Observation 222318: Helvella lacunosa Afzel.
When: 2015-11-01
(46.4088° 13.7086° 885m)

Notes: Code: Bot_925/2015_DSC9731

Habitat: alpine valley; extensively grazed pasture with scattered trees; Larix decidua, Betula pendula, Picea abies, Fagus sylvatica dominant trees; among low grasses and mosses under two Larix decidua trees, however also in the reach of the roots of Betula pendula and Picea abies; almost flat terrain; colluvial, calcareous ground; partly sunny; average precipitations ~3.000 mm/year, average temperature 5-7 deg C, elevation 885 m (2.900 feet), alpine phytogeographical region.

Substratum: sandy soil.

Place: Zadnja Trenta valley, about 50 m upstream of the mountain cottage ‘Koča pri izviru Soče’, next to access dirt road to Zapodn place, East Julian Alps, Posočje, Slovenia EC.

Comments: The photographed fungi were deep black with a cobalt-blue tint. Only two fruitbodies were found; hymenophor dimensions of the larger 3.5 × 3 × 4 cm, fruitbody 9.5 cm tall (extended), stipe 6 cm long, 2.5 cm wide at the base, in cross-section chambered; the smaller hymenophor measured 2.2 × 2.5 × 3.5 cm, fruitbody was 5 cm tall, stipe 1.3 cm wide, also chambered; flesh fragile; SP faint, apparently whitish, accurate color could not be determined.

Nikon D700/Nikkor Micro 105mm/f2.8

Proposed Names

85% (1)
Eye3 Eyes3
Recognized by sight: Our only known black and large Helvella.
Used references: (1) R. Phillips, Mushrooms, Macmillan (2006), p 360.
(2) M. Bon, Parey’s Buch der Pilze, Kosmos (2005), p 328.
(3) R.M. Daehncke, 1200 Pilze in Farbfotos, AT Verlag (2009), p 1108.
(4) D. Arora, Mushrooms Demystified, Ten Speed Press, Berkeley (1986), p 815.
(5) W. Rothmaler, Exkursionsflora von Deutschland, Vol.1, Niedere Pflanzen, Elsevier, 3.Auflage, (1994), p 272.
(6) S. Buczacki, Collins Fungi Guide, Collins (2012), p 608.
(x) J. Breitenbach, F. Kraenzlin, Eds., Fungi of Switzerland, Vol.1. Verlag Mykologia (1984), p 54.
Based on microscopic features: Spores smooth with a large oil drop. Dimensions: 18.5 [20.2 ; 21.6] 23.3 × 13 [13.6 ; 14.2] 14.8 microns; Q = 1.3 [1.4 ; 1.6] 1.7; N = 11; C = 95%; Me = 20.9 × 13.9 microns; Qe = 1.5. Asci dimensions: 220 [260.5 ; 310.4] 350 × 14.8 [17.7 ; 21.3] 24.3 microns; Q = 10.3 [13.1 ; 16.5] 19.2; N = 7; C = 95%; Me = 285 × 19.5 microns; Qe = 14.8. Olympus CH20, NEA 100x/1.25, magnification 1.000 x, oil (spores); NEA 40x/0.65, magnification 400x (hymenium, paraphyses, excipulum), NEA 10x/0.25, magnification 100x (asci); in water. AmScope MA500 digital camera.
Based on chemical features: Smell unpleasant, on soil or dirty socks; taste indistinctive, mildly mushroomy.

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Eye3 = Observer’s choice
Eyes3 = Current consensus

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Created: 2015-11-09 10:47:28 PST (-0800)
Last modified: 2015-11-09 10:47:42 PST (-0800)
Viewed: 11 times, last viewed: 2016-01-09 06:36:30 PST (-0800)
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