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Observation 83075: Hericium alpestre Pers. (Site ID) (Hericium flagellum)

Code: Bot_568/2011_DSC0740

Habitat: Steep W faced mountain slope, mixed wood, calcareous ground, humid and cold place with little sun, exposed to direct rain, average precipitations ~ 3.000 mm/year, average temperature 3-5 deg C, elevation 1.150 m (3.800 feet), alpine phytogeographical region.

Substratum: fairly rotten large trunk of conifer tree, laying on ground, debarked, almost certainly Abies alba.

Place: Lower Trenta valley, Planina Lepoč, near the trail to Prehodavci mountain hut, East Julian Alps, Posočje, Slovenia EC

Comments: Growing solitary; pileus diameter about 20 cm (8 inch); slightly aged specimen; SP white (oac900), contex white (oac900-909), spines beige—yellow (oac858).

Enlisted in the Slovene Red List of rare and endangered species, marked by “R” representing a rare species.

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

Species Lists


KOH reaction on spines.

Proposed Names

46% (2)
Recognized by sight
Used references: (1) G.J.Krieglsteiner (Hrsg.), Die Grosspilze Bade-Württembergs, Band 2., Ulmer (2000), p 99.
(2) .
(3) .
(4) .
Based on microscopic features: Spores mostly smooth; some show faint fine surface pattern (?) (see arrows on spore picture), thick walled, with one oil drop. Dimensions: 5.5 (SD = 0.3) x 4.9 (SD = 0.3) micr., Q = 1.12 (SD = 0.05), n = 30. Motic B2-211A, magnification 1.000 x, oil, in water.
Based on chemical features: Taste and smell mild, slightly aged specimen; KOH reaction on spines slow, golden yellow, on trama almost absent (slightly yellow?).
77% (2)
Recognized by sight

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= Observer’s choice
= Current consensus


Add Comment
By: amadej trnkoczy (amadej)
2012-01-17 02:06:28 PST (-0800)

Thank you mycowalt. You are right. Both Index Fungorum and MycoBank have H. flagellum as a synonym and H. alpestre Pers.1825 as a valid name. I followed Krieglsteiner (2000) Ref.:(1), who still has the opposite.

Abies alba almost for sure
By: amadej trnkoczy (amadej)
2011-11-26 06:16:25 PST (-0800)

I talked with Mr. Igor Mlekuž, forester in chief in this region about the possibility that this large but quite rotten log of this observation is Abies alba. He considers this as almost certain. Planina Lepoč region is an (although unofficial) reserve for Abies alba. I didn’t notice this when I photographed the fungus. Stands of Abies alba suffered a lot of damage during last decades in Slovenia. Big and still alive trees became almost a rare observation otherwise. Note also that the same log is infected by Multiclavula mucida.