Collection 16799 (held at herbarium TLXM) is Hebeloma ambustiterranum.


  • arrow_drop_downarrow_drop_upCollecting details

    Collection 16799 was collected by not recorded on 8th July 2017 in Malinche National Park, Tlaxcala, MEXICO (19.2742°N, 97.9833°W, altitude approximately 2845 m above sea level - Google maps). The ectomycorrhizal family Pinaceae (genus Pinus) was present.

    The surrounding habitat was described as coniferous, montane, subtropical 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. 1.9: Forest – Subtropical/tropical moist montane.

    According to the GPS data the collection was in the Trans-Mexican Volcanic Belt pine-oak 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: Tropical & Subtropical Coniferous Forests) and Koppen climate code Cwb (Temperate, dry winter, warm summer).

  • arrow_drop_downarrow_drop_upMacroscopic description

    Cortina present: yes.

    Pileus: 23–45 mm diameter; shape umbonate broadly; margin characters involute, smooth; viscosity tacky when moist; spotting not recorded; hygrophanous not recorded; colour variation unicolor; with colour at centre cream; and colour at margin cream; with remains of universal veil yes.

    Lamellae: attachment emarginate; maximum depth up to 4 mm; number of complete lamellae 68; tears absent; white fimbriate edge present.

    Stipe: 37–40 x 4–9 {median} x 4–9 {basal} mm; stipe Q 4.4–8.2; base cylindrical; floccosity fibrillose, pruinose at apex; rooting no; mycelial chords no.

    Context: texture firm; stipe interior hollow; stipe flesh discolouring from base yes; slenderness measure 8.4; smell raphanoid; taste not recorded.

    Spore deposit colour: clay-buff.

    Exsiccata: analysis not yet complete.

  • arrow_drop_downarrow_drop_upMicroscopic description

    Spores: shape ellipsoid, ovoid; colour through microscope brown pale, very pale, yellow pale; guttulate yes; papillate no; Spore Code: O1; P0; D1.

    Basidia: 29.0–33.7 x 6.5–8.5 μm; ave. Q = 4.1; basidia spore nature not recorded.

    Cheilocystidia: main shape lageniform, ventricose; special features septa; Cheilocystidia Ratios: A/M = 0.98; A/B = 0.60; B/M = 1.71.

    Pleurocystidia: no.

    Ixocutis: epicutis thickness (measured from exsiccata) 100 μm; ixocutis maximum hyphae width 6 μm; ixocutis hyphae encrustation yes; shape of trama elements beneath subcutis cylindrical up to 12 μm wide.

    Caulocystidia: caulocystidia maximum length 140 μm.

    Spore(min) 5%-95% (max)meanmedianS.D.
    Length (µm)(8.5) 8.9–10.7 (10.9)
    Width (µm)(5.5) 5.7–6.7 (7.3)
    Q(1.36) 1.46–1.72 (1.85)1.581.580.08

    Cheilocystidium (µm)(min) 5%-95% (max)meanmedianS.D.
    Length(35) 40–5548495.4
    Apex Width3.4–6.1 (6.3)
    Median Width(3.8) 4.2–5.7 (6.1)
    Basal Width6.5–9.8 (11.5)
  • arrow_drop_downarrow_drop_upTemperature calculation
    Max tempMin tempPrecipitation
    Annualised average (2017)20.58 °C4.04 °C92.42 mm
    Collection month (7/2017)20.26 °C5.82 °C144.15 mm
    Max month (2017)22.87 °C6.49 °C245.18 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 146.0 131.45 1st–13th/20
Average length 9.8 9.08 3rd–4th/20
Average width 6.2 6.09 6th–8th/20
Standard deviation of length 0.56 0.60 14th/20
Standard deviation of width 0.32 0.35 12th/20
Median length 9.8 9.06 4th/20
Median width 6.2 6.06 5th–8th/20
Minimum length 8.5 7.52 2nd/20
Minimum width 5.5 5.24 5th/20
Low length 8.9 8.13 3rd/20
Low width 5.7 5.59 4th–9th/20
High length 10.7 10.07 5th/20
High width 6.7 6.71 11th/20
Max length 10.9 10.67 6th–13th/20
Max width 7.3 7.19 4th–9th/20
Spore featureValueCommonalities
Ornamentation O1 100% of collections
Perispore loosening P0 100% of collections
Dextrinoidity D1 100% of collections