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Taxonomy

Collection 11986 is Hebeloma alpinum.

Description

  • arrow_drop_downarrow_drop_upCollecting details

    Collection 11986 was collected by M.L. Beker on 13th August 2007 in Endalen, SVALBARD (78.1937°N, 15.7891°E, altitude approximately 30 m above sea level - Google maps). The ectomycorrhizal family Salicaceae (genus Salix) was present.

    The surrounding habitat was described as arctic tundra pastureland with a substrate of soil, corresponding to the IUCN habitat We map from the collector's description of the habitat to the International Union for Conservation of Nature (IUCN)'s definition using a standardised set of rules. Please see this page for a full list of IUCN habitats. 4.1: Grassland – Tundra.

    According to the GPS data the collection was in the Russian Arctic desert WWF ecoregion The World Wildlife Fund (WWF) have divided the world into 867 terrestrial ecoregions. The ecoregion here is estimated by mapping from the GPS coordinates of the collection using data made available by Dinerstein et al (2017). Use this webtool to explore the ecoregions visually or see a full list of current ecoregions on Wikipedia. (biome: Tundra) and Koppen climate code ET (Polar, tundra).

  • arrow_drop_downarrow_drop_upMacroscopic description

    Cortina present: no.

    Pileus: 17–20 mm diameter; shape umbonate; margin characters smooth; viscosity tacky when moist; spotting no; hygrophanous no; colour variation two-colour; with colour at centre dark pinkish buff; and colour at margin pale pinkish buff; with remains of universal veil no.

    Lamellae: attachment emarginate; maximum depth up to 4 mm; number of complete lamellae 46; tears absent; white fimbriate edge present.

    Stipe: 26–27 x 4–5 {median} x 4–5 {basal} mm; stipe Q 5.4–6.5; base cylindrical; floccosity floccose, pruinose; rooting no; mycelial chords no.

    Context: texture firm; stipe interior hollow; stipe flesh discolouring from base no; slenderness measure 8.6; smell raphanoid; taste not recorded.

    Spore deposit colour: analysis not yet complete.

    Exsiccata: normal.

  • arrow_drop_downarrow_drop_upMicroscopic description

    Spores: shape amygdaloid, limoniform; colour through microscope yellow brown; guttulate yes; papillate very strongly; Spore Code: O1; O2; P0; D0; D1.

    Basidia: 36.9–39.1 x 8.9–9.6 μm; ave. Q = 4.1; basidia spore nature not recorded.

    Cheilocystidia: main shape capitate-stipitate, clavate-stipitate, spathulate-stipitate; special features conglutinate, none; Cheilocystidia Ratios: A/M = 1.99; A/B = 2.05; B/M = 1.01.

    Pleurocystidia: only close to lamella edge.

    Ixocutis: epicutis thickness (measured from exsiccata) 160 μm; ixocutis maximum hyphae width 6 μm; ixocutis hyphae encrustation yes; shape of trama elements beneath subcutis ellipsoid, thickly sausage-shaped, spherical up to 18 μm wide.

    Caulocystidia: caulocystidia maximum length 120 μm.

    Spore(min) 5%-95% (max)meanmedianS.D.
    Length (µm)(10.9) 11.8–13.7 (14.6)12.712.70.680
    Width (µm)(6.8) 7.0–8.1 (8.3)7.57.50.340
    Q(1.37) 1.57–1.84 (1.91)1.691.700.09

    Cheilocystidium (µm)(min) 5%-95% (max)meanmedianS.D.
    Length(42) 46–63 (64)53525.36
    Apex Width(4.1) 6.4–9.7 (10.9)8.18.11.080
    Median Width(3.0) 3.4–5.1 (5.5)4.34.30.59
    Basal Width3.2–5.1 (6.0)4.24.10.69
  • arrow_drop_downarrow_drop_upTemperature calculation
    Max tempMin tempPrecipitation
    Annualised average (2007)-2.42 °C-6.58 °C30.65 mm
    Collection month (8/2007)4.96 °C1.61 °C33.55 mm
    Max month (2007)5.08 °C1.61 °C82.09 mm

Compare this collection to its species

This section compares data for this collection against its true species and also against the most likely species as determined by our identifier. More often than not these will be the same species, but where this is not the case, the data may be used to help explain why the identifier got it wrong.

Image gallery

Detailed statistics

Spore measurementsMy valueSpecies mean valuePosition
Count 72.0 51.92 13th–14th/86
Average length 12.7 12.22 16th–19th/87
Average width 7.5 7.03 9th–14th/87
Standard deviation of length 0.68 0.81 61st–62nd/82
Standard deviation of width 0.34 0.41 60th–61st/82
Median length 12.7 12.23 14th–18th/82
Median width 7.5 7.04 11th–14th/82
Minimum length 10.9 10.47 17th–22nd/84
Minimum width 6.8 6.19 5th–6th/84
Low length 11.8 11.01 9th–10th/84
Low width 7.0 6.44 4th–7th/84
High length 13.7 13.50 29th–31st/84
High width 8.1 7.69 12th–16th/84
Max length 14.6 14.03 21st–23rd/84
Max width 8.3 8.03 24th–29th/84
Spore featureValueCommonalities
Ornamentation O1; O2 24% of collections; 88% of collections
Perispore loosening P0 68% of collections
Dextrinoidity D0; D1 12% of collections; 72% of collections