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 Add this item to the list   Serpula himantioides (Fr.: Fr.) P. Karsten
   
Literature:
 
Page number:389 
Remarks (public):This isolate, in addition to lacking clamp connections, differs from S. himantioides as described by Stalpers (1978) in possessing distinct hyphal strands (code 16) and maintaining a pallid colouration (code 36) on MEA. However, this is not considered significant because of the different medium used by Stalpers; colonies on PDA have the combination of yellow colouration at 6 wk (code 37), and lack of hyphal strands. Hwang (1955) noted that different monokaryons varied in their colour and production of hyphal strands. In addition, this isolate is distinguished by its negative reactions in tests for polyphenol oxidases, and its sensitivity to malachite green and cycloheximide. 
Description type:Culture description 
Description:Serpula himantioides (Fr.: Fr.) P. Karsten
References: Hwang (1955,as Merulius americanus), Harmsen (1960), Stalpers (1978)
Species code: 1.3c.(7).(26).(27).32.(37).39.47.(54).55.60. (from Stalpers 1978)
Isolate code: 1.6.(7).16.32.36.(38-39).(46-)47.54.
Growth on MEA: Slow, plates covered in 6 wk, to very slow, plates not covered after 6 wk. Radius at 2 wk averaging 22.5 mm (13.5-30), at 6 wk averaging 66 mm (> 41 mm). Margins bayed, raised, wispy, hyaline to (white). Aerial mycelium present. Mat at 2 wk moderate, average to deep, farinose to cottony to plumose, at 6 wk cottony to woolly, with hyphal strands, azonate, hyaline to white. Reverse at 2 wk faintly bleached (50%), at 6 wk unchanged to coloured, pale yellow (3A2-4A2). Not fruiting within 6 wk. Odour (+) to +, (nondescript).
Microscopic characters: Marginal hyphae tubular, straight, thinwalled, 1.4-6.5 µm broad, with sparse simple septa, sparsely branched. Branching angle various; branches not associated with septa. Cultures monomitic, generative hyphae in older mat remaining thin-walled,
tubular, undifferentiated, smooth, inamyloid, 1.7-4.8 pro broad, simpleseptate. Crystals present among aerial hyphae and in agar, yellowish, polarized, plate-like, up to 20 pro broad, and with nonpolarized, tetrahedral crystals up to 10 µm broad in agar only, both types occurring singly. Submerged hyphae similar to aerial, inamyloid, 1.1-4.8 pro broad, simple-septate, thin-walled. Conidia lacking.
Growth on PDA: Slow, plates covered in 6 wk, to very slow, plates not covered after 6 wk. Diameter at 2 wk averaging 39.3 mm (25-54), at 6 wk averaging 83 mm (> 54 mm). Margins bayed, raised, wispy to hispid, white. Aerial mycelium present. Mat at 2 wk of moderate density, moderately deep to deep, reaching the lid of the Petri dish, cottony to radially plumose, at 6 wk venose and matted woolly azonate. Mat hyaline to white, to yellow at 6 wk (3A2-4½D4). Reverse at 2 wk coloured, pale yellow (2*A3-2½A4), at 6 wk coloured, pale yellow to orange-red (3A4- 4A5, 7E4). Not fruiting within 6 wk. Odour + to 3+, "fragrant" to "earthy or musty" (fruity, grapefruit, celeriac, or rotted vegetables).
Growth on ML: Moderate, plates covered in 4 wk, to very slow, plates not covered after 6 wk. Diameter at 2 wk averaging 46.2 mm (21-59), at 6 wk averaging 129 mm (> 49.5 mm). Margins bayed, raised, wispy to plumose, hyaline. Aerial mycelium present. Mat at 2 wk of moderate density, moderately deep to deep, reaching the lid of the Petri dish, cottony to plumose, at 6 wk deeply and loosely woolly, with pale yellow (3A2) hyphal strands, azonate. Mat hyaline to white, to pale yellow at 6 wk (3A1* or 4A14). Reverse at 2 wk unchanged, at 6 wk unchanged to yellow (3A4). Not fruiting within 6 wk. Odour + to 2+, "earthy or musty" (pungent, rhubarb leaves, or green beans).
Growing on angiosperms (Ouercus) or, more commonly, on gymnosperms (Stalpers 1978). Heterothallic, tetrapolar (Hwang 1955; Harmsen et al. 1958), nuclear cycle unknown.
Isolates studied: T-478.
 
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