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Taxonomy

Collection 8483 (herbarium acc. no. BR 5020184120412) is the epitype of Hebeloma sacchariolens.

Description

  • arrow_drop_downarrow_drop_upCollecting details

    Collection 8483 was collected by H.J. Beker on 18th November 2002 in La Baraka, Gorse Hill Road, Virginia Water, Surrey, ENGLAND (51.4094°N, 0.565°W, altitude approximately 70 m above sea level - Google maps). The ectomycorrhizal family Betulaceae (genus Betula) was present.

    The surrounding habitat was described as urban garden with a substrate of grassy 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. 14.5: Urban Areas.

    According to the GPS data the collection was in the English Lowlands beech 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 Broadleaf & Mixed Forests) and Koppen climate code Cfb (Temperate, no dry season, warm summer).

  • arrow_drop_downarrow_drop_upMacroscopic description

    Cortina present: no.

    Pileus: 21–50 mm diameter; shape convex, umbonate, umbonate broadly; margin characters smooth; viscosity tacky when moist; spotting no; hygrophanous no; colour variation two-colour; with colour at centre ochraceous; and colour at margin pale cream; with remains of universal veil no.

    Lamellae: attachment emarginate; maximum depth up to 6 mm; number of complete lamellae 38; tears absent; white fimbriate edge weak.

    Stipe: 28–50 x 5–8 {median} x 5–6 {basal} mm; stipe Q 5.7–7.8; base cylindrical, tapering; floccosity fibrillose, pruinose at apex; rooting no; mycelial chords no.

    Context: texture firm; stipe interior hollow; stipe flesh discolouring from base weak; slenderness measure 9.5; smell sacchariolentia, sweet; taste not recorded.

    Spore deposit colour: brownish olive.

    Exsiccata: normal.

  • arrow_drop_downarrow_drop_upMicroscopic description

    Spores: shape amygdaloid, limoniform; colour through microscope brown; guttulate no; papillate yes; Spore Code: O3; O4; P2; P3; D4.

    Basidia: 34.8–40.0 x 7.5–8.9 μm; ave. Q = 4.3; basidia spore nature not recorded.

    Cheilocystidia: main shape balloon-shaped, gently clavate; special features branching, clamped septa, irregular, geniculate, septa, short; Cheilocystidia Ratios: A/M = 1.46; A/B = 2.14; B/M = 0.77.

    Pleurocystidia: no.

    Ixocutis: epicutis thickness (measured from exsiccata) 70 μm; ixocutis maximum hyphae width 6 μm; ixocutis hyphae encrustation yes; shape of trama elements beneath subcutis ellipsoid, thickly sausage-shaped up to 25 μm wide.

    Caulocystidia: caulocystidia maximum length 120 μm.

    Spore(min) 5%-95% (max)meanmedianS.D.
    Length (µm)(8.8) 9.7–12.5 (14.1)10.910.90.990
    Width (µm)(5.8) 6.0–7.6 (8.0)6.96.80.440
    Q(1.35) 1.42–1.81 (1.87)1.601.590.11

    Cheilocystidium (µm)(min) 5%-95% (max)meanmedianS.D.
    Length(19) 24–49 (50)34337.5
    Apex Width(3.1) 4.5–9.3 (11.0)6.87.01.450
    Median Width(2.8) 3.4–8.1 (8.2)5.24.71.56
    Basal Width(0.6) 2.9–5.63.93.71.18
  • arrow_drop_downarrow_drop_upTemperature calculation
    Max tempMin tempPrecipitation
    Annualised average (2002)15.05 °C7.57 °C66.66 mm
    Collection month (11/2002)11.97 °C6.43 °C130.29 mm
    Max month (2002)22.31 °C13.01 °C130.29 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 81.0 38.29 1st/28
Average length 10.9 11.64 22nd–24th/29
Average width 6.9 6.83 7th–18th/29
Standard deviation of length 0.99 0.80 3rd/28
Standard deviation of width 0.44 0.40 7th–9th/28
Median length 10.9 11.65 21st–23rd/28
Median width 6.8 6.85 14th–20th/28
Minimum length 8.8 9.96 26th/28
Minimum width 5.8 5.87 16th–20th/28
Low length 9.7 10.44 22nd–25th/28
Low width 6.0 6.21 22nd–24th/28
High length 12.5 12.76 19th/28
High width 7.6 7.37 5th–7th/28
Max length 14.1 13.26 3rd–5th/28
Max width 8.0 7.54 2nd–3rd/28
Spore featureValueCommonalities
Ornamentation O3; O4 84% of collections; 43% of collections
Perispore loosening P2; P3 78% of collections; 53% of collections
Dextrinoidity D4 59% of collections