Collection 1000587 (herbarium acc. no. NY 775296) is Hebeloma viscidissimum. It is the holotype of synonym Gymnopilus viscidissimus Murrill (1912).


  • arrow_drop_downarrow_drop_upCollecting details

    Collection 1000587 was collected by W.A. Murrill (WAM833) on 9th November 1911 in Mill City, Oregon, UNITED STATES (approx. 44.759°N, 122.4797°W, altitude approximately 300 m above sea level - Google maps). No ectomycorrhizal plants were recorded.

    The surrounding habitat was described as shrubland with a substrate of mossy soil and litter, 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. 3.4: Shrubland –Temperate.

    According to the GPS data the collection was in the Central-Southern Cascades 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 Csb (Temperate, dry summer, warm summer).

  • arrow_drop_downarrow_drop_upMacroscopic description

    Cortina present: analysis not yet complete.

    Pileus: up to 20 mm diameter; shape umbonate strongly; margin characters not recorded; viscosity tacky when moist; spotting not recorded; hygrophanous not recorded; colour variation two-colour; with colour at centre yellowish brown; and colour at margin not recorded; with remains of universal veil not recorded.

    Lamellae: attachment adnate, emarginate; maximum depth not recorded; number of complete lamellae 56; tears not recorded; white fimbriate edge not recorded.

    Stipe: 60 x 3 {median} x 4 {basal} mm; stipe Q 17.1; base clavate, cylindrical; floccosity fibrillose, pruinose at apex; rooting no; mycelial chords not recorded.

    Context: texture firm; stipe interior not recorded; stipe flesh discolouring from base no; slenderness measure 51.4; smell not recorded; taste not recorded.

    Spore deposit colour: analysis not yet complete.

    Exsiccata: analysis not yet complete.

  • arrow_drop_downarrow_drop_upMicroscopic description

    Spores: shape amygdaloid; colour through microscope yellow; guttulate no; papillate no; Spore Code: O2; P1; D3.

    Basidia: 19.7–26.1 x 4.9–6.8 μm; ave. Q = 4.2; basidia spore nature not recorded.

    Cheilocystidia: main shape cylindrical; special features many collapsed in exsiccata; Cheilocystidia Ratios: A/M = 1.08; A/B = 1.22; B/M = 0.90.

    Pleurocystidia: no.

    Ixocutis: epicutis thickness (measured from exsiccata) 160 μm; ixocutis maximum hyphae width 5 μm; ixocutis hyphae encrustation no; shape of trama elements beneath subcutis cylindrical up to 16 μm wide.

    Caulocystidia: caulocystidia maximum length 65 μm.

    Spore(min) 5%-95% (max)meanmedianS.D.
    Length (µm)(6.5) 7.0–8.8 (9.6)
    Width (µm)(4.1) 4.3–5.3 (5.5)
    Q(1.40) 1.46–1.78 (1.95)1.611.600.11

    Cheilocystidium (µm)(min) 5%-95% (max)meanmedianS.D.
    Length(14) 19–26 (30)23233.13
    Apex Width(3.3) 3.4–5.5 (5.8)
    Median Width(3.2) 3.3–
    Basal Width3.1–4.5 (5.9)
  • arrow_drop_downarrow_drop_upTemperature calculation
    Max tempMin tempPrecipitation
    Annualised average (1911)--- °C--- °C--- mm
    Collection month (11/1911)--- °C--- °C--- mm
    Max month (1911)--- °C--- °C--- 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 146.0 80.67 1st/12
Average length 7.8 8.47 12th/12
Average width 4.8 5.73 12th/12
Standard deviation of length 0.61 0.74 9th–10th/12
Standard deviation of width 0.28 0.36 10th–11th/12
Median length 7.8 8.59 12th/12
Median width 4.9 5.80 12th/12
Minimum length 6.5 6.83 8th–9th/12
Minimum width 4.1 4.78 12th/12
Low length 7.0 7.28 9th/12
Low width 4.3 5.15 12th/12
High length 8.8 9.54 12th/12
High width 5.3 6.24 12th/12
Max length 9.6 9.86 12th/12
Max width 5.5 6.43 12th/12
Spore featureValueCommonalities
Ornamentation O2 100% of collections
Perispore loosening P1 83% of collections
Dextrinoidity D3 100% of collections