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Taxonomy

Collection 18138 is Hebeloma excedens.

Description

  • arrow_drop_downarrow_drop_upCollecting details

    Collection 18138 was collected by H.J. Beker, L. Davies on 8th September 2018 in Mosquito Creek, Off Highway 3, Northwest Territories, CANADA (62.6943°N, 116.1534°W, altitude approximately 180 m above sea level - Google maps). The ectomycorrhizal families Pinaceae (genus Picea) and Salicaceae (genus Populus) were present.

    The surrounding habitat was described as boreal, calcareous woodland with a substrate of burnt 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. 1.1: Forest – Boreal.

    According to the GPS data the collection was in the Northwest Territories 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).

  • arrow_drop_downarrow_drop_upMacroscopic description

    Cortina present: yes.

    Pileus: up to 30 mm diameter; shape papillate, umbonate; margin characters overhanging pileus; viscosity tacky when moist; spotting no; hygrophanous no; colour variation two-colour; with colour at centre yellowish brown; and colour at margin yellowish brown; with remains of universal veil yes.

    Lamellae: attachment emarginate; maximum depth not recorded; number of complete lamellae 42; tears absent; white fimbriate edge present.

    Stipe: 55 x 5 {median} x 5 {basal} mm; stipe Q 11.0; base cylindrical; floccosity fibrillose, pruinose at apex; rooting no; mycelial chords no.

    Context: texture firm; stipe interior hollow; stipe flesh discolouring from base weak; slenderness measure 20.2; 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 ellipsoid, ovoid; colour through microscope not recorded; guttulate not recorded; papillate no; Spore Code: O1; P0; D0.

    Basidia: 27.7–30.3 x 7.5–8.5 μm; ave. Q = 3.7; basidia spore nature not recorded.

    Cheilocystidia: main shape lageniform, ventricose; special features septa; Cheilocystidia Ratios: A/M = 1.06; A/B = 0.63; B/M = 1.71.

    Pleurocystidia: no.

    Ixocutis: analysis not yet complete.

    Caulocystidia: analysis not yet complete.

    Spore(min) 5%-95% (max)meanmedianS.D.
    Length (µm)(7.5) 8.0–10.6 (10.7)9.49.40.800
    Width (µm)(4.8) 5.0–6.3 (6.5)5.75.80.390
    Q(1.32) 1.45–1.85 (2.03)1.641.650.13

    Cheilocystidium (µm)(min) 5%-95% (max)meanmedianS.D.
    Length(27) 28–41 (48)34324.81
    Apex Width4.2–5.5 (5.6)4.84.80.490
    Median Width(3.2) 3.8–5.2 (5.4)4.64.70.51
    Basal Width(6.3) 6.4–9.2 (9.3)7.87.80.85
  • arrow_drop_downarrow_drop_upTemperature calculation
    Max tempMin tempPrecipitation
    Annualised average (2018)0.38 °C-10.01 °C30.58 mm
    Collection month (9/2018)7.50 °C-1.80 °C20.91 mm
    Max month (2018)22.77 °C11.34 °C85.09 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 57.0 68.23 30th–31st/52
Average length 9.4 9.33 22nd–24th/52
Average width 5.7 5.68 25th–29th/52
Standard deviation of length 0.8 0.71 12th–15th/52
Standard deviation of width 0.39 0.36 16th–18th/52
Median length 9.4 9.35 22nd–23rd/52
Median width 5.8 5.69 16th–25th/52
Minimum length 7.5 7.67 31st–34th/52
Minimum width 4.8 4.81 24th–29th/52
Low length 8.0 8.15 31st–32nd/52
Low width 5.0 5.16 31st–33rd/52
High length 10.6 10.41 16th–22nd/52
High width 6.3 6.25 23rd–29th/52
Max length 10.7 10.78 31st–35th/52
Max width 6.5 6.53 16th–33rd/52
Spore featureValueCommonalities
Ornamentation O1 100% of collections
Perispore loosening P0 100% of collections
Dextrinoidity D0 94% of collections