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Taxonomy

Collection 13621 (herbarium acc. no. BR 5020184119676) is the holotype of Hebeloma celatum.

Description

  • arrow_drop_downarrow_drop_upCollecting details

    Collection 13621 was collected by H.J. Beker, L. Davies on 19th September 2010 in Teningen Unterwald NN, MTB7812/4, Baden-Württemberg, GERMANY (48.124°N, 7.7797°E, altitude approximately 190 m above sea level - Google maps). The ectomycorrhizal families Betulaceae (genus Carpinus) and Fagaceae (genus Quercus) were present.

    The surrounding habitat was described as deciduous woodland lakeside pathside with a substrate of calcareous 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. 1.4: Forest – Temperate.

    According to the GPS data the collection was in the Western European broadleaf 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: 45–63 mm diameter; shape umbonate strongly; margin characters smooth; viscosity tacky when moist; spotting yes; hygrophanous no; colour variation unicolor; with colour at centre dark pinkish buff; and colour at margin pinkish buff; with remains of universal veil no.

    Lamellae: attachment emarginate; maximum depth up to 6 mm; number of complete lamellae 63; tears visible with naked eye; white fimbriate edge present.

    Stipe: 40–65 x 6–12 {median} x 8–17 {basal} mm; stipe Q 5.4–6.2; base clavate; floccosity floccose; rooting no; mycelial chords no.

    Context: texture firm; stipe interior hollow, superior wick; stipe flesh discolouring from base no; slenderness measure 5.3; smell raphanoid; taste not recorded.

    Spore deposit colour: brownish olive.

    Exsiccata: fragile, normal.

  • arrow_drop_downarrow_drop_upMicroscopic description

    Spores: shape amygdaloid, limoniform; colour through microscope yellow brown; guttulate weak; papillate very strongly; Spore Code: O3; P1; P2; D3.

    Basidia: 30.5–34.1 x 7.9–9.4 μm; ave. Q = 3.7; basidia spore nature not recorded.

    Cheilocystidia: main shape gently clavate, clavate-lageniform or clavate-ventricose, lageniform, ventricose; special features bifurcate, branching, clamped septa; Cheilocystidia Ratios: A/M = 1.43; A/B = 0.92; B/M = 1.58.

    Pleurocystidia: no.

    Ixocutis: epicutis thickness (measured from exsiccata) 75 μm; ixocutis maximum hyphae width 5 μm; ixocutis hyphae encrustation yes; shape of trama elements beneath subcutis ellipsoid, thickly sausage-shaped up to 20 μm wide.

    Caulocystidia: caulocystidia maximum length 150 μm.

    Spore(min) 5%-95% (max)meanmedianS.D.
    Length (µm)(11.8) 12.1–14.3 (15.4)13.113.00.690
    Width (µm)(6.2) 6.5–7.2 (7.5)6.96.90.230
    Q(1.74) 1.80–2.05 (2.11)1.901.900.08

    Cheilocystidium (µm)(min) 5%-95% (max)meanmedianS.D.
    Length(37) 39–59 (63)50496.7
    Apex Width(3.7) 4.9–7.6 (8.8)6.16.10.910
    Median Width(3.2) 3.7–5.4 (5.7)4.64.70.61
    Basal Width(5.7) 5.8–8.5 (8.7)7.27.30.86
  • arrow_drop_downarrow_drop_upTemperature calculation
    Max tempMin tempPrecipitation
    Annualised average (2010)14.41 °C6.02 °C78.44 mm
    Collection month (9/2010)19.29 °C9.12 °C60.98 mm
    Max month (2010)27.70 °C15.89 °C149.15 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 85.0 48.74 6th/50
Average length 13.1 11.71 1st/51
Average width 6.9 6.75 15th–22nd/51
Standard deviation of length 0.69 0.71 15th/32
Standard deviation of width 0.23 0.36 28th–30th/32
Median length 13.0 11.77 1st–2nd/32
Median width 6.9 6.72 9th–12th/32
Minimum length 11.8 10.39 3rd/33
Minimum width 6.2 6.05 10th–11th/33
Low length 12.1 10.76 1st/33
Low width 6.5 6.24 7th–10th/33
High length 14.3 12.78 3rd/33
High width 7.2 7.23 14th–20th/33
Max length 15.4 13.23 2nd/33
Max width 7.5 7.40 11th/33
Spore featureValueCommonalities
Ornamentation O3 98% of collections
Perispore loosening P1; P2 92% of collections; 62% of collections
Dextrinoidity D3 98% of collections