½), at 6 wk, pale yellow or orange (4A2, 6B3). Not fruiting within 6 wk. Odour + to 3+, "fragrant" to "other" (fragrant-fruity: lemon-cedar, apple, lemon oil, English mints, often combined with or followed by yeasty tone and sometimes a sharp, stinging volatile).
Dikaryons: Growth on MEA: Similar to that described above for monokaryons. Odour nil to 2+, "fragrant" to "other" (nil to fragrant: "sweet", old apples, plus pungent: vomit, old cabbage, and sometimes with strong sinus irritant).
Microscopic characters: Marginal hyphae tubular, thin-walled, 1.8-2.8 µm broad, with simple clamp connections. Branching angle various, infrequently associated with clamp connections. Hyphae of older mat predominantly tubular, 1.7-4 µm broad, with simple clamp connections, with faint intercalary swellings to 5.7 dum broad. Crystals present among aerial hyphae and in agar, polarized, plate-like, 8-16 µm broad, or nonpolarized, tetrahedral, 8-20 pim broad, singly. Submerged hyphae tubular, thin-walled, 1.7-5.1 µm broad, with simple clamp connections. Conidia lacking.
Growth on PDA: Odour 2+ to 4+, "fragrant" to "other" (fragrant: old apples, piney almond, balsam gum, pungent: old skunk, nauseous, cabbage, plus volatile: yeasty-alcoholic, ether).
Growth on ML: Odour 2+ to 3+, "fragrant" to "other" to "antiseptic" (fragrant: old apples, lemon detergent, pungent-unpleasant: ammonia, carbolic, skunk, old cabbage, nauseous, wet wood ash, followed by yeasty or heady volatile).
Diazonium Blue-B staining: DBB on untreated mycelia, exterior 3+ yellow, 0.6+ red (0-0.8), 0+ purple. Interior 0+ reddish. DBB on KOHpretreated mycelia, exterior 0+ yellow, 2.3+ red (2-3), 2.3+ purple (2-3).
Growing on gymnosperms (including Abies, Picea, Pseudotsuga, Tsuga). Presumed heterothallic, polarity unknown (Boidin, Terra and Lanquetin 1968).
Isolates studied: T-322, T-329, T-356, T-536, T-555, T-581.
Growing on gymnosperms (including Abies, Picea, Pseudotsuga, Tsuga). Presumed heterothallic, polarity unknown (Boidin, Terra and Lanquetin 1968).
Isolates studied: T-322, T-329, T-356, T-536, T-555, T-581.

 
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