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Taxonomy

Collection 1000055 (herbarium acc. no. G K13929) is the lectotype of Hebeloma marginatulum.

Description

  • arrow_drop_downarrow_drop_upCollecting details

    Collection 1000055 was collected by J. Favre on 24th August 1947 in Costainas, Haut Val S-charl, Graubunden, SWITZERLAND (approx. 46.61°N, 9.57°E, altitude approximately 2400 m above sea level - Google maps). The ectomycorrhizal family Salicaceae (genus Salix) was present.

    The surrounding habitat was described as alpine meadow, 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. 5.11: Wetlands (inland) – Alpine wetlands (inc. temporary waters from snowmelt).

    According to the GPS data the collection was in the Alps conifer and mixed 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 Dfb (Cold, no dry season, warm summer).

  • arrow_drop_downarrow_drop_upMacroscopic description

    Cortina present: yes.

    Pileus: 12–22 mm diameter; shape umbonate; margin characters not recorded; viscosity tacky when moist; spotting not recorded; hygrophanous no; colour variation unicolor; with colour at centre not recorded; and colour at margin not recorded; with remains of universal veil yes.

    Lamellae: attachment emarginate; maximum depth up to 7 mm; number of complete lamellae 32; tears absent; white fimbriate edge present.

    Stipe: 16–32 x 3–5 {median} x 5–8 {basal} mm; stipe Q 4.6–5.8; base clavate, cylindrical; floccosity fibrillose, floccose at apex; rooting no; mycelial chords no.

    Context: texture firm; stipe interior hollow, stuffed; stipe flesh discolouring from base yes; slenderness measure 7.3; smell raphanoid weakly; taste bitter weakly.

    Spore deposit colour: analysis not yet complete.

    Exsiccata: analysis not yet complete.

  • arrow_drop_downarrow_drop_upMicroscopic description

    Spores: shape amygdaloid, ellipsoid; colour through microscope yellow; guttulate no; papillate no; Spore Code: O1; P0; D0; D1.

    Basidia: 27.9–36.7 x 6.3–7.9 μm; ave. Q = 4.5; basidia spore nature not recorded.

    Cheilocystidia: main shape cylindrical, lageniform, ventricose; special features long, septa; Cheilocystidia Ratios: A/M = 1.14; A/B = 0.81; B/M = 1.55.

    Pleurocystidia: no.

    Ixocutis: epicutis thickness (measured from exsiccata) 80 μm; ixocutis maximum hyphae width 5 μm; ixocutis hyphae encrustation no; shape of trama elements beneath subcutis ellipsoid, pyriform, thickly sausage-shaped up to 13 μm wide.

    Caulocystidia: analysis not yet complete.

    Spore(min) 5%-95% (max)meanmedianS.D.
    Length (µm)(9.2) 9.8–13.5 (15.4)11.210.91.110
    Width (µm)(5.6) 5.8–7.5 (8.1)6.56.40.520
    Q(1.42) 1.47–2.01 (2.21)1.731.720.17

    Cheilocystidium (µm)(min) 5%-95% (max)meanmedianS.D.
    Length(35) 42–82 (86)575513.83
    Apex Width(4.4) 4.6–6.7 (7.5)5.65.50.650
    Median Width(3.6) 3.8–5.7 (5.8)4.95.00.64
    Basal Width(2.9) 5.0–10.5 (11.7)7.67.91.97
  • arrow_drop_downarrow_drop_upTemperature calculation
    Max tempMin tempPrecipitation
    Annualised average (1947)--- °C--- °C--- mm
    Collection month (8/1947)--- °C--- °C--- mm
    Max month (1947)--- °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 81.0 57.16 6th/43
Average length 11.2 10.97 15th–17th/44
Average width 6.5 6.38 14th–16th/44
Standard deviation of length 1.11 0.69 2nd/42
Standard deviation of width 0.52 0.36 2nd/42
Median length 10.9 10.98 19th–22nd/42
Median width 6.4 6.38 16th–22nd/42
Minimum length 9.2 9.50 24th–29th/43
Minimum width 5.6 5.67 20th–25th/43
Low length 9.8 9.98 22nd–24th/43
Low width 5.8 5.88 21st–25th/43
High length 13.5 12.10 4th/43
High width 7.5 6.97 5th–8th/43
Max length 15.4 12.74 1st/43
Max width 8.1 7.30 4th/43
Spore featureValueCommonalities
Ornamentation O1 100% of collections
Perispore loosening P0 100% of collections
Dextrinoidity D0; D1 73% of collections; 37% of collections