Observation 86455: Stereum subtomentosum Pouzar
When: 2012-01-05
(46.34472° 13.56255° )
Herbarium specimen reported

Notes: Code: Bot_587/2012_DSC2122

Habitat: South inclined mountain slope, mostly broadleaf forest, calcareous ground, quite humid but warm place, mostly in shade, partly protected from direct rain by tree canopies, average precipitations ~ 3.000 mm/year, average temperature 8-10 deg C,
elevation 505 m (1.650 feet), alpine phytogeographical region.

Substratum: dead trunk of a cut off broadleaf tree, lying on ground, quite rotten but still mostly in bark. On the same log also Fomitopsis pinicola.

Place: Bovec basin, at the foot of Mt. Čukla, below Ravni laz place, East Julian Alps, Posočje, Slovenia EC

Comments: According to Ref.:(2) S. subtomentostum has no acanthohyphydia in the hymenium while similar S. ostrea has them (Ref.:(2), p335 and key on p.356). I was unable to find them in spite of the fact that they should be quite large (>100 x 5-10 micr. Ref.:(1)). There was no bleeding observed probably because of fairly dry state of the fruitbodies and weather. Average day temperatures about 0 deg C with -5 degC during the night.

Pileus dimensions up to 9 × 5 cm (3.5 × 2 inch), 1 mm or less thick. Smell indistinctive. Cup upper surface rusty-red-brown (oac700), hymenium dull brown-red (oac700), trama of wood color, with thin (~ 0,1 mm) brown upper layer and about 0.4 mm thick hymenial layer.

Spore dimensions: 6.6 (SD = 0.6) x 2.6 (SD = 0.2) micr., Q = 2.58 (SD = 0.2), n = 30. Motic B2-211A, magnification 1.000 x, oil, in water. Congo red.

Ref.:
(1) G.J.Krieglsteiner (Hrsg.), Die Grosspilze Bade-Württembergs, Band 1, Ulmer (2000), p339.
(2) http://www.mycobank.org/MycoTaxo.aspx?Link=T&Rec=339694 .
(3) Personal communication with Mr. Anton Poler.
(4) http://www.mycoquebec.org/... subtomentosum / Stérée tomenteux&tag=Stereum subtomentosum&gro=7 .
(5) http://users.skynet.be/deneyer.mycology/ .
(6) http://www.svims.ca/council/Stereu.htm#nSpe .

Nikon D700 / Nikkor Micro 105mm/f2.8 and Canon G11, 6.1-30mm/f2.8-4.5

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Created: 2012-01-17 06:26:38 CST (-0600)
Last modified: 2012-01-17 06:30:31 CST (-0600)
Viewed: 141 times, last viewed: 2016-10-21 12:31:30 CDT (-0500)
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