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Taxonomy

Collection 16892 is Hebeloma spetsbergense.

Description

  • arrow_drop_downarrow_drop_upCollecting details

    Collection 16892 was collected by L. Davies, H.J. Beker on 18th August 2017 in Fort Ross, Somerset Island, Nunavut, CANADA (72.0105°N, 94.2383°W, altitude approximately 10 m above sea level - Google maps). The ectomycorrhizal family Salicaceae (genus Salix) was present.

    The surrounding habitat was described as arctic tundra with a substrate of mossy 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 Canadian Middle Arctic Tundra 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: yes.

    Pileus: up to 26 mm diameter; shape umbonate; margin characters smooth; viscosity tacky when moist; spotting no; hygrophanous no; colour variation unicolor; with colour at centre yellowish brown; and colour at margin not recorded; with remains of universal veil no.

    Lamellae: attachment emarginate; maximum depth up to 5 mm; number of complete lamellae 34; tears absent; white fimbriate edge not recorded.

    Stipe: 28 x 3 {median} x 5 {basal} mm; stipe Q 9.3; base clavate; floccosity fibrillose, pruinose at apex; rooting no; mycelial chords no.

    Context: texture firm; stipe interior hollow; stipe flesh discolouring from base no; slenderness measure 10.1; smell none; taste not recorded.

    Spore deposit colour: analysis not yet complete.

    Exsiccata: analysis not yet complete.

  • arrow_drop_downarrow_drop_upMicroscopic description

    Spores: shape amygdaloid, limoniform; colour through microscope not recorded; guttulate not recorded; papillate weak; Spore Code: O1; O2; P0; D3.

    Basidia: 32.5–37.0 x 8.4–9.4 μm; ave. Q = 3.9; basidia spore nature not recorded.

    Cheilocystidia: main shape lageniform, pyriform, ventricose; special features clamped septa, septa; Cheilocystidia Ratios: A/M = 1.19; A/B = 0.63; B/M = 1.94.

    Pleurocystidia: yes.

    Ixocutis: epicutis thickness (measured from exsiccata) 50 μm; ixocutis maximum hyphae width 7 μm; ixocutis hyphae encrustation yes; shape of trama elements beneath subcutis isodiametric, thickly sausage-shaped up to 15 μm wide.

    Caulocystidia: caulocystidia maximum length 95 μm.

    Spore(min) 5%-95% (max)meanmedianS.D.
    Length (µm)(12.7) 13.2–16.9 (17.4)15.015.11.200
    Width (µm)(7.0) 7.4–9.1 (9.3)8.38.30.580
    Q(1.61) 1.64–2.04 (2.13)1.821.790.12

    Cheilocystidium (µm)(min) 5%-95% (max)meanmedianS.D.
    Length(32) 36–73 (79)494313.56
    Apex Width(4.3) 4.7–7.2 (8.4)6.16.10.790
    Median Width(3.5) 4.0–6.6 (6.7)5.15.00.95
    Basal Width(7.3) 7.4–12.5 (13.3)9.79.41.67
  • arrow_drop_downarrow_drop_upTemperature calculation
    Max tempMin tempPrecipitation
    Annualised average (2017)-8.86 °C-15.68 °C16.35 mm
    Collection month (8/2017)8.60 °C2.10 °C42.60 mm
    Max month (2017)9.50 °C2.90 °C42.60 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 52.0 62.82 34th–35th/61
Average length 15.0 13.12 2nd/61
Average width 8.3 7.99 11th–15th/61
Standard deviation of length 1.2 0.84 2nd/61
Standard deviation of width 0.58 0.42 6th/61
Median length 15.1 13.11 2nd/61
Median width 8.3 7.98 13th–16th/61
Minimum length 12.7 11.26 2nd–3rd/61
Minimum width 7.0 7.03 31st–37th/61
Low length 13.2 11.83 1st–3rd/61
Low width 7.4 7.37 22nd–26th/61
High length 16.9 14.43 2nd/61
High width 9.1 8.65 9th–11th/61
Max length 17.4 15.23 2nd/61
Max width 9.3 8.98 12th–19th/61
Spore featureValueCommonalities
Ornamentation O1; O2 59% of collections; 91% of collections
Perispore loosening P0 100% of collections
Dextrinoidity D3 91% of collections