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Taxonomy

Collection 19030 (herbarium acc. no. WTU-F-022027) is Hebeloma melleum.

Description

  • arrow_drop_downarrow_drop_upCollecting details

    Collection 19030 was collected by G.A. Laursen (GAL14520) on 9th August 2000 in Kobuk Valley National Park., Alaska, UNITED STATES (approx. 67.1221°N, 159.0491°W, altitude approximately 40 m above sea level - Google maps). The ectomycorrhizal families Betulaceae (genus Betula), Pinaceae (genus Picea) and Salicaceae (genera Populus and Salix) were present.

    The surrounding habitat was described as boreal woodland, 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. 1.1: Forest – Boreal.

    According to the GPS data the collection was in the Interior Alaska-Yukon lowland taiga 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: Boreal Forests/Taiga) and Koppen climate code Dfc (Cold, no dry season, cold summer).

  • clearclearMacroscopic description
     - analysis not yet complete
  • arrow_drop_downarrow_drop_upMicroscopic description

    Spores: shape amygdaloid; colour through microscope brown, yellow brown; guttulate yes; papillate no; Spore Code: O1; O2; O3; P1; D3.

    Basidia: 29.9–34.4 x 6.3–7.4 μm; ave. Q = 4.6; basidia spore nature not recorded.

    Cheilocystidia: main shape cylindrical, ventricose; special features septa; Cheilocystidia Ratios: A/M = 1.02; A/B = 0.89; B/M = 1.18.

    Pleurocystidia: no.

    Ixocutis: epicutis thickness (measured from exsiccata) 100 μm; ixocutis maximum hyphae width 5 μm; ixocutis hyphae encrustation no; shape of trama elements beneath subcutis ellipsoid up to 20 μm wide.

    Caulocystidia: caulocystidia maximum length 75 μm.

    Spore(min) 5%-95% (max)meanmedianS.D.
    Length (µm)(8.2) 8.6–10.3 (10.5)9.59.70.580
    Width (µm)(4.7) 5.2–6.4 (6.5)5.96.00.400
    Q(1.44) 1.50–1.78 (1.85)1.621.620.09

    Cheilocystidium (µm)(min) 5%-95% (max)meanmedianS.D.
    Length(16) 19–39 (44)28306.73
    Apex Width(3.1) 3.4–4.8 (5.3)4.14.10.490
    Median Width(3.2) 3.5–5.0 (5.3)4.14.00.53
    Basal Width(3.4) 3.7–6.9 (7.1)4.84.70.97
  • arrow_drop_downarrow_drop_upTemperature calculation
    Max tempMin tempPrecipitation
    Annualised average (2000)0.25 °C-6.96 °C23.11 mm
    Collection month (8/2000)11.76 °C6.52 °C78.46 mm
    Max month (2000)16.54 °C8.30 °C78.46 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 74.0 75.67 2nd/3
Average length 9.5 9.33 1st/3
Average width 5.9 5.60 1st/3
Standard deviation of length 0.58 0.63 2nd/3
Standard deviation of width 0.4 0.38 2nd/3
Median length 9.7 9.43 1st/3
Median width 6.0 5.70 1st/3
Minimum length 8.2 7.83 1st/3
Minimum width 4.7 4.40 1st/3
Low length 8.6 8.20 1st/3
Low width 5.2 4.97 1st/3
High length 10.3 10.20 2nd/3
High width 6.4 6.13 1st/3
Max length 10.5 10.40 1st–2nd/3
Max width 6.5 6.30 1st/3
Spore featureValueCommonalities
Ornamentation O1; O2; O3 33% of collections; 33% of collections; 100% of collections
Perispore loosening P1 100% of collections
Dextrinoidity D3 100% of collections