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Taxonomy

Collection 12914 (herbarium acc. no. LY BR66-14) is Hebeloma nigellum.

Description

  • arrow_drop_downarrow_drop_upCollecting details

    Collection 12914 was collected by G. Bruchet on 14th August 1966 in Sesvenna,Marangun,Grisons, SWITZERLAND (approx. 46.7°N, 10.4°E, altitude approximately 2350 m above sea level - Google maps). The ectomycorrhizal family Salicaceae (genus Salix) was present.

    The surrounding habitat was described as alpine meadow 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. 5.11: Wetlands (inland) – Alpine wetlands (inc. temporary waters from snowmelt).

    According to the GPS data the collection was in the Alps conifer and mixed forests 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: Temperate Conifer Forests) and Koppen climate code ET (Polar, tundra).

  • arrow_drop_downarrow_drop_upMacroscopic description

    Cortina present: yes.

    Pileus: up to 20 mm diameter; shape papillate; margin characters involute; viscosity tacky when moist; spotting not recorded; hygrophanous no; colour variation two-colour; with colour at centre not recorded; and colour at margin yellowish brown; with remains of universal veil no.

    Lamellae: attachment emarginate; maximum depth up to 2 mm; number of complete lamellae 24; tears absent; white fimbriate edge present.

    Stipe: 20–30 x 2–4 {median} x 2–4 {basal} mm; stipe Q 7.5–10.0; base cylindrical; floccosity fibrillose; rooting not recorded; mycelial chords not recorded.

    Context: texture firm; stipe interior not recorded; stipe flesh discolouring from base yes; slenderness measure 10.6; smell raphanoid; taste bitter weakly.

    Spore deposit colour: analysis not yet complete.

    Exsiccata: analysis not yet complete.

  • arrow_drop_downarrow_drop_upMicroscopic description

    Spores: shape amygdaloid, ellipsoid, ovoid; colour through microscope not recorded; guttulate not recorded; papillate no; Spore Code: O1; P0; D3.

    Basidia: 26.0–29.6 x 8.5–8.7 μm; ave. Q = 3.2; basidia spore nature not recorded.

    Cheilocystidia: main shape cylindrical, lageniform, ventricose; special features many collapsed in exsiccata; Cheilocystidia Ratios: A/M = 1.31; A/B = 0.71; B/M = 1.92.

    Pleurocystidia: no.

    Ixocutis: analysis not yet complete.

    Caulocystidia: analysis not yet complete.

    Spore(min) 5%-95% (max)meanmedianS.D.
    Length (µm)11.811.811.80.000
    Width (µm)7.27.27.20.000
    Q1.641.641.640.0

    Cheilocystidium (µm)(min) 5%-95% (max)meanmedianS.D.
    Length(40) 42–68 (70)555412.14
    Apex Width(4.5) 4.7–6.8 (7.0)5.75.70.910
    Median Width(3.4) 3.5–4.8 (4.9)4.34.40.65
    Basal Width(6.9) 7.0–9.6 (10.0)8.07.61.36
  • arrow_drop_downarrow_drop_upTemperature calculation
    Max tempMin tempPrecipitation
    Annualised average (1966)3.64 °C-2.66 °C70.11 mm
    Collection month (8/1966)10.29 °C3.69 °C130.32 mm
    Max month (1966)11.56 °C4.38 °C136.86 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 1.0 35.00 26th/26
Average length 11.8 12.15 19th–21st/28
Average width 7.2 7.17 11th–14th/28
Standard deviation of length 0.0 0.75 26th/26
Standard deviation of width 0.0 0.36 26th/26
Median length 11.8 12.15 17th–20th/26
Median width 7.2 7.18 13th–15th/26
Minimum length 11.8 10.76 4th/27
Minimum width 7.2 6.44 1st/28
Low length 11.8 11.14 7th–8th/27
Low width 7.2 6.64 1st/28
High length 11.8 13.30 26th/27
High width 7.2 7.66 28th/28
Max length 11.8 13.74 26th/27
Max width 7.2 7.84 28th/28
Spore featureValueCommonalities
Ornamentation O1 63% of collections
Perispore loosening P0 93% of collections
Dextrinoidity D3 83% of collections