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Taxonomy

Collection 19033 (herbarium acc. no. WTU-F-021751) is Hebeloma eburneum.

Description

  • arrow_drop_downarrow_drop_upCollecting details

    Collection 19033 was collected by G.A. Laursen (GAL14699) on 28th July 2001 in Toolik Lk, LTeR Grid Mi 284.3,, Alaska, UNITED STATES (approx. 68.0009°N, 149.996°W, altitude approximately 1400 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 Brooks-British Range 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: no.

    Pileus: analysis not yet complete.

    Lamellae: attachment not recorded; maximum depth not recorded; number of complete lamellae 80; tears not recorded; white fimbriate edge weak.

    Stipe: analysis not yet complete.

    Context: analysis not yet complete.

    Spore deposit colour: analysis not yet complete.

    Exsiccata: analysis not yet complete.

  • arrow_drop_downarrow_drop_upMicroscopic description

    Spores: shape amygdaloid; colour through microscope not recorded; guttulate not recorded; papillate weak; Spore Code: O3; P1; D1; D2.

    Basidia: 27.2–33.3 x 6.9–8.8 μm; ave. Q = 3.6; basidia spore nature not recorded.

    Cheilocystidia: main shape clavate-stipitate; special features conglutinate; Cheilocystidia Ratios: A/M = 2.07; A/B = 2.13; B/M = 0.98.

    Pleurocystidia: no.

    Ixocutis: analysis not yet complete.

    Caulocystidia: analysis not yet complete.

    Spore(min) 5%-95% (max)meanmedianS.D.
    Length (µm)(10.2) 10.3–12.2 (12.6)11.411.40.580
    Width (µm)(6.0) 6.5–7.7 (8.7)7.07.00.410
    Q(1.34) 1.44–1.78 (1.90)1.621.620.11

    Cheilocystidium (µm)(min) 5%-95% (max)meanmedianS.D.
    Length(45) 46–64 (72)55546.89
    Apex Width(7.5) 7.6–10.5 (11.0)8.78.31.160
    Median Width(2.4) 3.2–5.8 (6.2)4.44.40.86
    Basal Width(3.4) 3.5–5.0 (5.5)4.14.10.55
  • arrow_drop_downarrow_drop_upTemperature calculation
    Max tempMin tempPrecipitation
    Annualised average (2001)-1.85 °C-12.70 °C17.75 mm
    Collection month (7/2001)13.74 °C2.55 °C76.37 mm
    Max month (2001)14.63 °C2.55 °C76.37 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 57.0 51.46 27th–31st/90
Average length 11.4 11.78 63rd–68th/92
Average width 7.0 6.54 2nd–13th/92
Standard deviation of length 0.58 0.74 75th–76th/90
Standard deviation of width 0.41 0.37 28th–35th/90
Median length 11.4 11.80 65th–69th/90
Median width 7.0 6.54 7th–12th/90
Minimum length 10.2 10.23 42nd–50th/92
Minimum width 6.0 5.78 17th–24th/92
Low length 10.3 10.67 70th–72nd/92
Low width 6.5 5.99 5th–10th/92
High length 12.2 12.89 73rd–76th/92
High width 7.7 7.12 5th–6th/92
Max length 12.6 13.47 71st/92
Max width 8.7 7.43 1st–2nd/92
Spore featureValueCommonalities
Ornamentation O3 88% of collections
Perispore loosening P1 93% of collections
Dextrinoidity D1; D2 81% of collections; 50% of collections